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 MIC5320
Dual, High Performance 150mA Cap ULDOTM
General Description
The MIC5320 is a tiny Dual Ultra Low-Dropout (ULDOTM) linear regulator ideally suited for portable electronics. It is ideal for general purpose/ digital applications which require high power supply ripple rejection (PSRR) >65dB, eliminating the need for a bypass capacitor and providing two enable pins for maximum flexibility. The MIC5320 integrates two highperformance; 150mA ULDOs into a tiny 6-pin 1.6mm x 1.6mm leadless MLF(R) package, which provides exceptional thermal package characteristics. The MIC5320 is a Cap design which enables operation with very small ceramic output capacitors for stability, thereby reducing required board space and component cost. The combination of extremely low-drop-out voltage, high power supply rejection and exceptional thermal package characteristics makes it ideal for powering cellular phone camera modules, imaging sensors for digital still cameras, PDAs, MP3 players and WebCam applications. The MIC5320 ULDOTM is available in fixed-output voltages in the tiny 6-pin 1.6mm x 1.6mm leadless MLF(R) package which is only 2.56mm2 in area, less than 30% the area of the SOT-23, TSOP and MLF(R) 3x3 packages. It's also available in the thin SOT-23-6 lead package. Additional voltage options are available. For more information, contact Micrel marketing department. Data sheets and supporting documentation can be found on Micrel's web site at www.micrel.com.
Features
* * * * * * * * * * * * 2.3V to 5.5V input voltage range Ultra-low dropout voltage ULDOTM 35mV @ 150mA Tiny 6-pin 1.6mm x 1.6mm MLF(R) leadless package Low cost TSOT-23-6 package Independent enable pins PSRR - >65dB on each LDO 150mA output current per LDO Cap stable with 1F ceramic capacitor Low quiescent current - 85A per output Fast turn-on time - 30s Thermal shutdown protection Current limit protection
Applications
* * * * * * Mobile phones PDAs GPS receivers Portable electronics Portable media players Digital still and video cameras
Typical Application
MIC5320-x.xYML VIN EN 1 1F EN 2 GND 1F 1F RF Transceiver VOUT 1 VOUT 2 Rx/Synth Tx
RF Power Supply Circuit
ULDO is a trademark of Micrel, Inc. MLF and MicroLeadFrame are registered trademarks of Amkor Technologies, Inc. Micrel Inc. * 2180 Fortune Drive * San Jose, CA 95131 * USA * tel +1 (408) 944-0800 * fax + 1 (408) 474-1000 * http://www.micrel.com
July 2006
M9999-073106
Micrel, Inc.
MIC5320
Ordering Information
Part number MIC5320-1.8/1.5YML MIC5320-1.8/1.6YML MIC5320-2.5/1.8YML MIC5320-2.5/2.5YML MIC5320-2.6/1.85YML MIC5320-2.6/1.8YML MIC5320-2.7/2.7YML MIC5320-2.8/1.5YML MIC5320-2.8/1.8YML MIC5320-2.8/2.6YML MIC5320-2.8/2.8YML MIC5320-2.8/2.85YML MIC5320-2.85/1.85YML MIC5320-2.85/2.6YML MIC5320-2.85/2.85YML MIC5320-2.9/1.5YML MIC5320-2.9/1.8YML MIC5320-2.9/2.9YML MIC5320-3.0/1.8YML MIC5320-3.0/2.5YML MIC5320-3.0/2.6YML MIC5320-3.0/2.8YML MIC5320-3.0/2.85YML MIC5320-3.0/3.0YML MIC5320-3.3/1.5YML MIC5320-3.3/1.8YML MIC5320-3.3/2.5YML MIC5320-3.3/2.6YML MIC5320-3.3/2.7YML MIC5320-3.3/2.8YML MIC5320-3.3/2.85YML MIC5320-3.3/2.9YML MIC5320-3.3/3.0YML MIC5320-3.3/3.2YML MIC5320-3.3/3.3YML MIC5320-1.8/1.5YD6 MIC5320-1.8/1.6YD6 MIC5320-2.5/1.8YD6 MIC5320-2.5/2.5YD6 MIC5320-2.6/1.85YD6 MIC5320-2.6/1.8YD6 MIC5320-2.7/2.7YD6 MIC5320-2.8/1.5YD6 MIC5320-2.8/1.8YD6 MIC5320-2.8/2.6YD6 MIC5320-2.8/2.8YD6 Manufacturing Part Number MIC5320-GFYML MIC5320-GWYML MIC5320-JGYML MIC5320-JJYML MIC5320-KDYML MIC5320-KGYML MIC5320-LLYML MIC5320-MFYML MIC5320-MGYML MIC5320-MKYML MIC5320-MMYML MIC5320-MNYML MIC5320-NDYML MIC5320-NKYML MIC5320-NNYML MIC5320-OFYML MIC5320-OGYML MIC5320-OOYML MIC5320-PGYML MIC5320-PJYML MIC5320-PKYML MIC5320-PMYML MIC5320-PNYML MIC5320-PPYML MIC5320-SFYML MIC5320-SGYML MIC5320-SJYML MIC5320-SKYML MIC5320-SLYML MIC5320-SMYML MIC5320-SNYML MIC5320-SOYML MIC5320-SPYML MIC5320-SRYML MIC5320-SSYML MIC5320-GFYD6 MIC5320-GWYD6 MIC5320-JGYD6 MIC5320-JJYD6 MIC5320-KDYD6 MIC5320-KGYD6 MIC5320-LLYD6 MIC5320-MFYD6 MIC5320-MGYD6 MIC5320-MKYD6 MIC5320-MMYD6 Voltage 1.8V/1.5V 1.8V/1.6V 2.5V/1.8V 2.5V/2.5V 2.6V/1.85 2.6V/1.8V 2.7V/2.7V 2.8V/1.5V 2.8V/1.8V 2.8V/2.6V 2.8V/2.8V 2.8V/2.85V 2.85V/1.85V 2.85V/2.6V 2.85V/2.85V 2.9V/1.5V 2.9V/1.8V 2.9V/2.9V 3.0V/1.8V 3.0V/2.5V 3.0V/2.6V 3.0V/2.8V 3.0V/2.85V 3.0V/3.0V 3.3V/1.5V 3.3V/1.8V 3.3V/2.5V 3.3V/2.6V 3.3V/2.7V 3.3V/2.8V 3.3V/2.85V 3.3V/2.9V 3.3V/3.0V 3.3V/3.2V 3.3V/3.3V 1.8V/1.5V 1.8V/1.6V 2.5V/1.8V 2.5V/2.5V 2.6V/1.85 2.6V/1.8V 2.7V/2.7V 2.8V/1.5V 2.8V/1.8V 2.8V/2.6V 2.8V/2.8V Junction Temperature Range -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C Package 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin 1.6x1.6 MLF(R) 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 M9999-073106
July 2006
2
Micrel, Inc.
MIC5320-2.8/2.85YD6 MIC5320-2.85/1.85YD6 MIC5320-2.85/2.6YD6 MIC5320-2.85/2.85YD6 MIC5320-2.9/1.5YD6 MIC5320-2.9/1.8YD6 MIC5320-2.9/2.9YD6 MIC5320-3.0/1.8YD6 MIC5320-3.0/2.5YD6 MIC5320-3.0/2.6YD6 MIC5320-3.0/2.8YD6 MIC5320-3.0/2.85YD6 MIC5320-3.0/3.0YD6 MIC5320-3.3/1.5YD6 MIC5320-3.3/1.8YD6 MIC5320-3.3/2.5YD6 MIC5320-3.3/2.6YD6 MIC5320-3.3/2.7YD6 MIC5320-3.3/2.8YD6 MIC5320-3.3/2.85YD6 MIC5320-3.3/2.9YD6 MIC5320-3.3/3.0YD6 MIC5320-3.3/3.2YD6 MIC5320-3.3/3.3YD6
Note: 1. Other Voltages available. Contact Micrel for detail.
MIC5320
MIC5320-MNYD6 MIC5320-NDYD6 MIC5320-NKYD6 MIC5320-NNYD6 MIC5320-OFYD6 MIC5320-OGYD6 MIC5320-OOYD6 MIC5320-PGYD6 MIC5320-PJYD6 MIC5320-PKYD6 MIC5320-PMYD6 MIC5320-PNYD6 MIC5320-PPYD6 MIC5320-SFYD6 MIC5320-SGYD6 MIC5320-SJYD6 MIC5320-SKYD6 MIC5320-SLYD6 MIC5320-SMYD6 MIC5320-SNYD6 MIC5320-SOYD6 MIC5320-SPYD6 MIC5320-SRYD6 MIC5320-SSYD6 2.8V/2.85V 2.85V/1.85V 2.85V/2.6V 2.85V/2.85V 2.9V/1.5V 2.9V/1.8V 2.9V/2.9V 3.0V/1.8V 3.0V/2.5V 3.0V/2.6V 3.0V/2.8V 3.0V/2.85V 3.0V/3.0V 3.3V/1.5V 3.3V/1.8V 3.3V/2.5V 3.3V/2.6V 3.3V/2.7V 3.3V/2.8V 3.3V/2.85V 3.3V/2.9V 3.3V/3.0V 3.3V/3.2V 3.3V/3.3V -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23 6-Pin TSOT-23
July 2006
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M9999-073106
Micrel, Inc.
MIC5320
Pin Configuration
VIN 3 VIN 1 GND 2 EN2 3 6 5 4 VOUT1 VOUT2 EN1 4 5 6 VOUT1 VOUT2 EN1 GND 2 EN2 1
6-Pin 1.6mm x 1.6mm MLF (ML) Top View
TSOT-23-6 (D6) Top View
Pin Description
Pin Number MLF-6
1 2 3 4 5 6
Pin Number TSOT-23-6
3 2 1 6 5 4
Pin Name
VIN GND EN2 EN1 VOUT2 VOUT1
Pin Function
Supply Input. Ground Enable Input (regulator 2). Active High Input. Logic High = On; Logic Low = Off; Do not leave floating. Enable Input (regulator 1). Active High Input. Logic High = On; Logic Low = Off; Do not leave floating. Regulator Output - LDO2 Regulator Output - LDO1
July 2006
4
M9999-073106
Micrel, Inc.
MIC5320
Absolute Maximum Ratings(1)
Supply Voltage (VIN) .....................................0V to +6V Enable Input Voltage (VEN)...........................0V to +6V Power Dissipation..................... Internally Limited(3) Lead Temperature (soldering, 3sec) ..................260C Storage Temperature (TS) ................ -65C to +150C ESD Rating(4) .........................................................2kV
Operating Ratings(2)
Supply Voltage (VIN).............................. +2.3V to +5.5V Enable Input Voltage (VEN).............................. 0V to VIN Junction Temperature (TJ) ................. -40C to +125C Junction Thermal Resistance MLF-6 (JA).............................................. 100C/W TSOT-6 (JA) ........................................... 235C/W
Electrical Characteristics(5)
VIN = EN1 = EN2 = VOUT + 1.0V; higher of the two regulator outputs, IOUTLDO1 = IOUTLDO2 = 100A; COUT1 = COUT2 = 1F; TJ = 25C, bold values indicate -40C TJ +125C, unless noted.
Parameter
Output Voltage Accuracy Line Regulation Load Regulation Dropout Voltage
(6)
Conditions
Variation from nominal VOUT Variation from nominal VOUT; -40C to +125C VIN = VOUT + 1V to 5.5V; IOUT = 100A IOUT = 100A to 150mA IOUT = 100A IOUT = 50mA IOUT = 100mA IOUT = 150mA
Min
-2.0
Typ
Max
+2.0
Units
% % %/V %/V % mV mV mV mV A A A A dB dB
-3.0
0.02 0.5 0.1 12 25 35 85 85 150 0.01 65 45 300 550 90
+3.0
0.3 0.6
2 50 75 100
120 120
Ground Current
EN1 = High; EN2 = Low; IOUT = 100A to 150mA EN1 = Low; EN2 = High; IOUT = 100A to 150mA EN1 = EN2 = High; IOUT1 = 150mA, IOUT2 = 150mA
190
2
Ground Current in Shutdown Ripple Rejection Current Limit Output Voltage Noise
EN1 = EN2 = 0V f = 1kHz; COUT = 1.0F f=20kHz; COUT = 1.0F VOUT = 0V COUT = 1.0F; 10Hz to 100KHz Logic Low Logic High
950
mA VRMS
Enable Inputs (EN1 / EN2)
Enable Input Voltage Enable Input Current
0.2 1.1
0.01 0.01 30 1 1
V V A A s
VIL 0.2V VIH 1.0V
Turn-on Time (See Timing Diagram)
Turn-on Time (LDO1 and 2) Notes: COUT = 1.0F
100
1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = TJ(max) - TA) / JA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. 4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. 5. Specification for packaged product only. 6. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal VOUT. For outputs below 2.3V, the dropout voltage is the input-to-output differential with the minimum input voltage 2.3V.
July 2006
5
M9999-073106
Micrel, Inc.
MIC5320
Functional Diagram
VIN
LDO1
VOUT 1
LDO2 EN 1 EN 2 Enable
VOUT 2
Reference
GND
MIC5320 Block Diagram
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Micrel, Inc.
MIC5320
Typical Characteristics
-80 -70 -60 -50 -40 -30 -20 50mA VIN = VOUT +1V -10 VOUT = 2.8V COUT = 1F 0 0.1 1 10 100 1,000 FREQUENCY (kHz) 150mA
Power Supply Rejection Ratio
40 35 30 25 20 15 10 5 0 0
Dropout Voltage vs. Output Current
3.00 2.95 2.90 2.85 2.80 2.75
Output Voltage vs. Temperature
VIN = VOUT + 1V VOUT = 2.8V COUT = 1F EN1 = VIN 25 50 75 100 125 150 OUTPUT CURRENT (mA)
2.70 2.65 2.60 2.55 2.50
VIN = VOUT + 1V VOUT = 2.8V COUT = 1F EN1 = VIN 20 40 60 80 TEMPERATURE (C)
100 95 90 85 80 75 70
Ground Current vs. Temperature
100 95 90
Ground Current vs. Temperature
3.0 2.5 2.0
Output Voltage vs. Input Voltage
2.8V
100A VIN = VOUT + 1V VOUT = 2.8V COUT = 1F EN1 = VIN EN2 = GND 20 40 60 80 TEMPERATURE (C)
85 80 75 70
150mA VIN = VOUT + 1V VOUT = 2.8V COUT = 1F EN1 = VIN EN2 = GND 20 40 60 80 TEMPERATURE (C)
1.5 1.0 0.5 0.0 0
1.5V
IOUT = 100A COUT = 1F 1 2 3 4 5 6 INPUT VOLTAGE (V)
50 VIN = VOUT + 1V 45 VOUT = 2.8V COUT = 1F 40 35 30 25 20 15 10 5 0
Dropout Voltage vs. Temperature
150mA
2.90
Output Voltage vs. Output Current
1.60
Output Voltage vs. Output Current
2.85 100mA 2.80
1.55
1.50 VIN = VOUT + 1V 1.45 VOUT = 1.5V COUT1 = COUT2 = 1F EN1 = GND EN2 = VIN 1.40 0 25 50 75 100 125 150 OUTPUT CURRENT (mA)
50mA 10mA 100A
20 40 60 80 TEMPERATURE (C)
VIN = VOUT + 1V 2.75 VOUT = 2.8V COUT1 = COUT2 = 1F EN1 = VIN EN2 = GND 2.70 0 25 50 75 100 125 150 OUTPUT CURRENT (mA)
90
Ground Current vs. Output Current
162 158 154
Ground Current vs. Output Current
610 600 590 580 570 560
Current Limit vs. Input Voltage
85
80 150 75 VIN = VOUT + 1V VOUT = 2.85V EN1 = VIN COUT1 = 1F 25 50 75 100 125 150 OUTPUT CURRENT (mA) 146 142 0 VIN = VOUT + 1V VOUT = 2.85V EN1 = EN2 = VIN COUT1 = COUT2 = 1F 25 50 75 100 125 150 OUTPUT CURRENT (mA)
550 540 530 520 510 3
70 0
EN1 = VIN COUT = 1F 3.5 4 4.5 5 INPUT VOLTAGE (V) 5.5
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Micrel, Inc.
MIC5320
Typical Characteristics (continued)
10
Output Noise Spectral Density
0.1 VIN = 4V VOUT = 2.8V COUT = 1F ILOAD = 50mA 0.1 1 10 100 1,000 FREQUENCY (kHz)
0.01
0.001 0.01
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MIC5320
Functional Characteristics
Enable Turn-On
Load Transient
EN1 (1V/div)
Output Voltage (20mV/div)
150mA
VIN = VOUT + 1V VOUT = 2.8V COUT = 1F
VIN = VOUT + 1V VOUT1 (1V/div) VOUT = 2.8V COUT = 1F
Output Current (50mA/div)
10mA
Time (10s/div)
Time (40s/div)
Line Transient
5.5V 4V Input Voltage (2V/div) VIN = VOUT + 1V VOUT = 2.8V COUT = 1F IOUT = 10mA
Output Voltage (50mV/div)
Time (40s/div)
July 2006
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Micrel, Inc.
MIC5320
Applications Information
Enable/Shutdown The MIC5320 comes with dual active-high enable pins that allow each regulator to be disabled independently. Forcing the enable pin low disables the regulator and sends it into a "zero" off-mode-current state. In this state, current consumed by the regulator goes nearly to zero. Forcing the enable pin high enables the output voltage. The active-high enable pin uses CMOS technology and the enable pin cannot be left floating; a floating enable pin may cause an indeterminate state on the output. Input Capacitor The MIC5320 is a high-performance, high bandwidth device. Therefore, it requires a well-bypassed input supply for optimal performance. A 1F capacitor is required from the input to ground to provide stability. Low-ESR ceramic capacitors provide optimal performance at a minimum of space. Additional highfrequency capacitors, such as small-valued NPO dielectric-type capacitors, help filter out highfrequency noise and are good practice in any RFbased circuit. Output Capacitor The MIC5320 requires an output capacitor of 1F or greater to maintain stability. The design is optimized for use with low-ESR ceramic chip capacitors. High ESR capacitors may cause high frequency oscillation. The output capacitor can be increased, but performance has been optimized for a 1F ceramic output capacitor and does not improve significantly with larger capacitance.
X7R/X5R dielectric-type ceramic capacitors are recommended because of their temperature performance. X7R-type capacitors change capacitance by 15% over their operating temperature range and are the most stable type of ceramic capacitors. Z5U and Y5V dielectric capacitors change value by as much as 50% and 60%, respectively, over their operating temperature ranges. To use a ceramic chip capacitor with Y5V dielectric, the value must be much higher than an X7R ceramic capacitor to ensure the same minimum capacitance over the equivalent operating temperature range.
Thermal Considerations The MIC5320 is designed to provide 150mA of continuous current for both outputs in a very small package. Maximum ambient operating temperature can be calculated based on the output current and the voltage drop across the part. Given that the input voltage is 3.3V, the output voltage is 2.8V for VOUT1, 1.5V for VOUT2 and the output current = 150mA. The actual power dissipation of the regulator circuit can be determined using the equation:
PD = (VIN - VOUT1) IOUT1 + (VIN - VOUT2) IOUT2+ VIN IGND Because this device is CMOS and the ground current is typically <150A over the load range, the power dissipation contributed by the ground current is < 1% and can be ignored for this calculation. PD = (3.3V - 2.8V) x 150mA + (3.3V -1.5) x 150mA PD = 0.345W To determine the maximum ambient operating temperature of the package, use the junction-toambient thermal resistance of the device and the following basic equation:
PD(MAX) =

TJ(MAX) - TA
JA
TJ(max) = 125C, the maximum junction temperature of the die JA thermal resistance = 100C/W. The table below shows junction-to-ambient thermal resistance for the MIC5320 in different packages.
JA Recommended Minimum Footprint
(R)
Package
JC
6-Pin 1.6x1.6 MLF
100C/W
2C/W
Thermal Resistance
Substituting PD for PD(max) and solving for the ambient operating temperature will give the maximum operating conditions for the regulator circuit. The junction-to-ambient thermal resistance for the minimum footprint is 100C/W. The maximum power dissipation must not be exceeded for proper operation.
No-Load Stability Unlike many other voltage regulators, the MIC5320 will remain stable and in regulation with no load. This is especially important in CMOS RAM keep-alive applications.
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MIC5320
For example, when operating the MIC5320-MFYML at an input voltage of 3.3V and 150mA loads at each output with a minimum footprint layout, the maximum ambient operating temperature TA can be determined as follows: 0.345W = (125C - TA)/(100C/W) TA=90.5C
Therefore, a 2.8V/1.5V application with 150mA at each output current can accept an ambient operating temperature of 90.5C in a 1.6mm x 1.6mm MLF(R) package. For a full discussion of heat sinking and thermal effects on voltage regulators, refer to the "Regulator Thermals" section of Micrel's Designing with Low-Dropout Voltage Regulators handbook. This information can be found on Micrel's website at: http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
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M9999-073106
Micrel, Inc.
MIC5320
Package Information
6-Pin 1.6mm x 1.6mm MLF (ML)
6-Pin TSOT-23 (D6)
July 2006
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M9999-073106
Micrel, Inc.
MIC5320
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2005 Micrel, Inc.
July 2006
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M9999-073106


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