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300mA Low Power Low Noise LDO CMOS Voltage Regulator
Description
The SE5509 series of fixed output low dropout linear regulators are designed for portable battery powered applications, which require low power consumption, low noise environment, and low dropout voltage. Each device contains a bandgap voltage reference, an error amplifier, a PMOS power transistor, and resistors for setting output voltage, and current limit and temperature limit protection circuits. The SE5509 has been designed to be used with low cost capacitors and requires a minimum output capacitor of 1.0F. The output voltages range from 1.3V to 4.4V in 100mV increments. Standard voltage versions are 1.5, 1.8, 2.5, 2.8, 3.0, and 3.3V.
SE5509
Features
Typical 200mV Dropout Voltage at 150mA. Fast Enable Turn-On Time of 20s (Typ.) Excellent Line and Load Regulation. High Accuracy Output Voltage of 2%. Ultra-Low Ground Current at 20A (Typ.) Disable Current Less than 0.1A (Typ.) Over Current and thermal Protection. No Reverse Current. Standard SOT-23-5L and TSOP-5 Package.
Application
USB removable devices MPEG4 devices Wireless LAN's Hand-Held Instrumentation. Portable DVD players Digital camera
Pin Configuration
Ordering Information
SE5509 _
__
Pin (1=>5): G: VIN/GND/EN/BYPASS/VOUT Package: L: SOT-23-5L / TSOP-5
Block Diagram
Output Voltage: A: VOUT = 3.3V B: VOUT = 2.8V C: VOUT = 2.5V D: VOUT = 1.8V E: VOUT = 1.5V F: VOUT = 3.0V
Revision 12/5/2008 Preliminary and all contents are subject to change without prior notice (c) Seaward Electronics Inc., 2006. * www.seawardinc.com.cn * Page 1
300mA Low Power Low Noise LDO CMOS Voltage Regulator
Ordering/Marking Information
Package
SOT-23-5L / TSOP-5 (Top View) VIN GND ENABLE 1 2 3 4 BYPASS 5 VOUT
SE5509
Ordering Information 3.3V 2.8V 2.5V 1.8V 1.5V 3.0V SE5509ALG-LF SE5509BLG-LF SE5509CLG-LF SE5509DLG-LF SE5509ELG-LF SE5509FLG-LF 509Alz 509BLz 509CLz 509DLz 509ELz 509FLz
Marking Information
Starting with 9, a bar on top of 9 is for production year 2005, and underlined 9 is for year 2006. The naming pattern continues with consecutive characters for later years. The last character is the week code. (A-Z:
1-26,
a-z: 27-52)
A dot on top right corner is for lead-free process. LF: lead free.
Absolute Maximum Rating (1)
Parameter Input Voltage Enable Voltage Output Voltage Power Dissipation Output Short Circuit Duration Thermal Resistance, Junction-to-Ambient Lead Temperature (Soldering, 5 sec.) Junction Temperature Storage Temperature
(2)
Symbol VIN VEN VOUT PD
Value 6 -0.3 to VIN -0.3 to 4.6 Internally Limited Infinite
(3)
Units V V V
JA TJ TS
230 260 0 to +150 -40 to +150
C/W C C C
Operating Rating
Parameter Supply Input Voltage Range Junction Temperature Range
Symbol VIN TJ
Value 5.5 0 to +125
Units V C
Electrical Characteristics
VIN = 5V; VEN=VIN; CIN = 2.2F; COUT = 2.2F; IOUT = 10mA; TJ = 25C; unless otherwise noted
Symbol
Parameter
Conditions SE5509 - 1.5 (VIN=1.8V) SE5509 - 1.8 (VIN=3.3V) SE5509 - 2.5 SE5509 - 2.8 SE5509 - 3.0 SE5509 - 3.3 VIN = (VOUT + 0.8)V to 5.5V VIN = (VOUT + 0.8)V or 2.5V IOUT = 10mA to 300mA
Min 1.470 1.764 2.450 2.744 2.940 3.234 ---
Typ 1.5 1.8 2.5 2.8 3.0 3.3 0.2 2.0
Max 1.530 1.836 2.550 2.856 3.060 3.366 ---
Unit
VOUT
Output Voltage Accuracy
V
VOUT VOUT
Line Regulation Load Regulation (5)
%/V %
Revision 12/5/2008 Preliminary and all contents are subject to change without prior notice (c) Seaward Electronics Inc., 2006. * www.seawardinc.com.cn * Page 2
300mA Low Power Low Noise LDO CMOS Voltage Regulator
Electrical Characteristics (Continued)
VIN = 5V; CIN = 2.2F; COUT = 2.2F; IOUT = 10mA; TJ = 25C; unless otherwise noted
SE5509
Symbol
Parameter Output Voltage
Conditions
Min
Typ
Max
Unit
VOUT/T
Temperature Coefficient Dropout Voltage (6) (VOUT>3.0V)
Note 4
--
0.1
--
mV/C
IOUT = 10mA IOUT = 150mA IOUT = 300mA Thermal Protection Temperature Protection Hysterisys f =10kHz,IOUT=50mA,Cbypass=0.1F VEN = 0.4V VEN = VIN
Voltage Raising, Output Turns On, Logic High Voltage Falling, Output Turns Off, Logic Low
--------1.6 ---
8 200 350 150 20 70 0.1 20 --600
---------0.4 -C dB A mV
VIN - VOUT
TPROTECTION PSRR IQ
Thermal Protection Ripple Rejection Quiescent Current Enable Input Threshold Voltage Current Limit
VTH(EN) ILIMIT
V mA
Note 1: Exceeding the absolute maximum rating may damage the device. Note 2: The device is not guaranteed to function outside its operating rating. Note 3: The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: 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. See "Thermal Consideration" section for details Note 4: Output voltage temperature coefficient is the worst case voltage change divided by the total temperature range. Note 5: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range from 0.1mA to 300mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification. Note 6: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 0.8V differential.
Revision 12/5/2008 Preliminary and all contents are subject to change without prior notice (c) Seaward Electronics Inc., 2006. * www.seawardinc.com.cn * Page 3
300mA Low Power Low Noise LDO CMOS Voltage Regulator
Load Regulation (VIN=4.3V) 3.40 3.35 VOUT (V) 3.30 3.25 3.20 3.15 0 100 200 IOUT (mA)
SE5509
Line Regulation (IOUT=10mA)
3.40 3.35 VOUT (V) 3.30 3.25 3.20 3.15 3.60 4.10 4.60 5.10
300
400
VIN (V)
IQ VS. IOUT(VOUT=3.3V) 32 30 IQ (A) IQ (A) 28 26 24 22 20 0 50 100 150 200 IOUT (mA) 250 300 350 27.5 27.0 26.5 26.0 25.5 25.0 3.6
IQ VS. VIN(VOUT=3.3V)
4.0
4.4 4.8 VIN (V)
5.2
5.6
Load Transient Response (VOUT = 3.3V) (IOUT=10mA to 300mA)
Input Transient Response (VOUT = 3.3V) (VIN=3.6V to 5.0V)
PSRR (VIN=VOUT+1V+0.5Vp-pACIOUT=50mACbypass=0.1F)
80 70 60 50 40 30 20 10 0 0.1 1 10 Frequency (kHz) 100
Revision 12/5/2008 Preliminary and all contents are subject to change without prior notice (c) Seaward Electronics Inc., 2006. * www.seawardinc.com.cn * Page 4
PSRR (dB)
300mA Low Power Low Noise LDO CMOS Voltage Regulator
Application Hints
Like any low dropout regulator, SE5509 requires external capacitors to ensure stability. ensure performance. The external capacitors must be carefully selected to
SE5509
Thermal Considerations
It is important that the thermal limit of the package is not exceeded. protection. to ground. The SE5509 has built-in thermal When the thermal limit is exceeded, The power dissipation for a given
the IC will enter protection, and VOUT will be pulled application can be calculated as following: The power dissipation (PD) is PD = IOUT * [VIN - VOUT] The thermal limit of the package is then limited to PD(MAX) = [TJ - TA]/JA where TJ is the junction temperature, TA is the ambient temperature, and JA is around 230C/W for SE5509. SE5509 is designed to enter thermal protection at 150C. For example, if TA is 25C then the maximum PD is limited to about 0.6W. In other words, if IOUT(MAX) = 300mA, then [VIN - VOUT] cannot exceed 2V.
Input Capacitor
An input capacitor of at least 1F is required. Ceramic or Tantalum can be used. The value can be increase without upper limit.
Output Capacitor
An output capacitor is required for stability. It must be placed no more than 1 cm away from the VOUT pin, and connected directly between VOUT and GND pins. Electrolytical capacitor is recommended. The minimum value is 1F but may be increase without limit. Ceramic can be used. But the value should not be more than 2.2F.
Application Diagram
Revision 12/5/2008 Preliminary and all contents are subject to change without prior notice (c) Seaward Electronics Inc., 2006. * www.seawardinc.com.cn * Page 5
300mA Low Power Low Noise LDO CMOS Voltage Regulator
OUTLINE DRAWING SOT-23-5L
K B H D
SE5509
DIMN A B C D E F H J K
DIMENSIONS INCHES MM MIN MAX MIN MAX
0.110 0.059 0.036 0.014 0.0035 0.102 0.120 0.070 0.051 0.020 0.037 0.075 0.006 0.008 0.118 2.80 1.50 0.90 0.35 0.090 2.60 3.05 1.75 1.30 0.50 0.95 1.90 0.15 0.20 3.00
A
F E
C
J
OUTLINE DRAWING TSOP-5
K B H D
DIM A B C D E F H J K
N
DIMENSIONS INCHES MM MIN MAX MIN MAX
0.110 0.059 0.036 0.014 0.0035 0.102 0.120 2.80 0.070 1.50 0.040 0.90 0.020 0.35 0.037 0.075 0.006 0.008 0.090 0.118 2.60 3.05 1.75 1.00 0.50 0.95 1.90 0.15 0.20 3.00
A
F E
C
J
Revision 12/5/2008 Preliminary and all contents are subject to change without prior notice (c) Seaward Electronics Inc., 2006. * www.seawardinc.com.cn * Page 6
300mA Low Power Low Noise LDO CMOS Voltage Regulator
SE5509
Customer Support
Seaward Electronics Incorporated - China Section B, 2nd Floor, ShangDi Scientific Office Complex, #22 XinXi Road Haidian District, Beijing 100085, China Tel: 86-10-8289-5700/01/05 Fax: 86-10-8289-5706 Seaward Electronics Corporation - Taiwan 2F, #181, Sec. 3, Minquan East Rd, Taipei, Taiwan R.O.C Tel: 886-2-2712-0307 Fax: 886-2-2712-0191 Seaward Electronics Incorporated - North America 1512 Centre Pointe Dr. Milpitas, CA95035, USA Tel: 1-408-821-6600 Last Updated - 12/5/2008
Revision 12/5/2008 Preliminary and all contents are subject to change without prior notice (c) Seaward Electronics Inc., 2006. * www.seawardinc.com.cn * Page 7

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