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Preliminary Datasheet 150mA RF ULDO REGULATOR General Description
The AP2202 is a 150mA ULDO regulator which provides very low noise (45Vrms at 80Hz-100KHz), ultra low dropout voltage (typically 165mV at 150mA), very low quiescent current (1A maximum) and excellent power supply ripple rejection (PSRR 75dB at 100Hz) in battery powered applications, such as handsets and PDAs and in noise sensitive applications, such as RF electronics. The AP2202 also features logic compatible enable/ shutdown control inputs, a low power shutdown mode for extended battery life, over current protection, over temperature protection, as well as reversed-battery protection. The output capacitor of 1.0F minimum and 2.2F minimum near its pin are recommended when CBYP is unused and 470pF respectively. Tantalum or aluminium electrolytic capacitors are adequate. Bypass capacitor is connected to the internal voltage reference to quiet noise. Its recommended value is from 470pF to 1nF. If output noise is not a major concern and rapid turn-on is necessary, omit CBYP and leave BYP open. The AP2202 has adjustable, 2.5V, 2.6V, 2.7V, 2.8V, 2.9V, 3.0V, 3.3V and 4.0V versions. The AP2202 is available in space saving SOT-23-5 package.
AP2202 Features
* * * * * * * * * * * * * Up to 150mA Regulator Output Low Quiescent Current Low Dropout Voltage: VD=165mV at 150mA High Precision Output Voltage: 1% Output Noise: 45Vrms at 80Hz-100KHz Good Ripple Rejection Ability: 75dB at 100Hz and IOUT=100A Tight Load and Line Regulation Low Temperature Coefficient Over Current Protection Thermal Protection Reverse-battery Protection Zero Off-mode Current Logic-controlled Enable
Applications
* * * * * * * Cellular Phones Cordless Phones Digital Still Cameras Wireless Communicators PDAs / Palmtops PC Mother Board Consumer Electronics
SOT-23-5
Figure 1. Package Type of AP2202
Aug. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 150mA RF ULDO REGULATOR Pin Configuration AP2202
K Package (SOT-23-5)
VIN GND EN
1 2 3
5
VOUT
4
BYP/ADJ
Figure 2. Pin Configuration of AP2202 (Top View)
Pin Description
Pin Number 1 2 3 4 5 Pin Name VIN GND EN BYP/ADJ VOUT Input voltage. Ground. Logic high enable input. Bypass capacitor for low noise operation/Adjust output. Regulated output voltage. Function
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BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 150mA RF ULDO REGULATOR Functional Block Diagram AP2202
VIN
1
5
VOUT
BYP
4
Bandgap Ref.
EN
3
Current Limit Thermal Shutdown
2
GND
Fixed Regulator
VIN
1
5
VOUT
4
Bandgap Ref.
ADJ
EN
3
Current Limit Thermal Shutdown
2
GND
Adjustable Regulator
Figure 3. Functional Block Diagram of AP2202
Aug. 2005 Rev. 1. 3
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Preliminary Datasheet 150mA RF ULDO REGULATOR Ordering Information
AP2202 E1: Lead Free Blank: Tin Lead TR: Tape and Reel Package K: SOT-23-5 ADJ: Adjustable Output 2.5: Fixed Output 2.5V 2.6: Fixed Output 2.6V 2.7: Fixed Output 2.7V 2.8: Fixed Output 2.8V 2.9: Fixed Output 2.9V 3.0: Fixed Output 3.0V 3.3: Fixed Output 3.3V 4.0: Fixed Output 4.0V
Part Number Tin Lead Lead Free Marking ID Packing Type Tin Lead K2C K2D K2E K2F K2G K2H K2I K2L K2S Lead Free E2C E2D E2E E2F E2G E2H E2I E2L E2S Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel AP2202K-ADJTR AP2202K-ADJTRE1 AP2202K-2.5TR AP2202K-2.6TR AP2202K-2.7TR SOT-23-5 -40 to 125oC AP2202K-2.8TR AP2202K-2.9TR AP2202K-3.0TR AP2202K-3.3TR AP2202K-4.0TR AP2202K-2.5TRE1 AP2202K-2.6TRE1 AP2202K-2.7TRE1 AP2202K-2.8TRE1 AP2202K-2.9TRE1 AP2202K-3.0TRE1 AP2202K-3.3TRE1 AP2202K-4.0TRE1
AP2202
Circuit Type
Package
Temperature Range
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Aug. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 150mA RF ULDO REGULATOR Absolute Maximum Ratings (Note 1)
Parameter Supply Input Voltage Enable Input Voltage Power Dissipation Lead Temperature (Soldering, 5sec) Storage Temperature ESD (Machine Model) Thermal Resistance JA Symbol VIN VEN PD TLEAD TSTG Value 15 15 Internally Limited 260 -65 to 150 200 (Note 2) Unit V V W
o o
AP2202
C C
V
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Note 2: Electrical specifications do not apply when operating the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max), the junction-to-ambient thermal resistance, JA, and the ambient temperature, TA. The maximum allowable power dissipation at any 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.
Recommended Operating Conditions
Parameter Supply Input Voltage Enable Input Voltage Operating Junction Temperature Symbol VIN VEN TJ Min 2.5 0 -40 Max 13.2 13.2 125 Unit V V
o
C
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BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 150mA RF ULDO REGULATOR Electrical Characteristics
VIN=VOUT +1V, IOUT = 100A, CL = 2.2F, VEN 2.0V, TJ = 25oC, Bold typeface applies over -40oCAP2202-ADJ VIN= VOUT +1V to 13.2V AP2202-2.5V VIN= VOUT +1V to 13.2V AP2202-2.6V VIN= VOUT +1V to 13.2V AP2202-2.7V VIN= VOUT +1V to 13.2V Line Regulation VRLINE AP2202-2.8V VIN= VOUT +1V to 13.2V AP2202-2.9V VIN= VOUT +1V to 13.2V AP2202-3.0V VIN= VOUT +1V to 13.2V AP2202-3.3V VIN= VOUT +1V to 13.2V AP2202-4.0V VIN= VOUT +1V to 13.2V AP2202-ADJ IOUT= 0.1mA to 150mA AP2202-2.5V IOUT= 0.1mA to 150mA AP2202-2.6V IOUT= 0.1mA to 150mA Load Regulation (Note 4) VRLOAD AP2202-2.7V IOUT= 0.1mA to 150mA AP2202-2.8V IOUT= 0.1mA to 150mA AP2202-2.9V IOUT= 0.1mA to 150mA AP2202-3.0V IOUT= 0.1mA to 150mA Min -1 -2 120 0.004 1 1 1 1 1 1 1 1 0.02 1 1 1 1 1 1 0.012 0.05 3 13 3 13 4 14 4 14 4 14 4 14 5 15 6 17 0.2 0.5 5 13 6 14 6 14 6 14 7 15 7 15 mV % mV Typ Max 1 2 V/oC %/V Unit %
AP2202
Aug. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 150mA RF ULDO REGULATOR Electrical Characteristics (Continued)
VIN=VOUT +1V, IOUT = 100A, CL = 2.2F, VEN 2.0V, TJ = 25oC, Bold typeface applies over -40oCAP2202-3.3V IOUT= 0.1mA to 150mA AP2202-4.0V IOUT= 0.1mA to 150mA IOUT=100A IOUT=50mA Dropout Voltage (Note 5) VIN-VO IOUT=100mA IOUT=150mA Quiescent Current IQ VEN 0.4V (shutdown) VEN 0.18V (shutdown) VEN 2.0V, IOUT=0A VEN 2.0V, IOUT=100A Ground Pin Current (Note 6) IGND VEN 2.0V, IOUT=50mA VEN 2.0V, IOUT=100mA VEN 2.0V, IOUT=150mA Ripple Rejection Current Limit Output Noise (Regulator B only) Enable Input Voltage Enable Input Voltage Enable Input Current Enable Input Current Logic-Low Logic-High Logic-Low Logic-High PSRR ILIMIT eno VIL VIH IIL IIH frequency=100Hz, IOUT=100A VOUT = 0V IOUT=50mA, CL=2.2F, 470 pF from BYP to GND Regulator shutdown Regulator enabled VIL 0.4V VIL 0.18V VIL 2.0V VIL 2.0V 5 2.0 0.01 -1 -2 20 25 A 95 98 350 600 1300 75 320 260 0.4 0.18 V A 550 140 165 0.01 Min Typ 1 1 15 110 Max 8 17 9 20 50 70 150 230 250 300 275 350 1 5 130 150 140 160 600 800 1000 1500 1900 2500 dB mA
nV / Hz
AP2202
Unit
Load Regulation (Note 4)
VRLOAD
mV
mV
A
A
V
Aug. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 150mA RF ULDO REGULATOR Electrical Characteristics (Continued)
Note 3: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range. Note 4: 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 150mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification. Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. Note 6: Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of the load current plus the ground pin current.
AP2202
Typical Performance Characteristics
2.900 2.875 2.850
350
IOUT=50mA
AZ2202-2.8V
300
IOUT=100mA IOUT=150mA CIN=1.0F, CL=2.2F, CBYP=1nF
Output Voltage (V)
2.825 2.800 2.775 2.750 2.725 2.700 -60
Dropout Voltage (mV)
-40 -20 0 20 40 60
o
250
200
150
100
50
80
100
120
140
0 -60
-40
-20
0
20
40
60
o
80
100
120
140
Junction Temperature ( C)
Junction Temperature ( C)
Figure 4. Output Voltage vs. Junction Temperature
Figure 5. Dropout Voltage vs. Junction Temperature
6 5 4
5000
4000
AP2202-2.8V IOUT=50mA IOUT=100mA IOUT=150mA VIN=3.8V,VEN=2.0V,CIN=1.0F, CL=2.2F,CBYP=1nF
Quiescent Current (A)
Quiescent Current (mA)
3 2 1 0 -1 -2
3000
2000
1000
0
-1000
-3 -4 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
-2000 -60 -40 -20 0 20 40 60
o
80
100
120
140
Output Current (mA)
Junction Temperature ( C)
Figure 6. Quiescent Current vs. Output Current
Figure 7. Quiescent Current vs. Junction Temperature
Aug. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 150mA RF ULDO REGULATOR Typical Performance Characteristics (Continued) AP2202
20 18 16
2.0
AP2202-2.8V
VEN=1.8V VEN=2.0V VEN=3.0V
1.9 1.8 1.7
AP2202-2.8V VEN=on VEN=off CIN=1.0F,CL=2.2F,CBYP=1nF VIN=3.8V,IOUT=5mA
Enable Current (A)
14 12 10 8 6 4 2 0 -60
Enable Voltage (V)
140
VEN=4.0V VIN=3.8V, CIN=1.0F, CL=2.2F, IOUT=100A, CBYP=1nF
1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7
-40
-20
0
20
40
60
80
o
100
120
0.6 -60
-40
-20
0
20
40
60
80
o
100
120
140
Junction Temperature ( C)
Junction Temperature ( C)
Figure 8. Enable Current vs. Junction Temperature
Figure 9. Enable Voltage vs. Junction Temperature
200
Output Current
AP2202-2.8V
150
Noise (Vrms)
100
50
0 10
100
1000
10000
Bypass Capacitor (pF)
Output Voltage
Time (s)
Figure 10. Noise vs. Bypass Capacitor
Figure 11. Load Transient (Conditions: VIN=3.8V, CBYP=680pF, VEN=2V, IOUT=5mA to 50mA, CL=2.2F)
Aug. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 150mA RF ULDO REGULATOR Typical Performance Characteristics (Continued) AP2202
Input Voltage
AP2202-2.8V
Output Voltage
Output Voltage
Enable Voltage
AP2202-2.8V
Time (s)
Time (s)
Figure 12. Line Transient (Conditions: VIN=3.8V to 4.8V, VEN=2V, IOUT=100A CBYP=680pF, CL=10F)
Figure 13. VEN(on) vs. VO (Conditions: VEN=0V to 2V, VIN=3.8V, IOUT=30mA, CBYP=open, CL=2.2F)
0 -10 -20 -30
AP2202-2.8V
PSRR (dB)
-40 -50 -60 -70 -80 -90 -100 100
1k
10k
100k
1M
10M
Frequency (Hz)
Figure 14. PSRR vs. Frequency ( Conditions: CIN =1.0F, CL = 2.2F, CBYP= open, VIN=3.8V, IOUT=10mA, VEN=2V)
Aug. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 150mA RF ULDO REGULATOR Typical Application
VIN=3.8V V IN C V IN
AP2202
AP2202-2.8V
V OUT EN
VOUT=2.8V
V OUT C
+ GND BYP C BYP
IN 1.0F
OUT 2.2F tantalum
470pF
AP2202-ADJ
V IN C V IN GND
V
OUT R1 +
V
OUT
IN 1.0 F
EN
ADJ BYP optional C R2
C OUT 2.2 F tantalum
VOUT=1.25* (1+R2/R1)
Figure 15. Typical Application of AP2202
Application Information
External Capacitors Regarding good performance of regulator stability, external capacitors required by the AP2202 should be prudently selected. Input Capacitor If there is more than 10 inches of wire between the input and the AC filter, or if a battery is used as the input, a 1F capacitor should be placed from IN to GND. Output Capacitor It is required to prevent oscillation. 1.0F minimum is recommended when CBYP is unused. 2.2F minimum is recommended when CBYP is 470pF. The output capacitor may be increased without limit for large values to improve transient response. In most cases, tantalum or aluminium electrolytic capacitors are adequate. Noise Bypass Capacitor Bypass capacitor is connected to the internal voltage reference. A 680pF capacitor connected from BYP to GND leads reference to be quiet which results in a significant reduction in output noise. When using CBYP, output capacitors of 2.2F or greater are required for better stability. The start-up speed of the AP2202 is inversely proportional to the value of reference bypass capacitor. In some cases, if output noise is not a major concern and rapid turn-on is necessary, omit CBYP and leave BYP open.
Aug. 2005 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 150mA RF ULDO REGULATOR Mechanical Dimensions SOT-23-5 Unit: mm(inch) AP2202
2.820(0.111) 3.020(0.119)
0.100(0.004) 0.200(0.008)
2.650(0.104)
2.950(0.116)
1.500(0.059) 1.700(0.067)
0.200(0.008)
0.700(0.028) REF
0.950(0.037) TYP
0.300(0.012) 0.400(0.016) 1.800(0.071) 2.000(0.079)
0.300(0.012) 0.600(0.024)
0 8
1.050(0.041)
1.250(0.049)
0.000(0.000) 0.100(0.004)
1.050(0.041) 1.150(0.045)
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BCD Semiconductor Manufacturing Limited
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IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others.

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