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AP131
300mA Low Dropout Linear Regulator with Shutdown Features
- Input voltage range is up to 7V - Dropout voltage 400mV at 300mA output current - Guaranteed 300mA output current. - Internal Ron =1.5 PMOS draws no base current - Low quiescent current 50A - Output voltage 2% accuracy, and 1.5V to 5V with 0.1V step - Active low shutdown function (EN pin). - Fast transient response - Good load regulation - Current limit and thermal shutdown protection - SOT89-5L and SOT23-5L packages
General Descriptions
The AP131 is a 300mA, fixed output voltage, low dropout linear regulator. The Device included pass element, error amplifier, band-gap, current limit and thermal shutdown circuitry. The device is ON when EN pin is set to logic high level. The characteristics of low dropout voltage and less quiescent current make it good for some critical current application, for example, some battery powered devices. The typical quiescent current is approximately 50A from zero to maximum load. Due to internal flexible design, result in extensively fixed output voltage versions and make it convenient to use for applications. Built-in current-limit and thermal-shutdown functions prevent any fault condition from IC damage. An external capacitor can be connected to the BP pin and reduce the output noise.
Applications
- Wireless Communication - Battery Powered device - CD-ROM, DVD, and LAN Card - PC peripheral
Pin Assignments
(Top View) EN GND IN 1 2 3 4 OUT 5 BP
Pin Descriptions
Name IN GND EN BP OUT Description Input voltage Ground Enable pin Bandgap Output voltage
SOT89-5L (Top View) IN GND EN 1 2 3 4 BP 5 OUT
SOT23-5L
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
Rev. 1.2 Oct 28, 2004 1/7
AP131
300mA Low Dropout Linear Regulator with Shutdown Ordering Information
AP131 XX X X X
Output voltage 15: 1.5V 25: 2.5V 50: 5.0V ~ ~
Package Y : SOT89-5L W: SOT23-5L
Lead Free Blank : Normal L : Lead Free Package
Packing Blank:Tube A : Taping
Block Diagram
IN Error Amp
OUT
Current Limit EN Enable
-
+
Bandgap 1.08V Thermal Shutdown BP GND
Absolute Maximum Ratings
Symbol VCC TOP TST PD Parameter Input voltage Operating junction temperature range Storage temperature range Power dissipation, PD @TA=25C SOT89-5L SOT23-5L Package thermal resistance SOT89-5L SOT23-5L Rating -0.1 to +7 -40 to +125 -65 to +150 +0.5 +0.25 +100 +250 Unit V C C W W C/W C/W
JA
Anachip Corp. www.anachip.com.tw 2/7
Rev. 1.2
Oct 28, 2004
AP131
300mA Low Dropout Linear Regulator with Shutdown Electrical Characteristics
TA=25C, CIN=1F, COUT=10F, unless otherwise specified.
Symbol VDROP ILIMIT VLINE VLOAD VOUT
Parameter Dropout voltage (Note 1) Current Limit (Note 2) Line regulation Load regulation (Note 3) Output voltage accuracy Output voltage temperature coefficient (Note 4) Ripple Rejection Standby current Quiescent current Enable pin current Enable pin voltage Enable delay time
Conditions IL=300mA VIN=5V, VOUT=0V IL=1mA, VIN=5~7V IL=1~300mA, VIN=5V IL=1mA, VIN=5V
Min. 350 -2 -
Typ. 400 450 0.1 30 50 60 50 8
Max. 500 0.3 35 +2 150 5 100 < 0.1 VIN 0.8 -
Unit mV mA %/V mV % PPM/C dB A A A V V S
PSRR ISB IQ IEN VENON VENOFF TDELAY
F=100Hz, CIN=1F, CO=10uF, IL=100mA IL=0mA, VIN=5V, EN=0V IL=0mA, VIN=5V, EN=5V Output ON Output OFF CBP=0.1F, COUT=1F, IOUT=30mA
1.5 0 -
Note 1. Dropout voltage is defined as the input to output differential voltage. Dropout is measured at constant junction temperature by using pulsed ON time, and the criterion is VOUT inside target value 2%. This test is skipped at the condition of VIN<3V. Note 2. Current limit is measured at constant junction temperature by using pulsed testing with a low ON time. Note 3. Regulation is measured at constant junction temperature by using pulsed testing with a low ON time. Note 4. Guaranteed by design.
Typical Application Circuit
AP131
VIN CIN 1uF IN GND EN OUT BP CBP 0.1uF ON EN OFF VOUT COUT 10uF
Anachip Corp. www.anachip.com.tw 3/7
Rev. 1.2
Oct 28, 2004
AP131
300mA Low Dropout Linear Regulator with Shutdown Typical Characteristics
AP131 PSRR V.S. Frequency AP131 GND Current V.S. Input Voltage
70 65 60 55 50 45 40 35 30 25 20 15 10 5 0
55 50 45 40 35 30 25 20 15 10 5 0
GND Current (uA)
10 100 1K 10K 100K 1M
PSRR (dB)
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
Frequency (Hz)
Input Voltage (V)
PSRR V.S. Frequency
GND Current V.S. Input Voltage
3.095 3.09 3.085 3.08 3.075 3.07 3.065 3.06 3.055 3.05 3.045 3.04 3.035 3.03 3.025 3.02
0
AP131 Vout V.S. Load Current
AP131 Dropout V.S. Load
0.3 0.25
Dropout (V)
0.2 0.15 0.1 0.05 0
Vout (V)
30
60
Load Current (uA)
90 120 150 180 210 240 270 300 330
0
50
100
150
200
250
300
350
Load (Io) (mA)
Vout V.S. Load Current
Dropout V.S. Load
Anachip Corp. www.anachip.com.tw 4/7
Rev. 1.2
Oct 28, 2004
AP131
300mA Low Dropout Linear Regulator with Shutdown Marking Information
(Top View)
5 4
Identification code (See appendix)
XX Y M X
1 2 3
Blank: normal L: Lead Free Package Month: A~L Year:0~9
SOT23-5L
(Top View) Identification code (See appendix)
5 4
XX Y MX
1 2 3
Blank: normal L: Lead Free Package Month: A~L Year: 0~9
SOT89-5L
Appendix Part Number
SOT23 SOT89
Identification code
DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR
Part Number
SOT23 SOT89
Identification code
DS DT DU DV DW DX DY DZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9
AP131-15W AP131-16W AP131-17W AP131-18W AP131-19W AP131-20W AP131-21W AP131-22W AP131-23W AP131-24W AP131-25W AP131-26W AP131-27W AP131-28W AP131-29W AP131-30W AP131-31W AP131-32W
AP131-15Y AP131-16Y AP131-17Y AP131-18Y AP131-19Y AP131-20Y AP131-21Y AP131-22Y AP131-23Y AP131-24Y AP131-25Y AP131-26Y AP131-27Y AP131-28Y AP131-29Y AP131-30Y AP131-31Y AP131-32Y
AP131-33W AP131-34W AP131-35W AP131-36W AP131-37W AP131-38W AP131-39W AP131-40W AP131-41W AP131-42W AP131-43W AP131-44W AP131-45W AP131-46W AP131-47W AP131-48W AP131-49W AP131-50W
AP131-33Y AP131-34Y AP131-35Y AP131-36Y AP131-37Y AP131-38Y AP131-39Y AP131-40Y AP131-41Y AP131-42Y AP131-43Y AP131-44Y AP131-45Y AP131-46Y AP131-47Y AP131-48Y AP131-49Y AP131-50Y
Anachip Corp. www.anachip.com.tw 5/7
Rev. 1.2
Oct 28, 2004
AP131
300mA Low Dropout Linear Regulator with Shutdown Package Information
(1) Package Type: SOT89-5L
A C D 1.7 0.5 F
E
B
1.2
F
0.55 I H G
1.1
0.4
1.5
Land Pattern Recommendation (Unit: mm)
L
J
Symbol A B C D E F G H I J K L
Dimensions In Millimeters Min. Nom. Max. 4.40 4.50 4.60 4.05 4.15 4.25 1.50 1.60 1.70 1.30 1.40 1.50 2.40 2.50 2.60 0.80 3.00 Ref. 1.50 Ref. 0.40 0.46 0.52 1.40 1.50 1.60 0.35 0.39 0.43 5o Typ.
K
Dimensions In Inches Min. Nom. Max. 0.173 0.177 0.181 0.159 0.163 0.167 0.059 0.063 0.067 0.051 0.055 0.059 0.094 0.098 0.102 0.031 0.118 Ref. 0.059 Ref. 0.016 0.018 0.020 0.055 0.059 0.063 0.014 0.015 0.017 5o Typ.
Anachip Corp. www.anachip.com.tw 6/7
Rev. 1.2
4.6
Oct 28, 2004
AP131
300mA Low Dropout Linear Regulator with Shutdown Package Information (Continued)
(2) Package Type: SOT23-5L
D e1
1(4x)
5
4 0.10 C 5x Seating Plane A1
2(4x)
E1
E
A
A2
1 e
2
3 b
With Plating
b1
C
C1
Gauge Plane 0.25 mm
Base Metal
b
L L1
Symbol A A1 A2 b b1 c c1 D E E1 L L1 e e1 1 2
Dimensions In Millimeters Min. 1.05 0.05 1.00 0.25 0.25 0.08 0.08 2.70 2.60 1.50 0.35 Nom. 1.20 0.10 1.10 0.40 0.11 2.85 2.80 1.60 0.45 0.60 Ref. 0.95 Bsc. 1.90 Bsc. 0o 3o 6o 5o 5o 8o 10o 7o 10o Max. 1.35 0.15 1.20 0.55 0.45 0.20 0.15 3.00 3.00 1.70 0.55
Dimensions In Inches Min. 0.041 0.002 0.039 0.010 0.010 0.003 0.003 0.106 0.102 0.059 0.014 Nom. 0.047 0.004 0.043 0.016 0.004 0.112 0.110 0.063 0.018 0.024 Ref. 0.037 Bsc. 0.075 Bsc. 0o 3o 6o 5o 5o 8o 10o 7o 10o Max. 0.053 0.006 0.047 0.022 0.018 0.008 0.006 0.118 0.118 0.067 0.022
Anachip Corp. www.anachip.com.tw 7/7
Rev. 1.2
Oct 28, 2004

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