AP2202
150mA RF ULDO REGULATOR
Description Pin Assignments
The AP2202 is a 150mA ULDO regulator which provides very low
noise, ultra low dropout voltage (typically 165mV at 150mA), very low (Top View) (Top View)
standby current (1A maximum) and excellent power supply ripple
rejection (PSRR 75dB at 100Hz) in battery powered applications,
V
V IN 1 5
IN 1 5 V
V OUT
OUT
such as handsets and PDAs and in noise sensitive applications, such
as RF electronics.
2
2 GND
GND
The AP2202 also features logic compatible enable/shutdown control
3 4
3 4 BYP EN ADJ
EN
inputs, a low power shutdown mode for extended battery life, over
current protection, over temperature protection, as well as reversed-
SOT-23-5
battery protection.
(Top View) (Top View)
The AP2202 has adjustable, 2.5V, 2.6V, 2.8V, 3.0V and 3.3V
versions.
The AP2202 is available in space saving SOT-23-5 and SOT-89
packages.
Features
Up to 150mA Output Current
1 2 3 1 2 3
Low Standby Current
V GND V V GND V
OUT IN OUT IN
Low Dropout Voltage: V = 165mV at 150mA
DROP
(TAB) (TAB)
High Output Accuracy: 1%
Good Ripple Rejection Ability: 75dB at 100Hz and I = 100A
OUT SOT-89 (Option 1) SOT-89 (Option 2)
Tight Load and Line Regulation
Low Temperature Coefficient
Applications
Over Current Protection
Thermal Protection
Cellular Phones
Reverse-battery Protection
Cordless Phones
Logic-controlled Enable
Digital Still Cameras
Lead-Free Packages: SOT-23-5, SOT-89
Wireless Communicators
Totally Lead-Free; RoHS Compliant (Notes 1 & 2)
PDAs / Palmtops
Lead-Free Packages, Available in Green Molding Compound: PC Mother Board
SOT-23-5, SOT-89 Consumer Electronics
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. Green Device (Note 3)
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See
AP2202
Typical Applications Circuit (Note 4)
V =3.8V
IN
AP2202-2.8 V =2.8V
OUT
V V V
V
IN IN OUT OUT
EN
C
OUT
C
IN
GND BYP
1.0 F 2.2 F
C
BYP
100pF
AP2202-ADJ
V V V
IN IN OUT
V
OUT
R1
C EN GND ADJ C
IN OUT
1.0 F 2.2 F
C R2
BYP
optional
V =1.25* (1+R2/R1)
OUT
Note 4: Dropout voltage is 165mV when T =+25C. In order to obtain a normal output voltage, V +0.165V is the minimum input voltage which will result a low
A OUT
PSRR, imposing a bad influence on system. Therefore, the recommended input voltage is V +0.5V to 13.2V. For AP2202-2.8 version, its input voltage
OUT
can be set from 3.3V(V +0.5V) to 13.2V. For that of ADJ version, any value from V +0.5V to 13.2V is available. R1 and R2 must be correctly selected
OUT OUT
when setting the output voltage. For example, if 3.0V output voltage is required, R1 and R2 can be set to 10k and 14k respectively. For ADJ version, we
recommend 2.3V as minimum output voltage.
Pin Descriptions
Pin Number
Pin Name Function
SOT-23-5 SOT-89
1 3 V Input voltage
IN
2 2 GND Ground (TAB for SOT-89)
Enable input: CMOS or TTL compatible input. Logic high=enable, logic
3 EN
low=shutdown
4 BYP/ADJ Bypass capacitor for low noise operation/Adjust output
5 1 V Regulated output voltage
OUT
2 of 27
AP2202 January 2018
Diodes Incorporated
www.diodes.com
Document number: DS38214 Rev. 3 - 2