NOT RECOMMENDED FOR NEW DESIGN - USE AP7361C
AP7361
1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE
Description Pin Assignments
The AP7361 is a 1A, adjustable and fixed output voltage, ultra-low
(Top View)
dropout linear regulator with enable. The device includes pass
element, error amplifier, band-gap reference, current limit and thermal
OUT 1 8 IN
shutdown circuitry. The device is turned on when the EN pin is set to
NC
NC 2 7
logic high level. GND
NC
ADJ/NC
3 6
EN
GND
4 5
The characteristics of the low dropout voltage and low quiescent
current make it suitable for low to medium power applications, for
U-DFN3030-8
example, laptop computers, audio and video applications, and battery
powered devices. The typical quiescent current is approximately
( Top View )
( Top View )
70A. Built-in current-limit and thermal-shutdown functions prevent
3
3
IC from damage in fault conditions.
2
2
2
The AP7361 is available in U-DFN3030-8, SOT89-5, SOT223, TO252
and SO-8EP package.
1
1
SOT223/SOT223R
TO252/TO252R
Features
Wide input voltage range: 2.2V - 6V
(Top View)
(Top View)
150mV Very Low Dropout at 300mA Load
OUT 1 8 IN
500mV Very Low Dropout at 1A Load
OUT
EN 1 5
Low Quiescent Current (I ): 70A Typical
Q 2 7 NC
EN
Adjustable Output Voltage Range: 1V to 5.0V
GND
GND 2 3 6
NC
NC
Fixed Output Options: 1V to 3.3V
4 5
GND NC
ADJ/NC 3 4 IN
Very-Fast Transient Response
SO-8EP
High PSRR SOT89-5
Accurate Voltage Regulation
Current Limiting and Short Circuit Protection
Applications
Thermal Shutdown Protection
Stable with Ceramic Output Capacitor 2.2F
Servers and Laptops
Ambient Temperature Range -40C to +85C
FPGA and DSP Core or I/O Power
U-DFN3030-8, SOT89-5, SOT223/SOT223R, TO252/TO252R
TV, and Home Electrical Appliances
and SO-8EP
Battery-Powered Devices
Available in Green Molding Compound (No Br, Sb)
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) compliant.
2. See
AP7361
Typical Applications Circuit
V
V IN V
IN V OUT
OUT
IN OUT IN OUT
AP7361
AP7361
R1
1uF
1uF 4.7uF
4.7uF
Enable
Enable
ADJ
EN
EN
GND
GND
R2
Fixed Version Adjustable Output
U-DFN3030-8, SOT89-5 and SO-8EP U-DFN3030-8 and SOT89-5
V V
IN
OUT
IN
OUT
AP7361
1uF
4.7uF
GND
Fixed Version
TO252, SOT223
Pin Descriptions
Pin Number
Pin
Function
Name
U-DFN3030-8 SOT89-5 TO252 TO252R SOT223 SOT223R SO-8EP
The input of the regulator. Bypass to ground through at
IN 8 4 1 3 1 3 8
least 1F ceramic capacitor.
The output of the regulator. Bypass to ground through
OUT 1 5 3 2 3 2 1 at least 2.2F ceramic capacitor. For improved ac load
response a larger capacitor is recommended.
GND 4 2 2 1 2 1 4 Ground
Adjustable voltage version only a resistor divider from
ADJ 3 3 NA NA NA NA NA this pin to the OUT pin and ground sets the output
voltage.
EN 5 1 NA NA NA NA 2 Enable input, active high
NC 2, 6, 7 NA NA NA NA NA 3, 5, 6, 7 No connection
2 of 22
AP7361 March 2017
Diodes Incorporated
www.diodes.com
Document number: DS33626 Rev. 11 - 3