AP7335
300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT
LOW DROPOUT LINEAR REGULATOR
Description Pin Assignments
The AP7335 is a 300mA, adjustable and fixed output
(Top View)
(Top View)
voltage, low dropout linear regulator. The device included
pass element, error amplifier, band-gap, current limit and
IN 1 5 OUT
IN 1 5 OUT
thermal shutdown circuitry. The device is turned on when
EN pin is set to logic high level.
2
2 GND
GND
The characteristics of low dropout voltage and low quiescent
EN 3 4 ADJ
EN 3 4 NC
current make it suitable for low power applications, for
example, battery powered devices. The typical quiescent SOT25
SOT25
(Fixed Output)
(ADJ Output)
current is approximately 35 A. Built-in current-limit and
thermal-shutdown functions prevent IC from damage in fault
conditions.
(Top View)
(Top View)
EN NC
1 6
This device is available with adjustable output from 0.8V to
EN ADJ
1 6
5.0V, and fixed version with 0.8V, 1.0V, 1.2V, 1.5V, 1.8V,
NC
2 5
GND
2 5 NC
GND
2.0V, 2.5V, 2.7V, 2.8V, 3.0V, 3.3V and 3.9V outputs. Please
contact your local sales office for any other voltage options.
OUT
IN 3 4
IN 3 4 OUT
The AP7335 is available in SOT25 and DFN2020-6 DFN2020-6
DFN2020-6
(Fixed Output)
packages.
(ADJ Output)
Applications
Features
Smart Phones
300mA Low Dropout Regulator with EN
MP3/MP4
Very low I : 35A
Q
Battery-powered devices
Wide input voltage range: 2V to 6V
Bluetooth headset
Wide adjustable output: 0.8V to 5.0V
Fixed output options: 0.8V to 3.9V (0.1V step size
possible)
High PSRR: 65dB at 1kHz
Fast start-up time: 220s
Stable with low ESR, 1F ceramic output capacitor
Excellent Load/Line Transient Response
Low dropout: 150mV at 300mA
Current limit and short circuit protection
Thermal shutdown protection
Ambient temperature range: -40C to 85C
SOT25, and DFN2020-6: Available in Green Molding
Compound (No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
Note: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
AP7335
300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT
LOW DROPOUT LINEAR REGULATOR
Typical Application Circuit
V V
IN V IN V
OUT OUT
IN OUT IN
OUT
AP7335
AP7335
R1
1uF 1uF 1uF
1uF
Enable Enable
EN ADJ
EN
GND
GND
R2
Adjustable Output Fixed Output
R
1
V = V 1 + where R 80K
OUT REF 2
R
2
Pin Descriptions
Pin Number
Pin
SOT25 SOT25 DFN2020-6 Description
DFN2020-6
Name
(fixed)
(fixed) (adj) (adj)
Voltage input pin. Bypass to ground through at least 1F
IN 1 1 3 3
MLCC capacitor
GND 2 2 2 2 Ground
EN 3 3 1 1 Enable input, active high
ADJ - 4 - 6 Output feedback pin
NC 4 - 5, 6 5 No connection
Voltage output pin. Bypass to ground through 1F MLCC
OUT 5 5 4 4
capacitor
2 of 16 December 2011
AP7335
Diodes Incorporated
www.diodes.com
Document number: DS32259 Rev. 3 - 2
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