AP138 Datasheet, PDF (1/7 Pages) Anachip Corp – 300mA Low-Noise CMOS LDO

300mA Low-Noise CMOS LDO
„ Features
- Very low dropout voltage
- Low current consumption: Typ.30µA, Max. 35µA
- Output voltage: 1.8V, 2.5V, 2.8V, 3.0V and 3.3V
- High accuracy output voltage: ±1.5%
- Guaranteed 300mA output
- Input range up to 7.0V
- Thermal shutdown
- Current limiting
- Stability with low ESR capacitors
- Factory pre-set output voltages
- Low temperature coefficient
- Pb-free package: SOT23-5L
„ Applications
- Battery-powered devices
- Personal communication devices
- Home electric/electronic appliances
- PC peripherals
AP138
„ General Descriptions
The AP138 is a positive voltage linear regulator
utilizing CMOS technology. The features that
include low quiescent current (30µA typ.), low
dropout voltage, and high output voltage accuracy,
make it ideal for battery applications. EN input
connected to CMOS has low bias current. The
space-saving SOT23-5L package is attractive for
“Pocket” and “Hand Held” applications.
This rugged device has both thermal shutdown, and
current limit protections to prevent device failure
under the “Worst” operating conditions.
In a low noise, regulated supply application, a
1000pF capacitor is necessary to be placed in
between Bypass and Ground.
The AP138 is stable with a low ESR output
capacitor of 1.0µF or greater.
„ Pin Assignments
(Top View)
V_OUT
5
BYP
4
AP138
1
2
3
V_IN GND EN
SOT23-5
„ Pin Descriptions
Pin Pin
Name No.
Function
V_IN
1 Power Supply
GND 2 Ground
EN
3 Enable Pin
BYP 4 Bypass Signal Pin
V_OUT
5 Output
„ Ordering Information
AP138 XX X X
Output voltage
18: 1.8V
25: 2.5V
28: 2.8V
30: 3.0V
33: 3.3V
Package
W : SOT23-5L
Packing
Blank: Tube
A: Taping
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. 1.0 Oct 29, 2004
1/7