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AP138

Anachip
Part Number AP138
Manufacturer Anachip
Description 300mA Low Noise CMOS LDO
Published Sep 16, 2005
Detailed Description AP138 300mA Low-Noise CMOS LDO „ Features - Very low dropout voltage - Low current consumption: Typ.30µA, Max. 35µA - Ou...
Datasheet PDF File AP138 PDF File

AP138
AP138

Overview
AP138 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 „ 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.
„ Applications - Battery-powered devices - Personal communication devices - Home electric/electronic appliances - PC peripherals „ Pin Assignments (Top View) VOUT BYP 5 4 „ Pin Descriptions Pin Name VIN GND EN BYP VOUT Pin No.
1 2 3 4 5 Function Power Supply Ground Enable Pin Bypass Signal Pin Output AP138 1 2 3 VIN GND EN SOT23-5 „ 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 AP138 300mA Low-Noise CMOS LDO „ Block Diagram VIN VOUT Curren...


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