Technology Corporation
ATLR01 LDO REGULATOR
Data Sheet
Release Date: Jan. 2005
Revision: 1.8
Technology Corporation
ATLR01 V1.8 Low Dropout Regulator Revision History
Version Date
1.0 March/11/2003
Changes from Last Version
1.1 May/10/2003 Change VLNR Range to Max 0.6 %/V 1.2 Sep./24/2003 1. Correct VPG Condition
2. Add a Condition in PG VOL
1.3 Sep./25/2003 Delete fault condition in PG VOL 1.4 Jan/08/2004 1.5 Jan/15/2004 1.6 Jan/28/2004 1.7 Nov/03/2004 1.8 Jan/07/2005 Remove “Thermal Shutdown” function support. Change VPG delay time to 2ms. Change ”Operation Ratings”
Change Vin range in ”Operation Ratings”
Add “Green” device ordering information in page 2
Technology CorporationATLR01 V1.8 Low Dropout Regulator
Table of Contents
1. General Description………………………………………………………………………. 2. Features……………………………………………………………………………………. 3. Pin Configuration…………………………………………………………………………. 4. Pin Description……………………………………………………………………………. 5. Quick Reference Data………..………………………………………………………….. 6. Package Information………………………………………………………………………
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Technology Corporation
ATLR01 V1.8 Low Dropout Regulator
Figures
Figures 1. ATLR01 Pin Diagram (Top View)……..………………………………………… 2
Page
Tables
Table 1. ATLR01 Pin Description.……………………………………….………………………… 3
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Technology Corporation
1. General Description
ATLR01 V1.8 Low Dropout Regulator The ATLR01 is an efficient CMOS voltage regulator designed for applications requiring low dropout performance. This part can be available in fixed output voltages of 1.2V voltage. Typical ground current is approximately 100µA, form zero to maximum loading conditions.
The ATLR01 provides built-in output current-limiting, a push-pull output for faster
transient response, and an active clamp to speed up device turnoff. The ATLR01 is available in a 5-pin SOT-25 package.
2. Features
150 mA output current Current limiting
Power Good indicator
Fast transient response
Tight load and line regulation Stability with low-ESR capacitors TTL-logic-controlled enable input
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Specification Subject to Change without Notice.
Technology Corporation
ATLR01 V1.8 Low Dropout Regulator 3. Pin Configuration
EN
3
GND
2
VIN
1
ATLR01
4
5
PG
VOUT
Figure 1. ATLR01 Pin Diagram (Top View)
Ordering Information
ATLR01- Commercial Standard
ATLR01G- Green Device with Commercial Standard
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Specification Subject to Change without Notice.
Technology Corporation4. Pin Description
IN --- Input pin OUT --- Output pin
ATLR01 V1.8 Low Dropout Regulator I/O TYPE DESCRIPTION
Pin No.
2
Pin name
GND
I/O Type
Ground
Function
1 VIN I Supply Input
3 EN 4 PG I Enable/Shutdown O Power Good
5 VOUT O Output
Table 1. ATLR01 Pin Description
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Specification Subject to Change without Notice.
Technology Corporation
ATLR01 V1.8 Low Dropout Regulator Absolute Maximum Ratings (Note 1) Operating Ratings (Note 2)
Supply Input Voltage (VIN)………….…0V to +7VInput Voltage (VIN)…………....……+2.8 to +6V Enable Input Voltage (VEN)……………..0V to VINEnable Input Voltage (VEN)……………. 0V to VINFlag Output Voltage (VPG)……..…….…0V to VINFlag Output Voltage (VPG)……….…..…0V to VINJunction Temperature (TJ)……………….+150Junction Temperature(TJ)…..…-30 to +150Storage Temperature……….....-65 to +150Thermal Resistance
Lead Temperature (soldering. 5sec.)….....260SOT-25(JA)………………….………….235/wESD. Note 3
Electrical Characteristics
VIN=3.0V, VEN=VIN; IOUT=100A; TJ=25, bold values indicate -30 TJ+125; unless noted.
Typical MaxUnitsSymbol Parameter Conditions Min -3 3 %
IOUT = 100A Vo Output Voltage Accuracy
% -5 5
VIN= 2.8V to 6V 0.6 %/VVLNR Line Regulation
IOUT = 0.1mA to 150mA, Note 4 3.5 4 % VLDR Load Regulation
ILIM Current Limit VOUT=0V 160 350 mAENABLE INPUT
Enable Input Logic-Low Voltage VIN=5.5V, regulator shutdown VIL
Enable Input Logic-High Voltage VIN=5.5V, regulator enabled VIH
IEN Enable Input Current VIL0.4V; VIN=5.5V
VIH1.6V; VIN=5.5V POWER GOOD, NOTE 6
Low Threshold VPG VOL
IPG
V 0.4
V 1.6
0.01 A 0.01 A
85 %
High Threshold 90 % PG Output Logic-Low Voltage IL=2mA, VIN=3.3V 0.15V Power Good Leakage Current power good off, VPG=5.5V 1 A
% of VOUT(PG OFF)
% of VOUT(PG ON)
Note1. Exceeding the absolute maximum rating may damage the device. Note2. The device is not guaranteed to function outside its operating rating. Note3. Devices are ESD Sensitive. Handling precautions recommended.
Note4. Regulation is measured at constant junction temperature using low duty cycle pulse testing.
Parts are tested for load regulation in the load range from 0.1mA to 150mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification
Note5. Ground pin current is the regulator quiescent current. The total current drawn from the
supply is the sum of the load current plus the ground pin current. Note6. The power good is a function of the output voltage being 5% low and the detection of one of
the following: over-current, over-temperature or dropout. See “applications Information” section for additional information.
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Specification Subject to Change without Notice.
Technology Corporation5. Timing Diagram
ATLR01 V1.8 Low Dropout Regulator
5
Specification Subject to Change without Notice.
Technology CorporationATLR01 V1.8 Low Dropout Regulator 6. Package Information
SOT 25 Outline Dimension
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Specification Subject to Change without Notice.
Technology Corporation
ATLR01 V1.8 Low Dropout Regulator Copyright © 2004 Attansic Technology Corp.
The materials contained in this document replace all previous documentation issued for the related products included herein. Please contact Attansic Technology Corp. for the latest documents.
Attansic is the trademark of Attansic Technology Corp.
All specifications are subject to change without notice.
Additional copies of this document or other Attansic literatures may be obtained from:
3FL., No. 147, Hsien Cheng 9th Rd, Chu-Pei, Hsin-Chu Hsien, Taiwan
Tel: 886-3-5545660 Fax: 886-3-5545661
To find out more about Attansic, visit our World Wide Web address at:
http://www.attansic.com.tw/
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Specification Subject to Change without Notice.
