Aimtron AT1202X Schematic [ru]

AT1202

Preliminary Product Information

High Voltage Linear Regulator

Features

• ±2% Output Accuracy

• 12µA Quiescent Current

• Shutdown Current <1µA

• High Output Voltage: Up to 28V

• 30mA Output Current

• Tiny SOT-25 Package

Applications

• Microcontroller Power

• Notebook Computers

• Battery Operating system

Block Diagram

General Description

The AT1202 is high voltage, micropower linear
regulator. Key feature include wide input voltage,
low-noise, low-dropout and low-quiescent-current.
The output voltage precision is within ±2﹪and

output currents of up to 30mA.

Aimtron reserves the right without notice to change this circuitry and specifications.

7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone] Fax: [phone] WWW: http://www.aimtron.com.tw
2/8/2006 REV:1.1 Email: [e-mail]

1

AT1202

Preliminary Product Information

High Voltage Linear Regulator

Pin Assignment

Ordering Information

Part number Package Marking

AT1202X SOT-25 Date Code

AT1202X_GRE SOT-25, Green

,Date Code with one bottom line

: Date Code

*

For more marking information, contact our sales representative directly

Pin Description

Pin No. Symbol I/O Description

1 VIN P Power Supply
2 GND P Ground
3 OUT O Regulator Output
4 FB I Feedback Input
5 /SHDN I Shutdown input, active low.

Absolute Maximum Ratings

Item Symbol Ratings Units

Storage temperature T

Operating temperature T

VIN

/SHDN,FB

OUT

Power consumption Pd*1 570 mW

*1. Continuous Power Dissipation derate 7.1mW/℃ above +70℃

STG

OPR

-55〜＋150 ℃

-30〜＋85 ℃

-0.3〜+30

-0.3〜＋(VIN+0.3)

-0.3V〜+30

V
V
V

7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone] Fax: [phone] WWW: http://www.aimtron.com.tw
2/8/2006 REV:1.1 Email: [e-mail]

2

AT1202

Preliminary Product Information

High Voltage Linear Regulator

Electrical Characteristics

(V

=15V, /SHDN = VIN, I

IN

Parameter Symbol Condition

Input Voltage VIN 4 - 28 V

LOAD

=5µA, Ta=T

MIN

to T

,unless otherwise note. Typical Ta =250C)

MAX

Va lu es

Min. Typ. Max.

Unit

μA

μA

μA

μA

Supply Current I

Shutdown Supply Current I

IN

IN1

Feedback Reference VFB

/SHDN=VIN, Ta =250C - 12 15

/SHDN=VIN,VIN=6~28V,
Ta=T

MIN

to T

MAX

- - 20

/SHDN=GND, Ta =250C - - 3

/SHDN=GND, Ta=T
T

MAX
FB=OUT, Ta =250C
VIN=6V to 28V,I

LOAD

MIN

=1mA

to

- - 5

1.215 1.240 1.265 V

FB=OUT, VIN=6V to 28V,
Ta=T

I

LOAD

to T

MIN

=5μA to 30mA

MAX

1.18 - 1.28 V

Feedback Input Current IFB VFB =1.3V -10 12 30 nA

Dropout Voltage

∆VDO

I

LOAD

- - 350 mV

=30mA

Output Current Limit VIN=6 - 100 - mA

OUT Reverse Leakage
Current
Capacitive Load
Requirement

Start-Up Time Response

Start-Up overshoot

VIN=unconnected, OUT set
to 5V

- 80 -

0.33 - -

RL =500Ω,OUT set to 5V
C

=10μF

OUT

R

=500Ω,C

L

=10μF

OUT

OUT set to 5V with 90%

- - 2 ms

- 0.5 - %OUT

μA

μF/mA

output

/SHDN Input Current I

/SHDN Input Level

/SHDN=0 or 15V -1 - 1

/SHDN

V

IH

VIL

1.4

-

-

-

-

0.25

μA

V
V

7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone] Fax: [phone] WWW: http://www.aimtron.com.tw
2/8/2006 REV:1.1 Email: [e-mail]

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