AAT1202 datasheet(4/18 Pages) AAT

No de pièce	AAT1202

Description	250-mA MULTI-INPUT LOW-DROPOUT REGULATOR WITH DUAL -OUTPUT POWER MANAGEMENT

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Fabricant	AAT [Advanced Analog Technology, Inc.]

Site Internet	http://www.aatech.com.tw

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Advanced Analog Technology, Inc.

–

台灣類比科技股份有限公司 –

Advanced Analog Technology, Inc.

V 0.1

AAT1202

Electrical Characteristics over recommended operating free-air temperature, TA = 0℃ to

70℃,CL = 4.7µF (unless otherwise noted)

Parameter

Test Condition

Min

Typ

Max Unit

VCC50

5-V inputs

VSB50

4.5

5

5.5

V

OUT33

3.3-V output

Iout33+Iout18 = 250mA

3.135

3.3

3.465

V

OUT18

1.8-V output

Iout33=0, Iout18 = 200mA

1.71

1.8

1.89

V

△

VO（△VI） Line regulation voltage

VSB50 or VCC50 = 4.5V to 5.5V

2

mV

△

VO（△IO） Load regulation voltage

20 mA＜IL＜250 mA

40

mV

I50

Quiescent supply current

From VCC50 VSB50 terminals, IL=

0 to 250mA

1.0

3.0

mA

IAUX

From AUX33 terminal, IL = 0A

1.0

3.0

mA

IL33

Out33 load current

0.25

IL18

Out18 load current

0.2

ILIMIT

Output current limit

Out33 or Out18 output shorted to

0V

1.5

A

TTSD

Thermal shutdown（NOTE 2）

150

180

Thys

Thermal hysteresis（NOTE 2）

15

℃

CL

Load capacitance

Minimal ESR to insure stability of

regulated output

4.7

µF

IIkg（REV）

Reverse leakage output current Tested for input that is grounded.

AUX33, VSB50 or VCC50 = GND,

Out33 = 3.3v

50

µA

VLO

Threshold voltage, low

VSB50 or VCC50↓

3.85

4.05

4.25

V

VHI

Threshold voltage, high

VSB50 or VCC50↑

4.1

4.3

4.5

V

R（SWITCH） Auxiliary switch resistance

VSB50 = VCC50 = 0V,

AUX33 = 3.3V, IL = 150mA

0.4

Ω

Without copper for heat spreading

100

RθJA

Thermal impedance,

Junction-to-ambient（NOTE3） With copper for heat spreading

70

℃

/W

NOTE 2：Design targets only. Not tested in production.

NOTE 3：Please refer to "Thermal Information"

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