AAT1265_07 datasheet(4/13 Pages) ANALOGICTECH

Part #	AAT1265

Description	Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package

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Manufacturer	ANALOGICTECH [Advanced Analogic Technologies]

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AAT1265

Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package

SwitchRegTM

PRODUCT DATASHEET

4

1265.2007.12.1.4

www .analogictech.com

AAT1265

Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package

SwitchRegTM

PRODUCT DATASHEET

4

1265.2007.12.1.4

www .analogictech.com

Electrical Characteristics1

VIN = 1.2V, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.

Symbol Description

Conditions

Min

Typ

Max

Units

VIN

Minimum Start-Up Voltage

ILOAD = 1mA

1.0

V

Operating Input Voltage Range

0.8

VOUT

Output Voltage Accuracy

VIN = 0.8V to 2.5V, PWM Mode

VOUT - 0.1

VOUT + 0.1

V

VIN = 2.5V to 4.2V, PWM Mode;

5.0V Version Only

VOUT - 0.15

VOUT + 0.15

V

IQ

Quiescent Supply Current (Light Load

Operation)2

No Load

40

70

μA

ISHDN

Shutdown Current

EN = 0V, VIN = 5.5V

1.0

μA

RDS(ON)H

PMOS On-Resistance

TA = 25°C

750

mΩ

RDS(ON)L

NMOS On-Resistance

TA = 25°C

400

mΩ

ILIMIT

NMOS Current Limit

1.0

A

IPFM

PFM Light Load Current Threshold

20

mA

η

Efﬁciency

IOUT = 50mA, L = 2.2μH82

%

ΔVOUT/

VOUT

Load Regulation

ILOAD = 0 to 100mA

1.5

%

ΔVOUT/

VOUT/ΔVIN

Line Regulation

VIN = 0.8V to 2.5V

0.2

%/V

VIN = 2.5V to 4.2V; 5.0V Version

Only

0.16

FOSC

Switching Frequency

TA = 25°C

1.8

2.0

2.2

MHz

DTYMAX

Maximum Duty Cycle

90

%

VTH(L-IN)

Logic Input Low Threshold for EN

0.4

V

VTH(H-IN)

Logic Input High Threshold for EN

1.0

V

1. The AAT1265 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-

tion with statistical process controls.

2. IQ = IQ_VOUT + IQ_VCC.

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