AAT2120IES-0.6-T1 datasheet(4/19 Pages) ANALOGICTECH

Part #	AAT2120IES-0.6-T1

Description	500mA Low Noise Step-Down Converter

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Manufacturer	ANALOGICTECH [Advanced Analogic Technologies]

Direct Link	http://www.analogictech.com

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AAT2120

500mA Low Noise Step-Down Converter

SwitchRegTM

PRODUCT DATASHEET

4

2120.2008.02.1.2

www .analogictech.com

AAT2120

500mA Low Noise Step-Down Converter

SwitchRegTM

PRODUCT DATASHEET

4

2120.2008.02.1.2

www .analogictech.com

Electrical Characteristics1

VIN = 3.6V, TA = -40°C to +85°C, unless otherwise noted; typical values are TA = 25°C.

Symbol

Description

Conditions

Min

Typ

Max

Units

VIN

Input Voltage

2.7

5.5

V

VUVLO

UVLO Threshold

VIN Rising

2.3

V

Hysteresis

70

mV

VIN Falling

1.4

V

VOUT

Output Voltage Tolerance2

IOUT = 0 to 500mA, VIN = 2.7V to 5.5V

-3.0

3.0

%

VOUT

Output Voltage Range

0.6

VIN

V

IQ

Quiescent Current

No Load

45

85

μA

ISHDN

Shutdown Current

EN = GND

1.0

μA

ILIM

P-Channel Current Limit

700

mA

RDS(ON)H

High-Side Switch On Resistance

0.59

Ω

RDS(ON)L

Low-Side Switch On Resistance

0.42

Ω

ΔVLinereg/ΔVIN Line Regulation

VIN = 2.7V to 5.5V

0.2

%/V

VFB

Feedback Threshold Voltage Accuracy

VIN = 3.6V

0.591 0.600 0.609

V

IFB

FB Leakage Current

VOUT = 1.0V

0.2

μA

FOSC

Oscillator Frequency

1.8

MHz

TS

Startup Time

From Enable to Output Regulation

100

μs

TSD

Over-Temperature Shutdown Threshold

105

°C

THYS

Over-Temperature Shutdown Hysteresis

15

°C

VEN(L)

Enable Threshold Low

0.6

V

VEN(H)

Enable Threshold High

1.4

V

IEN

Input Low Current

VIN = VEN = 5.5V

-1.0

1.0

μA

1. The AAT2120 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. Output voltage tolerance is independent of feedback resistor network accuracy.

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