AAT2846 datasheet(5/22 Pages) ANALOGICTECH

Part #	AAT2846

Description	High Current Charge Pump with Dual LDO for Backlight and Flash Applications

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Manufacturer	ANALOGICTECH [Advanced Analogic Technologies]

Direct Link	http://www.analogictech.com

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AAT2846

High Current Charge Pump with Dual LDO for Backlight and Flash Applications

ChargePump

TM

PRODUCT DATASHEET

2846.2008.03.1.1

5

www .analogictech.com

AAT2846

High Current Charge Pump with Dual LDO for Backlight and Flash Applications

ChargePump

TM

PRODUCT DATASHEET

2846.2008.03.1.1

5

www .analogictech.com

Electrical Characteristics1

VIN = 3.6V; CIN = 4.7µF; COUT = 2.2µF; C1 = C2 = 1µF; RFSET = 280kΩ; TA = -40°C to +85°C, unless otherwise noted.

Typical values are TA = 25°C.

Symbol Description

Conditions

Min

Typ

Max

Units

Linear Regulators

VFBA, VFBB

Feedback Voltage Tolerance

IOUT = 1mA to 200mA

1.17

1.2

1.23

V

ENA = ENB = IN, ENS = AGND

200

IOUTA(MAX),

IOUTB(MAX)

OUTA, OUTB Maximum Load Current

200

mA

VOUTA(DO),

VOUTB(DO)

OUTA, OUTB Dropout Voltage

IOUT = 150mA

150

300

mV

PSRRA,

PSRRB

OUTA, OUTB Power Supply Rejection Ratio

IOUT = 10mA, CREF = 10nF, 1kHz

50

dB

VEN_(L)

ENA, ENB Voltage Low Threshold

0.4

V

VEN_(H)

ENA, ENB Voltage High Threshold

1.4

V

tEN_(DLY)

ENA, ENB Enable Delay

REF = Open

15

µs

1. The AAT2846 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.

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