AAT3143ITP-T1 View Datasheet(PDF) - Advanced Analogic Technologies

Part Name

Description

MFG CO.

AAT3143ITP-T1

High Efficiency 1X/1.5X/2X Charge Pump with PWM Control for White LED Applications

Advanced Analogic Technologies 

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PRODUCT DATASHEET

AAT3143

ChargePumpM High Efficiency 1X/1.5X/2X Charge Pump with PWM Control for White LED Applications

Electrical Characteristics1

CIN = CCP = C1 = C2 = 1.0µF; TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C,

VIN = 3.5V.

Symbol Description

Input Power Supply

VIN

Operation Range

ICC

Operating Current

ISHDN

IDX

I(D-Match)

Shutdown Current

Output Current Accuracy

Current Matching2

hCP

Charge Pump Efficiency

Charge Pump Section

FCLK

Clock Frequency

EN/PWM

VEN(L)

Enable Threshold Low

VEN(H)

FPWM

Enable Threshold High

Maximum PWM Frequency

tON(MIN)

Minimum Pulse Width

Conditions

VD1:D4 = 2.0V, CP = 1X

No Load Current, CP = 1.5X

EN/PWM = 0

IOUT = 20mA, TA = 25°C, VIN = 3.5V

VD1:D4 = 3.6V, VIN = 3.5V

VIN = 3.5V, IOUT(TOTAL) = 80mA, Measured

from IN to CP

Min Typ Max

2.7

5.5

0.55

3

5

1

18

20

22

-3 ±0.5

3

93

Units

V

mA

µA

mA

%

%

1000

kHz

0.4

V

1.4

V

50

kHz

2

µs

1. The AAT3143 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. Current matching is defined as I(D-Match) = (ID - IAVE)/IAVE.

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3143.2009.06.1.1

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