AAT3141ITP-T1 View Datasheet(PDF) - Advanced Analogic Technologies

Part Name

Description

MFG CO.

AAT3141ITP-T1

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

Advanced Analogic Technologies 

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AAT3141

High Efficiency 1X/1.5X/2X Charge Pump

for White LED Applications

cost Y5V and Z5U dielectrics, but capacitors greater

than 1µF are typically not required for AAT3141

applications.

Capacitor area is another contributor to ESR.

Capacitors that are physically large will have a lower

ESR when compared to an equivalent material

smaller capacitor. These larger devices can improve

circuit transient response when compared to an

equal value capacitor in a smaller package size.

Thermal Protection

The AAT3141 has a thermal protection circuit that will

shut down the charge pump if the die temperature

rises above the thermal limit as is the case during a

short circuit of the CP pin.

Charge Pump Compatibility

The 4-output AAT3141 is pin-compatible with the

AAT3123, AAT3132, and AAT3113 in TSOPJW-12

packages. The AAT3141 offers an improved overall

efficiency, wider operating range, and the ability to

drive high-VF type LEDs at full current. The AAT3141

is well suited for battery powered applications using

single-cell lithium-ion (Li-Ion) batteries (4.2V to

2.8V), lithium polymer batteries, and 3-series con-

nected dry cells (3.6V).

3141.2004.07.0.91

15

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