The APW7000/APW7001 is a high efficiency charge pump white LED driver; the device drives up to four white LEDs with regulated constant current for uniform intensity.

FeaturesMEX嘉泰姆

±1.5% LED Current MatchingMEX嘉泰姆

High Efficiency Up to 90% Over Li-ion BatteryMEX嘉泰姆

DischargeMEX嘉泰姆

Output Current Up to 30mA Per LEDMEX嘉泰姆

2.7V to 5.5V Operating VoltageMEX嘉泰姆

Allow to Turn On or Off a Combination of LEDsMEX嘉泰姆

1x/1.5x/2x Charge Pump ModesMEX嘉泰姆

Low Shutdown Current: 2µA MaximumMEX嘉泰姆

Low Input Ripple and EMIMEX嘉泰姆

Internal Soft-Start Limits Inrush CurrentMEX嘉泰姆

Short Circuit Current LimitMEX嘉泰姆

Thermal Shutdown ProtectionMEX嘉泰姆

Output Over-Voltage ProtectionMEX嘉泰姆

16-Pin QFN PackageMEX嘉泰姆

Lead Free and Green Devices AvailableMEX嘉泰姆

(RoHS Compliant)MEX嘉泰姆

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General DescriptionMEX嘉泰姆

The APW7000 is a high efficiency charge pump whiteMEX嘉泰姆

LED driver; the device drives up to four white LEDs withMEX嘉泰姆

regulated constant current for uniform intensity. The sup-MEX嘉泰姆

ply voltage ranges from 2.7V to 5.5V and it is optimized forMEX嘉泰姆

a Li-ion battery application. The APW7000 operates in 1x,MEX嘉泰姆

1.5x, and 2x charge pump modes and automaticallyMEX嘉泰姆

switches the charge pump modes depend on the inputMEX嘉泰姆

voltage to maintain the required power for high powerMEX嘉泰姆

efficiency. The APW7000 provides up to 30mA per LED,MEX嘉泰姆

for a total of 120mA and allows several methods such asMEX嘉泰姆

a PWM signal on the CTRL0 pin for LED dimming. ThreeMEX嘉泰姆

control logic pins allow to disable or enable a combina-MEX嘉泰姆

tion of LEDs. The supply current is only 2mA in 2x mode,MEX嘉泰姆

and the EN pin allows the device to enter shutdown modeMEX嘉泰姆

with 2µA quiescent current. The APW7000 switches atMEX嘉泰姆

1MHz frequency and only requires four 1µF ceramic ca-MEX嘉泰姆

pacitors and one resistor, and ensures low input currentMEX嘉泰姆

ripple and EMI.MEX嘉泰姆

The APW7000 is available in a 16-pin QFN package.MEX嘉泰姆

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