The APW7008 is a high efficiency charge pump white LED driver; the device drives up four white LEDs with regulated constant current for uniform intensity.

FeaturesVpi嘉泰姆

±1.5% LED Current MatchingVpi嘉泰姆

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

DischargeVpi嘉泰姆

Output Current Up to 30mA per LEDVpi嘉泰姆

2.7V to 5.5V Operating VoltageVpi嘉泰姆

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

1x/1.5x/2x Charge Pump ModesVpi嘉泰姆

Low Shutdown Current: 2µA MaximumVpi嘉泰姆

Low Input Ripple and EMIVpi嘉泰姆

Internal Soft-Start Limits Inrush CurrentVpi嘉泰姆

Short Circuit Current-LimitVpi嘉泰姆

Thermal Shutdown ProtectionVpi嘉泰姆

Output Over-Voltage ProtectionVpi嘉泰姆

3mmx3mm 16-Pin QFN (QFN3X3-16) PackageVpi嘉泰姆

Lead Free and Green Devices AvailableVpi嘉泰姆

(RoHS Compliant)Vpi嘉泰姆

Vpi嘉泰姆

General DescriptionVpi嘉泰姆

The APW7008 is a high efficiency charge pump whiteVpi嘉泰姆

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

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

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

a Li-ion battery application. The APW7008 operates in 1x,Vpi嘉泰姆

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

switches the charge pump modes depend on the inputVpi嘉泰姆

voltage to maintain the required power for high powerVpi嘉泰姆

efficiency. The APW7008 provides up to 30mA per LEDVpi嘉泰姆

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

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

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

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

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

with 2µA quiescent current. The APW7008 switches atVpi嘉泰姆

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

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

ripple and EMI.Vpi嘉泰姆

The APW7008 is available in a 16-pin QFN package.Vpi嘉泰姆

Vpi嘉泰姆

 Vpi嘉泰姆

Vpi嘉泰姆