The APW8802,APW8804,APW8805,APW8807 is equipped with accurate current-limit, output under-voltage, and output over-voltage protections, perfect for NB applications

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FeaturesCXr嘉泰姆

Operates from An Input Battery Voltage Range ofCXr嘉泰姆

+3V to +25VCXr嘉泰姆

±1.6% 0.75V ReferenceCXr嘉泰姆

- Over Line, Load Regulation, and Operating Temp.CXr嘉泰姆

High Efficiency all Over 90% at VOUT=1V, VIN=19VCXr嘉泰姆

ConditionCXr嘉泰姆

Power-On-Reset Monitoring on PVCC and VCC PinsCXr嘉泰姆

Excellent Line and Load Transient ResponsesCXr嘉泰姆

Integrated 12mΩ @ VCC=5V N-Channel MOSFETCXr嘉泰姆

For High SideCXr嘉泰姆

Integrated 12mΩ @ VCC=5V N-Channel MOSFETCXr嘉泰姆

For Low SideCXr嘉泰姆

Programmable PWM Frequency from 100kHz toCXr嘉泰姆

500kHzCXr嘉泰姆

Built-in 1.2ms Digital Soft-Start & Soft-StopCXr嘉泰姆

Built-in COT Mode Control for Fast Response andCXr嘉泰姆

MLCC SupportsCXr嘉泰姆

Power Good MonitoringCXr嘉泰姆

70% Under-Voltage ProtectionCXr嘉泰姆

125% Over-Voltage ProtectionCXr嘉泰姆

Adjustable Current-Limit ProtectionCXr嘉泰姆

- Using Built-in Low-Side MOSFET’s RDS(ON)CXr嘉泰姆

Over-Temperature ProtectionCXr嘉泰姆

TQFN5x6-28 (Power PAK) PackageCXr嘉泰姆

Lead Free and Green Devices AvailableCXr嘉泰姆

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General Description
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The APW8802 is a 8A, synchronous, step-down converterCXr嘉泰姆

with integrated 12mΩ N-channel High-Side MOSFET andCXr嘉泰姆

12mΩ Low-Side MOSFET. The APW8802 steps downCXr嘉泰姆

high voltage to generate low-voltage chipset or RAM sup-CXr嘉泰姆

plies in notebook computers.CXr嘉泰姆

The APW8802 provides excellent transient response andCXr嘉泰姆

accurate DC voltage output in either PFM or PWM Mode.CXr嘉泰姆

In Pulse Frequency Mode (PFM), the APW8802 providesCXr嘉泰姆

very high efficiency over light to heavy loads with loading-CXr嘉泰姆

modulated switching frequencies. In PWM Mode, the con-CXr嘉泰姆

verter works nearly at constant frequency for low-noiseCXr嘉泰姆

requirements.CXr嘉泰姆

The APW8802 is equipped with accurate current-limit,CXr嘉泰姆

output under-voltage, and output over-voltage protections,CXr嘉泰姆

perfect for NB applications. A Power-On-Reset functionCXr嘉泰姆

monitors the voltage on VPVCC and VCC to prevent wrongCXr嘉泰姆

operation during power-on. The APW8802 has a 1.2msCXr嘉泰姆

digital soft-start and built-in an integrated output dischargeCXr嘉泰姆

device for soft-stop. An internal integrated soft-start rampsCXr嘉泰姆

up the output voltage with programmable slew rate toCXr嘉泰姆

reduce the start-up current. A soft-stop function activelyCXr嘉泰姆

discharges the output capacitors.CXr嘉泰姆

The APW8802 is available in TQFN5x6-28 (Power PAK)CXr嘉泰姆

package.CXr嘉泰姆

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