APW7070A SOP8 original

APW7070A SOP8

original

Wide Input Voltage from 4.75V to 20V
· Output Current up to 3A
· Adjustable Output Voltage from 0.8V to 90%VIN
- 0.8V Reference Voltage
- ±2.5% System Accuracy
· 80mW Integrated MOSFETs
· High Efficiency up to 93%
· Current-Mode Operation
- Stable with Ceramic Output Capacitors
- Fast Transient Response
· Power-On-Reset Monitoring
· Fixed 380kHz Switching Frequency in PWM Mode
· Automatic Pulse-Skipping Mode (PSM)/PWM
Mode Operation (APW7070A)
· Forced-PWM Operation (APW7070)
· Built-in Digital Soft-Start
· Output Current-Limit Protection with Frequency
Foldback
· 70% Under-Voltage Protection
· Over-Temperature Protection
· 118% Over-Voltage Protection
· <5mA Quiescent Current during Shutdown
· Thermal-Enhanced SOP-8P Package
· Pb-Free Available as an Option
· Lead Free and Green Devices Available
(RoHS Compliant)

Applications
General Description
The APW7070/A is a 3A, synchronous, step-down converter with integrated 80mW MOSFETs. The device, with
current-mode control scheme, can convert 4.75~20V input voltage to the output voltage adjustable from 0.8 to
90% VIN
to provide excellent output voltage regulation.
The APW7070A regulates the output voltage in an automatic PSM/PWM mode operation, depending on the output current, for high efficiency operation over light to full
load current. The APW7070 always works in a ForcedPWM mode with constant frequency over full output current range for low-noise requirements.The APW7070/A
is also equipped with power-on-reset, soft-start and whole
protections (including over-voltage, under-voltage, overtemperature and current-limit) in a single package. In shutdown mode, the supply current drops below 5mA.
This device, available in an 8-pin SOP-8P package, provides a very compact system solution with minimal external components and good thermal conductance.
· LCD Monitor / TV
· SetTop Box
· Portable DVD
· Wireless LAN
· ADSL, Switch HUB
· Notebook Computer
· Step-Down Converters Requiring High Efficiency
and 3A Output Current