MP8792中文资料美国芯源数据手册PDF规格书

DESCRIPTION

The MP8792 is a fully integrated, highfrequency,

synchronous buck converter. It

offers a compact solution to achieve up to 12A

of output current over a wide input supply range

with excellent load and line regulation. The

MP8792 operates at high efficiency over a wide

output current load range.

The MP8792 adopts internally compensated

constant-on-time (COT) control to provide fast

transient response and ease loop stabilization.

The operating frequency can be set to 600kHz,

800kHz, or 1000kHz with MODE configuration,

allowing the MP8792’s frequency to remain

constant regardless of the input or output

voltages.

The output voltage start-up ramp is controlled

by an internal 1ms timer. It can be increased by

adding a capacitor on TRK/REF. An open-drain

power good (PG) signal indicates whether the

output is within its nominal voltage range. The

PGOOD pin is clamped to about 0.7V by an

external pull-up voltage when the input supply

fails to power the MP8792.

Fully integrated protection features include overcurrent

protection (OCP), over-voltage protection

(OVP), under-voltage protection (UVP), and overtemperature

protection (OTP).

The MP8792 requires a minimal number of

readily available, standard external components.

It is available in a QFN (3mmx4mm) package.

FEATURES

 Wide Input Voltage Range from 2.7V

o 2.7V to 16V with External 3.3V VCC Bias

o 4V to 16V with Internal VCC Bias or

External 3.3V VCC Bias

 Differential Output Voltage Remote Sense

 Configurable Accurate Current Limit Level

 12A Output Current

 Low RDS(ON) Integrated Power MOSFETs

 Proprietary Switching Loss Reduction

Technique

 Adaptive COT for Ultra-Fast Transient

Response

 Stable with Zero-ESR Output Capacitor

 0.5 Reference Voltage across a 0°C to

70°C Junction Temperature Range

 1 Reference Voltage across a -40°C to

+125°C Junction Temperature Range

 Selectable Pulse Skip or Forced CCM

Operation

 Excellent Load Regulation

 Output Voltage Tracking

 Output Voltage Discharge

 PGOOD Active Clamped at Low Level

during Power Failure

 Programmable Soft-Start Time from 1ms

 Pre-Biased Start-Up

 Selectable Switching Frequency from

600kHz, 800kHz, and 1000kHz

 Non-Latch OCP, UVP, OVP, UVLO, and

Thermal Shutdown

 Output Adjustable from 0.6V to 90 of VIN,

up to 5.5V Max

 Available in a QFN (3mmx4mm) Package

 The MPL-AY1265 Inductor Series Matches

Best Performance

APPLICATIONS

 FPGAs, High-Definition TVs, and Monitors

 Communication Systems

 General Power Distribution Systems