MPQ8633AGLE-Z

Eigenschaften：

DESCRIPTION

The MPQ8633A is a fully integrated, highfrequency, synchronous buck converter. It

offers a very compact solution to achieve up to

12A output current over a wide input supply

range with excellent load and line regulation.

The MPQ8633A operates at high efficiency

over a wide output current load range.

The MPQ8633A adopts internally compensated

constant-on-time (COT) control mode that

provides fast transient response and eases loop

stabilization.

The operating frequency is set easily to 600kHz,

800kHz, or 1000kHz with the MODE

configuration, allowing the MPQ8633A

frequency to remain constant regardless of the

input/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(PGOOD) signal indicates the

output is within its nominal voltage range. The

PGOOD is clamped to around 0.7V with

external pull-up voltage when the input supply

fails to power the MPQ8633A.

Fully integrated protection features include overcurrent protection (OCP), over-voltage protection

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

The MPQ8633A requires a minimum number of

readily available, standard, external components

and is available in a QFN 3mm x 4mm package. 

FEATURES

 Wide Input Voltage Range from 2.7V:

o 2.7V to 16V with External 3.3V VCC

Bias

o 4 V to 16V with Internal Bias or External

3.3V VCC Bias

 Differential Output Voltage Remote Sense

 Programmable Accurate Current Limit Level

 12A Output Current

 Low RDS(ON) Integrated Power MOSFETs

 Proprietary Switching Loss Reduction

Technique

 Adaptive COT for Ultrafast Transient

Response

 Stable with Zero ESR Output Capacitor

 0.5% Reference Voltage over 0C to

+70C Junction Temperature Range

 1% Reference Voltage from -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 Low Level during

Power Failure

 Programmable Soft-Start Time from 1ms

 Pre-Bias Start-Up

 Selectable Switching Frequency from

600kHz, 800kHz, and 1000kHz

 Non-Latch OCP, UVP, UVLO, Thermal

Shutdown, and Latch-Off for OVP.

 Output Adjustable from 0.6V to 90%*Vin, up

to 5.5V Max.

 Available in a QFN 3mm x 4mm Package

APPLICATIONS

 Telecom and Networking Systems

 Server, Cloud-Computing, Storage

 Base Stations

 General Purpose Point-of-Load (PoL)

 12V Distribution Power Systems

 High-end TV

 Game Consoles and Graphic Cards 

TYPICAL APPLICATION

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