MP8776

MP8776

16V, 20A, Synchronous Step-Down Converter with Configurable Current Limit and Remote Sense

Parameters 概要

入力電圧（最小） (V)
2.7
入力電圧 (最大) (V)
16
Iout (max) (A)
20
Iq (typ) (mA)
0.8
Vfb (V)
0.6
fsw（最大）（kHz）
1000
Control Mode
COT Control
パッケージ（mm）
TLGA-21(3x4)
グレード
Catalog

The MP8776 is a fully integrated, high-frequency, synchronous, rectified, step-down switch-mode converter. It offers a very compact solution to achieve up to 20A of output current (I_OUT) across a wide input supply voltage (V_IN) range, with excellent load and line regulation. The device operates at high efficiency across a wide I_OUT load range.

The MP8776 adopts constant-on-time (COT) pulse-width modulation (PWM) control to provide fast transient response and easy loop stabilization. The operating frequency is regulated by a frequency locked loop during operation, which makes filtering easy. The frequency can be set through pin configurations.

The output voltage (V_OUT) start-up ramp is controlled by an internal timer. An open-drain power good (PG) signal indicates whether V_OUT is within its nominal voltage range.

Fully integrated protection features include over-current protection (OCP), V_OUT and V_IN over-voltage protection (OVP), V_OUT under-voltage protection (UVP), and over-temperature protection (OTP).

The MP8776 requires a minimal number of readily available standard external components, and is available in a TLGA-21 (3mmx4mm) package.

機能と利点

Wide Input Voltage (V_IN) Range:
- 2.7V to 16V with External 3.3V VCC Bias
- 4V to 16V with Internal Bias or External 3.3V VCC Bias
Differential Output Voltage (V_OUT) Remote Sense
Configurable Accurate Current Limit
20A Continuous Output Current (I_OUT)
Integrated, Low On Resistance (R_DS(ON)) Power MOSFETs
Adaptive Constant-On-Time (COT) Control for Ultra-Fast Transient Response
Stable with Zero-ESR Output Capacitor (C_OUT)
Selectable Pulse-Skip Mode (PSM) or Forced Continuous Conduction Mode (FCCM) Operation
Excellent Load Regulation
Pre-Biased Start-Up
Internal Soft Start (SS) and Soft Shutdown
Power Good (PG) Active Clamped at Low Level during Power Failure
600kHz, 800kHz, or 1000kHz Selectable Switching Frequency (f_SW)
V_OUT Adjustable from 0.6V to 5.5V Max
Available in a TLGA-21 (3mmx4mm) Package
Optimized Performance with MPS Inductor MPL-AY1050 and MPL-AY1265 Series