MAX77827

5.5V Input, 1.8A/3.1A Switch Buck-Boost Converter with 6μA I_Q

High Efficiency, Low I_Q Buck-Boost Converter

概述

说明

The MAX77827 is a high-efficiency buck-boost regulator targeted for one-cell Li-ion powered applications with the lowest typical quiescent current in the industry of 6μA. It supports input voltages of 1.8V to 5.5V and an output voltage range of 2.3V to 5.3V. The IC provides two different switching current levels (1.8A and 3.1A) to optimize external component sizing based on given load current requirements. With the 1.8A switching current-limit option, the IC can support up to 1.0A load current in buck mode and 900mA in boost mode (V_IN = 3.0V, V_OUT = 3.3V).

The peak efficiency of 96% makes the IC one of the best solutions as a DC/DC converter to supply a rail for battery-powered portable applications.

The IC features an adjustable output voltage, which can be programmed from 2.3V to 5.3V through a single resistor. Two GPIO pins are available to support force PWM enable function and power-OK (POK) indicator. A unique control algorithm allows high-efficiency, outstanding line/load transient response, and seamless transition between buck and boost modes. These options provide design flexibility that allow the IC to cover a wide range of applications and use cases while minimizing board space.

The MAX77827 is available in a 1.61mm x 2.01mm, 12-bump wafer-level package (WLP).

MAX77827: TSimplified Block Diagram

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关键特性

1.8V to 5.5V Input Voltage Range
2.3V to 5.3V Single Resistor Adjustable Output Voltage
1.6A Maximum Output Current (3.1A I_LIM Option, Buck Mode)
900mA Maximum Output Current (1.8A I_LIM Option, Boost Mode 3.0V_IN, 3.3V_OUT)
96% Peak Efficiency (3.3V_IN, 3.3V_OUT)
SKIP Mode for Higher Light-Load Efficiency
6μA Ultra-Low Typical Quiescent Current (At T_J = +25°C)
2.5MHz Nominal Switching Frequency
Enable Pin
GPIO Pins for System Design Convenience
- FPWM (Forced PWM) Mode Selection Pin
- POK Indicator Pin
UVLO, Soft-Start, Active-Output Discharge, Overcurrent, and Thermal Shutdown Protections
1.61mm x 2.01mm, 12-Bump WLP

应用

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物联网(IoT)设备
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设计资源

MAX77827EVKIT: Evaluation Kit for the MAX77827

质量与环境

型号	生产流程	工艺	样本量	不合格	FIT @ 25°C	FIT @ 55°C

备注：通过技术手段对故障率进行汇总，并映射到相关的材料部件号。故障率与被测件的数量密切相关。

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