MAX77533

14V Input, 1.5A High-Efficiency Buck Converter with 9μA IQ

Save Power and Board Space with Small Solution Size


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说明

The MAX77533 is a synchronous 1.5A step-down DC-DC converter optimized for portable 2-cell and 3-cell battery-operated and USB-C applications. The converter operates on an input supply between 3V and 14V. Output voltage is adjustable between 0.8V and 5V in 50mV steps through an I2C serial interface or 1.55V to 99% of the supply voltage with external feedback resistors. Factory-programmed default voltages of 1.2V, 1.8V, and 3.3V are offered to reduce component count for common rails. The device features a low-IQ SKIP mode which allows excellent efficiency at light loads.

Dedicated enable and power-OK (POK) pins allow simple hardware control. An I2C serial interface is optionally used for full configuration and control for dynamic voltage scaling and system power optimization.

Built-in undervoltage lockout (UVLO), output active discharge, cycle-by-cycle current limit, thermal shutdown, and short-circuit protection ensure safe operation under abnormal operating conditions.

The MAX77533 is available in a 12-bump, 0.4mm pitch wafer-level package (WLP).

MAX77533: Simplified Application Circuit MAX77533: Simplified Application Circuit 放大+

关键特性

  • 1.5A Single Channel Buck Regulator
  • 3V to 14V Input Voltage Range
  • 0.8V to 99%VSUP Output Voltage Range
    • 0.8V to 5V I2C Programmable in 50mV Steps
    • 1.55V to 99%VSUP with External Feedback Resistors
    • 1.2V, 1.8V, or 3.3V Factory Preset Options
  • High-Efficiency, Low-IQ Extends Battery Life
    • 94% Peak Efficiency at 7.4VSUP, 3.3VOUT (2520 Inductor)
    • 9μA IQ (12VSUP, 1.8VOUT Internal Feedback Version)
    • Selectable Light-Load SKIP and Forced-PWM Modes
  • 1MHz or 550kHz Fixed-Frequency Switching
  • Hardware or Software Control
    • Enable Input and Power-OK Output Pins
    • Optional I2C Full Control Interface
  • Protection Features
    • Cycle-by-Cycle Inductor Peak Current Limit
    • Short-Circuit Hiccup Mode, UVLO, and Thermal Shutdown Protections
    • 1ms Default Soft-Start
  • Small Size
    • 1.85mm x 1.4mm (0.7mm max. height) WLP
    • 12-Bump, 0.4mm Pitch, 3 x 4 Array

应用

  • 2节/3节高功率密度供电
  • 无人机、HD相机和笔记本电脑
  • 便携式Li+/锂离子电池供电设备
  • 空间受限的便携式电子设备

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX77533AEVKIT: Evaluation Kit for the MAX77533
MAX77533B12EVKIT: Evaluation Kit for the MAX77533
MAX77533B18EVKIT: Evaluation Kit for the MAX77533
MAX77533B33EVKIT: Evaluation Kit for the MAX77533

工具和模型

  • EE-Sim: MAX77533 设计和仿真
  • 申请可靠性报告: MAX77533 
    型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

    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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