ISL95338

Bidirectional Buck-Boost Voltage Regulator

Product Status: Mass Production

OVERVIEW

The ISL95338 is a bidirectional, buck-boost voltage regulator that provides buck-boost voltage regulation and protection features. The Renesas advanced R3™ Technology provides high light-load efficiency, fast transient response, and seamless DCM/CCM transitions.

The ISL95338 takes input power from a wide range of DC power sources (such as conventional AC/DC ADPs, USB PD ports, and travel ADPs) and safely converts it to a regulated voltage up to 20V. The ISL95338 can also convert a wide range DC power source connected at its output (system side) to a regulated voltage to its input (ADP side). This bidirectional buck-boost regulation feature makes its application very flexible.

The ISL95338 includes various system operation functions such as Forward mode enable, Reverse mode enable, programmable soft-start time, and adjustable VOUT in both the forward direction and reverse direction. The protection functionalities include OCP, OVP, UVP, and OTP.

The ISL95338 has serial communication through SMBus/I2C that allows programming of many critical parameters to deliver a customized solution. These programming parameters include, but are not limited to: output current limit, input current limit, and output voltage setting.

KEY FEATURES

  • Bidirectional buck, boost, and buck-boost operation
  • Input voltage range: 3.8V to 24V (no dead zone)
  • Output voltage: up to 20V
  • Up to 1MHz switching frequency
  • Programmable soft-start time
  • LDO output for VDD and VDDP
  • System status alert function
  • Bidirectional internal discharge function
  • Active switching for negative voltage transitions
  • Bypass mode in both directions
  • Forward mode enable, Reverse mode enable
  • OCP, OVP, UVP, and OTP protection
  • SMBus and auto-increment I2C compatible
  • Pb-free (RoHS compliant)
  • 32 Ld 4x4 TQFN Package

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL95338
Basic Information
生产状态
Mass Production
输入电压最小值 (V)
3.8
输入电压最大值 (V)
24
输入限流精度 (%)
-
电池充电电压 (V)
up to 20V
电池充电电压调节 (%)
12mV steps
直流适配器检测
Voltage sensing
拓扑
Buck-Boost
开关频率典型值 (kHz)
620 to 1000
最大占空比 (%)
100
听觉噪音
No
热关断 (°C)
-
电池化学物品
-
资质级别
Standard
输入电压范围 (V)
3.8 to 24
CAN 采样
YES
温度范围
-40 to +100

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