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 is used to provide 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 (conventional AC/DC ADPs, USB PD ports, travel ADPs, etc.) 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, OTP, etc.

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
Production Status
Mass Production
Input Voltage Min (V)
3.8
Input Voltage Max (V)
24
Battery Charge Voltage (V)
up to 20V
Battery Charge Voltage Adjust (%)
12mV steps
DC Adapter Detection
Voltage sensing
Topology
R3 modulator
Switching Frequency Typ (kHz)
620 to 1000
Max Duty Cycle (%)
100
Audible Noise
No
Qualification Level
Standard
Input Voltage Range (V)
3.8 to 24
Can Sample
YES
Temperature Range
-40 to +100

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