ISL62392 High-Efficiency, Triple-Output System Power Supply Controller for Notebook Computers

VIN (min) (V)	5.5
VIN (max) (V)	25
VOUT (min) (V)	0.6
VOUT (max) (V)	5.5
IOUT (max) (A)	20

The ISL62391, ISL62392 controller generates supply voltages for battery-powered systems. It includes two pulse-width modulation (PWM) controllers, adjustable from 0.6V to 5.5V, and a linear regulator (LDO3) that generates a fixed 3.3V and can deliver up to 100mA. The ISL62391, ISL62392 includes on-board power-up sequencing, a power-good (PGOOD) output, digital soft-start, and internal soft-stop output discharge that prevents negative voltages on shutdown.

The patented R3 PWM control scheme provides a low jitter system with fast response to load transients. Light-load efficiency is improved with period-stretching discontinuous conduction mode (DCM) operation. To eliminate noise in audio frequency applications, an ultrasonic DCM mode is included, which limits the minimum switching frequency to 28kHz.

The ISL62391 and ISL62392 are identical except for how their overvoltage protection is handled. The ISL62391 utilizes a tri-state overvoltage scheme, whereas the ISL62392 employs a soft-crowbar method.

The ISL62391, ISL62392 is available in a 28 Ld 4x4 TQFN package and operates over the extended temperature range (-40°C to +100°C).

ISL62392 特点

High Performance R3 Technology
Fast Transient Response
±1% Output Voltage Accuracy
2 Fully Programmable Switch-Mode Power Supplies
Programmable Switching Frequency
Fixed 3.3V LDO Output
Internal Soft-Start and Soft-Stop Output Discharge
Wide Input Voltage Range: 5.5V to 25V
Full and Ultrasonic Pulse-Skipping Mode
Power-Good Indicator
Overvoltage, Undervoltage and Overcurrent Protection
Thermal Monitor and Protection
Pb-Free (RoHS Compliant)

ISL62392 应用

Notebook and Sub-Notebook Computers
PDAs and Mobile Communication Devices
3-Cell and 4-Cell Li+ Battery-Powered Devices

ISL62392 芯片订购指南

芯片型号	产品状态	温度范围	封装尺寸图	潮湿敏感度等级MSL	美元价格US $
ISL62392HIEVAL1Z	量产		评估板	N/A	价格录入中
ISL62392HRTZ	量产	Hi-Temp Comm	28 Ld TQFN	1	2.73
ISL62392HRTZ-T	量产	Hi-Temp Comm	28 Ld TQFN T +R	1	2.73
ISL62392IRTZ	量产	工业级	28 Ld TQFN	1	3.8
ISL62392IRTZ-T	量产	工业级	28 Ld TQFN T +R	1	3.8
ISL62392LOEVAL1Z	量产		评估板	N/A	价格录入中