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IC / ISL62383HRTZ / QFN-28

تولید کننده: Intersil
مدل کالا: ISL62383HRTZ
موجودی:
تماس 8893- 6186
قیمت: 0تومان

ISL62383HRTZ - Intersil - QFN-28

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

 

The ISL62381, ISL62382, ISL62383, ISL62381C, ISL62382C and ISL62383C family of controllers generate supply voltages for battery-powered systems. These controllers include two pulse-width modulation (PWM) controllers, adjustable from 0.6V to 5.5V, and two linear regulators, LDO5 and LDO3, that generate a fixed 5V and an adjustable output respectively, and each can deliver up to 100mA. The ISL62383 and ISL62383C have the same outputs as the ISL62381, ISL62382, ISL62381C and ISL62382C but without LDO3 linear regulator. The channel 2 switching regulator will automatically take over the LDO5 load
when programmed to 5V output. This provides a large power avings and boosts efficiency. These controllers include onboard ower-up sequencing, two power-good (PGOOD outputs, digital soft-start, and internal soft-stop output discharge that prevent 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 approximately 28kHz.
The ISL62381, ISL62382, ISL62381C and ISL62382C are available in a 32 Ld 5x5 TQFN package, and the ISL62383 and ISL62383C are available in a 28 Ld 4x4 TQFN package This family of controllers can operate over the extended temperature range /-10°C to +100°C

 

Features


 High Performance R3 Technology
 Fast Transient Response
 ±1% Output Voltage Accuracy: -10°C to +100°C
 Two Fully Programmable Switch-Mode Power Supplies with
Independent Operation
 Programmable Switching Frequency
 Integrated MOSFET Drivers and Bootstrap Diode
 Adjustable (+1.2V to +5V) LDO Output
 Fixed +5V LDO Output with Automatic Switchover to SMPS2
 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
 Fault Identification by PGOOD Pull-Down Resistance
 Thermal Monitor and Protection
 



Applications


 Notebook and Sub-Notebook Computers
 PDAs and Mobile Communication Devices
 3-Cell and 4-Cell Li+ Battery-Powered Devices
 General Purpose Switching Buck Regulators

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