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

Package Information

CAD Model:View CAD Model
Pkg. Type:TQFN
Pkg. Code:LYW
Lead Count (#):28
Pkg. Dimensions (mm):3.99 x 3.99 x 0.75
Pitch (mm):0.4

Environmental & Export Classifications

Moisture Sensitivity Level (MSL)3
Pb (Lead) FreeYes
RoHS (ISL62392CIRTZ-T)Download
ECCN (US)
HTS (US)

Product Attributes

Lead Count (#)28
Carrier TypeReel
Moisture Sensitivity Level (MSL)3
Pb (Lead) FreeYes
Pb Free CategoryPb-Free 100% Matte Tin Plate w/Anneal-e3
Temp. Range (°C)-40 to +85°C
DDR CapableNo
Input Voltage (Max) (V)25
Input Voltage (Max) [Rail 1] (V)25 - 25
Input Voltage (Min) (V)5.5
Input Voltage (Min) [Rail 1] (V)5.5
Length (mm)4
Linear OutputYes
MOQ6000
Output Current (Max) [Rail 1] (A)20
Output Current 1 (Max) (A)20
Output Current 2 (Max) (A)20
Output Voltage (Max) [Rail 1] (V)5.5
Output Voltage (Min) (V)0.6
Output Voltage (Min) [Rail 1] (V)0.6
Output Voltage 1 (Max) (V)5.5
Output Voltage 2 (Max)5.5
Output Voltage 3 (Max)3.3
Outputs (#)3
Parametric CategoryBuck Controllers (External FETs)
Pitch (mm)0.4
Pkg. Dimensions (mm)4.0 x 4.0 x 0.75
Pkg. TypeTQFN
Qualification LevelStandard
Switching Frequency Range (Typical) (kHz)200 - 600
Thickness (mm)0.75
Topology [Rail 1]Buck
Width (mm)4

Description

The ISL62392C controller generates supply voltage 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 ISL62392C 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, ISL62391C and ISL62392, ISL62392C are identical except for how their overvoltage protection is handled. The ISL62391C utilizes a tri-state overvoltage scheme, whereas the ISL62392C employs a soft-crowbar method. The ISL62392C is available in a 28 Ld 4x4 TQFN package and operates over the extended temperature range (-40°C to +100°C).