isl6236a Intersil Corporation, isl6236a Datasheet

isl6236a

Manufacturer Part Number

isl6236a

Description

High-efficiency, Quad-output, Main Power Supply Controllers For Notebook Computers

Manufacturer

Intersil Corporation

Datasheet

1.ISL6236A.pdf (37 pages)

Current page: 1 of 37
Download datasheet (4Mb)

High-Efficiency, Quad-Output, Main Power

Supply Controllers for Notebook

Computers

The ISL6236A dual step-down, switch-mode power-supply

(SMPS) controller generates logic-supply voltages in

battery-powered systems. The ISL6236A includes two

pulse-width modulation (PWM) controllers, 5V/3.3V and

1.5V/1.05V. The output of SMPS1 can also be adjusted from

0.7V to 5.5V. The SMPS2 output can be adjusted from 0V to

2.5V by setting REFIN2 voltage. An optional external charge

pump can be monitored through SECFB. This device features

a linear regulator providing 3.3V/5V, or adjustable from 0.7V to

4.5V output via LDOREFIN. The linear regulator provides up

to 100mA output current with automatic linear-regulator

bootstrapping to the BYP input. When in switchover, the LDO

output can source up to 200mA. The ISL6236A includes

on-board power-up sequencing, the power-good (POK )

outputs, digital soft-start, and internal soft-stop output

discharge that prevents negative voltages on shutdown.

A constant on-time PWM control scheme operates without

sense resistors and provides 100ns response to load

transients while maintaining a relatively constant switching

frequency. The unique ultrasonic pulse-skipping mode

maintains the switching frequency above 25kHz, which

eliminates noise in audio applications. Other features include

pulse skipping, which maximizes efficiency in light-load

applications, and fixed-frequency PWM mode, which reduces

RF interference in sensitive applications.

Ordering Information

NOTE: Intersil Pb-free plus anneal products employ special Pb-free

material sets; molding compounds/die attach materials and 100% matte tin

plate termination finish, which are RoHS compliant and compatible with both

SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL

classified at Pb-free peak reflow temperatures that meet or exceed the

Pb-free requirements of IPC/JEDEC J STD-020.

ISL6236AIRZ

ISL6236AIRZ-T ISL6236 AIRZ -40 to +100 32 Ld 5x5 QFN

NUMBER

(Note)

PART

ISL6236 AIRZ -40 to +100 32 Ld 5x5 QFN L32.5x5B

MARKING

PART

RANGE

TEMP

(°C)

Data Sheet

(Tape and Reel)

PACKAGE

(Pb-Free)

1-888-INTERSIL or 1-888-468-3774

L32.5x5B

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

DWG. #

PKG.

Features

• Wide Input Voltage Range 4.5V to 25V

• Dual Fixed 1.05V/3.3V and 1.5V/5.0V Outputs or

• Secondary Feedback Input (Maintains Charge Pump

• 1.7ms Digital Soft-Start and Independent Shutdown

• Fixed 3.3V/5.0V, or Adjustable Output 0.7V to 4.5V,

• 3.3V Reference Voltage ±2.0%: 5mA

• 2.0V Reference Voltage ±1.0%: 50µA

• Constant ON-TIME Control with 100ns Load-Step

• Frequency Selectable

• r

• Programmable Current Limit with Foldback Capability

• Selectable PWM, Skip or Ultrasonic Mode

• BOOT Voltage Monitor with Automatic Refresh

• Independent POK1 and POK2 Comparators

• Soft-Start with Pre-Biased Output and Soft-Stop

• Independent ENABLE

• High Efficiency - up to 97%

• Very High Light Load Efficiency (Skip Mode)

• 5mW Quiescent Power Dissipation

• Thermal Shutdown

• Extremely Low Component Count

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Notebook and Sub-Notebook Computers

• PDAs and Mobile Communication Devices

• 3-Cell and 4-Cell Li+ Battery-Powered Devices

• DDR1, DDR2, and DDR3 Power Supplies

• Graphic Cards

• Game Consoles

• Telecommunications

Adjustable 0.7V to 5.5V (SMPS1) and 0V to 2.5V

(SMPS2), ±1.5% Accuracy

Voltage)

±1.5% (LDO): 200mA

Response

DS(ON)

All other trademarks mentioned are the property of their respective owners.

June 28, 2007

Current Sensing

Intersil (and design) is a registered trademark of Intersil Americas Inc.

ISL6236A

FN6453.1

Related parts for isl6236a

Related keywords

isl6236a datasheet
isl6236a data sheet
isl6236a pdf datasheet
isl6236a component
isl6236a part
isl6236a distributor
isl6236a RoHS
isl6236a datasheet download