Datasheet > ISL6545A

ISL6545A

更新时间： 2024-11-28 04:58:43

品牌	Logo	应用领域
英特矽尔 - INTERSIL		控制器
页数	文件大小	规格书
16页	314K
描述
5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

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ISL6545A 数据手册

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ISL6545, ISL6545A

Data Sheet

November 15, 2006

FN6305.3

5V or 12V Single Synchronous Buck

Features

Pulse-Width Modulation (PWM) Controller

• Operates from +5V or +12V Supply Voltage (for bias)

The ISL6545 makes simple work out of implementing a

complete control and protection scheme for a DC/DC stepdown

converter driving N-channel MOSFETs in a synchronous buck

topology. Since it can work with either 5V or 12V supplies, this

one IC can be used in a wide variety of applications within a

system. The ISL6545 integrates the control, gate drivers, output

adjustment, monitoring and protection functions into a single 8

Ld SOIC or 10 Ld DFN package.

- 1.0V to 12V V Input Range (up to 20V possible with

restrictions; see Input Voltage Considerations)

- 0.6V to V Output Range

- Integrated Gate Drivers use V

(5V to 12V)

- 0.6V Internal Reference; ±1.0% tolerance

• Simple Single-Loop Control Design

- Voltage-Mode PWM Control

- Drives N-Channel MOSFETs

The ISL6545 provides single feedback loop, voltage-mode

control with fast transient response. The output voltage can be

precisely regulated to as low as 0.6V, with a maximum

tolerance of ±1.0% over temperature and line voltage

variations. A selectable fixed frequency oscillator (ISL6545 for

300kHz; ISL6545A for 600kHz) reduces design complexity,

while balancing typical application cost and efficiency.

• Fast Transient Response

- High-Bandwidth Error Amplifier

- Full 0% to 100% Duty Cycle

• Lossless, Programmable Overcurrent Protection

- Uses Lower MOSFET’s r

DS(ON)

• Small Converter Size in 8 Ld SOIC or 10 Ld DFN

- 300kHz or 600kHz Fixed Frequency Oscillator

The error amplifier features a 20MHz gain-bandwidth

product and 9V/μs slew rate which enables high converter

bandwidth for fast transient performance. The resulting

PWM duty cycles range from 0% to 100%.

- Fixed Internal Soft-Start, Capable into a Pre-biased

Load

- Integrated Boot Diode

Protection from overcurrent conditions is provided by

- Enable/Shutdown Function on COMP/SD Pin

- Output Current Sourcing and Sinking

monitoring the r

of the lower MOSFET to inhibit PWM

DS(ON)

operation appropriately. This approach simplifies the

implementation and improves efficiency by eliminating the

need for a current sense resistor.

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

Pinout

• Power Supplies for Microprocessors or Peripherals

- PCs, Embedded Controllers, Memory Supplies

- DSP and Core Communications Processor Supplies

ISL6545 (SOIC)

TOP VIEW

• Subsystem Power Supplies

- PCI, AGP; Graphics Cards; Digital TV

BOOT

UGATE

PHASE

COMP/SD

- SSTL-2 and DDR/DDR2/DDR3 SDRAM Bus

Termination Supply

GND

• Cable Modems, Set Top Boxes, and DSL Modems

• Industrial Power Supplies; General Purpose Supplies

• 5V or 12V-Input DC/DC Regulators

LGATE/OCSET

VCC

ISL6545 (10 LD 3x3 DFN)

• Low-Voltage Distributed Power Supplies

TOP VIEW

BOOT

PHASE

UGATE

COMP/SD

GND

N/C

GND

N/C

LGATE/OCSET

VCC

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

1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

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

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与ISL6545A相关器件

型号	品牌	获取价格	描述	数据表
ISL6545ACBZ	INTERSIL	获取价格	5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6545ACBZ	RENESAS	获取价格	5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller; DFN10, SOIC8; T
ISL6545ACBZ-T	RENESAS	获取价格	5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller; DFN10, SOIC8; T
ISL6545ACBZ-T13	RENESAS	获取价格	Switching Controller
ISL6545ACBZ-T7	RENESAS	获取价格	Switching Controller
ISL6545ACRZ	INTERSIL	获取价格	5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6545ACRZ	RENESAS	获取价格	5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller; DFN10, SOIC8; T
ISL6545ACRZ-T	RENESAS	获取价格	5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller; DFN10, SOIC8; T
ISL6545AEVAL1	INTERSIL	获取价格	5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6545AIBZ	INTERSIL	获取价格	5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

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