Datasheet > ISL6445

ISL6445

更新时间： 2024-11-24 22:55:35

品牌	Logo	应用领域
英特矽尔 - INTERSIL		控制器
页数	文件大小	规格书
15页	352K
描述
1.4MHz Dual, 180 Degree Out-of-Phase, Step-Down PWM Controller

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ISL6445 数据手册

ISL6445

Data Sheet

September 9, 2005

FN9230.0

PRELIMINARY

1.4MHz Dual, 180° Out-of-Phase,

Step-Down PWM Controller

Features

• Wide Input Supply Voltage Range

- 5.6V to 24V

The ISL6445 is a high-performance, dual-output PWM

controller optimized for converting wall adapter, battery or

network intermediate bus DC input supplies into the system

supply voltages required for a wide variety of applications.

Each output is adjustable down to 0.8V. The two PWMs are

synchronized 180^oout of phase reducing the RMS input

current and ripple voltage.

- 4.5V to 5.6V

• Two Independently Programmable Output Voltages

• Switching Frequency . . . . . . . . . . . . . . . . . . . . . . .1.4MHz

• Out of Phase PWM Controller Operation

- Reduces Required Input Capacitance and Power

Supply Induced Loads

The ISL6445 incorporates several protection features. An

adjustable overcurrent protection circuit monitors the output

current by sensing the voltage drop across the lower

MOSFET. Hiccup mode overcurrent operation protects the

DC/DC components from damage during output

• No External Current Sense Resistor

- Uses Lower MOSFET’s r

DS(ON)

• Programmable Soft-Start

overload/short circuit conditions. Each PWM has an

independent logic-level shutdown input (SD1 and SD2).

• Extensive Circuit Protection Functions

- PGOOD

- UVLO

- Overcurrent

- Overtemperature

- Independent Shutdown for Both PWMs

A single PGOOD signal is issued when soft-start is complete

on both PWM controllers and their outputs are within 10% of

the set point. Thermal shutdown circuitry turns off the device

if the junction temperature exceeds +150°C.

• Excellent Dynamic Response

- Voltage Feed-Forward with Current Mode Control

Pinout

ISL6445 (QSOP)

TOP VIEW

• Pb-Free Plus Anneal Available (RoHS Compliant)

LGATE2

LGATE1

Applications

BOOT2

BOOT1 23

• Power Supplies with Two Outputs

• xDSL Modems/Routers

• DSP, ASIC, and FPGA Power Supplies

• Set-Top Boxes

UGATE2 UGATE1

PHASE1 21

ISEN1 20

PGND 19

SD1 18

PHASE2

ISEN2

PGOOD

VCC5

SD2

• Dual Output Supplies for DSP, Memory, Logic, µP Core

and I/O

SS1 17

SS2

SGND 16

10 OCSET2 OCSET1 15

• Telecom Systems

11 FB2

12 VIN

FB1 14

BIAS 13

Ordering Information

PART

TEMP.

PKG.

NUMBER

MARKING RANGE (°C) PACKAGE DWG. #

ISL6445IAZ* ISL6445IAZ

(See Note)

-40 to 85

24 Ld QSOP M24.15

(Pb-free)

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.

*Add “-TK” suffix for tape and reel.

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.

12 3 4 5 6 7...15

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与ISL6445相关器件

型号	品牌	获取价格	描述	数据表
ISL6445IAZ	INTERSIL	获取价格	1.4MHz Dual, 180 Degree Out-of-Phase, Step-Down PWM Controller
ISL6445IAZ-TK	INTERSIL	获取价格	1.4MHz Dual, 180 Degree Out-of-Phase, Step-Down PWM Controller
ISL6446	INTERSIL	获取价格	Dual (180Â° Out-of-Phase) PWM and Linear Cont
ISL6446A	INTERSIL	获取价格	Dual (180Â°Out-of-Phase) PWM and Linear Contr
ISL6446AIAZ	RENESAS	获取价格	Dual (180° Out-of-Phase) PWM and Linear Controller; QSOP24; Temp Range: -40&de
ISL6446AIAZ-TK	RENESAS	获取价格	Dual (180° Out-of-Phase) PWM and Linear Controller; QSOP24; Temp Range: -40&de
ISL6446IAZ	INTERSIL	获取价格	Dual (180Â° Out-of-Phase) PWM and Linear Cont
ISL6446IAZ-TK	INTERSIL	获取价格	Dual (180Â° Out-of-Phase) PWM and Linear Cont
ISL6455AIRZ	ROCHESTER	获取价格	1.3 A SWITCHING REGULATOR, 880 kHz SWITCHING FREQ-MAX, PQCC24, 4 X 4 MM, GREEN, PLASTIC, M
ISL6455IRZ	RENESAS	获取价格	1.3 A SWITCHING REGULATOR, 880 kHz SWITCHING FREQ-MAX, PQCC24, 4 X 4 MM, GREEN, PLASTIC, M

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