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參數資料
| 型號： | ISL6432CB-T |
| 廠商： | Intersil |
| 文件頁數： | 1/12頁 |
| 文件大?。?/td> | 274K |
| 描述： | IC REG QD BCK/LINEAR 16-SOIC |
| 標準包裝： | 2,500 |
| 拓撲： | 降壓（降壓）同步（1），線性（LDO）（3） |
| 功能： | 任何功能 |
| 輸出數： | 4 |
| 頻率 - 開關： | 300kHz |
| 電壓/電流 - 輸出 1： | 控制器 |
| 電壓/電流 - 輸出 2： | 控制器 |
| 電壓/電流 - 輸出 3： | 控制器 |
| 帶 LED 驅動器： | 無 |
| 帶監控器： | 無 |
| 帶序列發生器： | 是 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | * |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | * |
| 包裝： | 帶卷 (TR) |
1
TM
File Number 9019
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Americas Inc.
Copyright ?Intersil Americas Inc. 2001, All Rights Reserved
ISL6432
PWM and Triple Linear Power Controller
for Home Gateway Applications
The ISL6432 provides the power control and protection for
four output voltages for use with high-performance
microprocessor and embedded controller based
communications chip sets. The IC integrates a voltage-mode
PWM controller and three linear controllers, as well as
monitoring and protection functions into a 16-lead SOIC
package. The PWM controller is intended to regulate the
microprocessor memory core voltage with a synchronous-
rectified buck converter. The linear controllers can be
configured to generate DSP power, as well as upstream and
downstream voltages. Both the switching regulator and
linear voltage references provide ?% of static regulation
over line, load, and temperature ranges. All outputs are user-
adjustable by means of an external resistor divider. All linear
controllers employ bipolar NPNs for the pass transistors.
The ISL6432 monitors all the output voltages. The PWM
controllers adjustable overcurrent function monitors the
output current by using the voltage drop across the upper
MOSFETs r
DS(ON)
. The linear regulator outputs are
monitored via the FB pins for undervoltage events.
Applications
"
Low-Power Distributed DC-DC Conversion
"
Cable Modem and DSL Modem Power Regulation
" High Performance Memory Applications
Features
" Provides 4 Regulated Voltages
- Memory Core, Embedded Controller/DSP, Tuner
" Drives Bipolar Linear Pass Transistors
" Externally Resistor-Adjustable Outputs
" Simple Single-Loop Control Design
- Voltage-Mode PWM Control
" Fast PWM Converter Transient Response
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Ratio
" Excellent Output Voltage Regulation
- All Outputs: ?% Over Temperature
" Overcurrent Fault Monitors
- Switching Regulator Does Not Require Extra Current
Sensing Element, Uses MOSFETs r
DS(ON)
" Small Converter Size
- 300kHz Constant Frequency Operation
- Small External Component Count
" ACPI Compatible
" Voltage Sequencing
Pinout
ISL6432 (SOIC)
TOP VIEW
Ordering Information
PART NUMBER TEMP. RANGE (
o
C) PACKAGE
PKG.
NO.
ISL6432CB
0 to 70
16 Ld SOIC M16.15
ISL6432EVAL1
Evaluation Board
DRIVE2
FB2
FB
COMP
FB3
OCSET
DRIVE4
FB4
DRIVE3
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
UGATE
GND
LGATE
PHASE
BOOT
VCC
PGND
Data Sheet
June 2001
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