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參數資料
| 型號： | ISL6525 |
| 廠商： | Intersil Corporation |
| 英文描述： | Adjustable Precision Shunt Regulator 5-SOT-23 -40 to 125 |
| 中文描述： | 巴克和同步整流脈沖寬度調制（PWM）控制器 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 120K |
| 代理商： | ISL6525 |
1
TM
File Number
4998.1
ISL6525
Buck and Synchronous-Rectifier
Pulse-Width Modulator (PWM) Controller
The ISL6525 provides complete control and protection for a
DC-DC converter optimized for high-performance
microprocessor applications. It is designed to drive two
N Channel MOSFETs in a synchronous-rectified buck
topology. The ISL6525 integrates all of the control, output
adjustment, monitoring and protection functions into a single
package. A programmable delay time for the PGOOD signal
makes it especially suitable for the VTT regulation in
VRM8.5 applications.
The output voltage of the converter can be precisely
regulated to as low as 1.20V, with a maximum tolerance of
±
1% over temperature and line voltage variations.
The ISL6525 provides simple, single feedback loop, voltage-
mode control with fast transient response. It includes a
200kHz free-running triangle-wave oscillator that is
adjustable from below 50kHz to over 1MHz. The error
amplifier features a 15MHz gain-bandwidth product and
6V/
μ
s slew rate which enables high converter bandwidth for
fast transient performance. The resulting PWM duty ratio
ranges from 0% to 100%.
The ISL6525 protects against over-current conditions by
inhibiting PWM operation. The ISL6525 monitors the current
by using the r
DS(ON)
of the upper MOSFET which eliminates
the need for a current sensing resistor.
Features
Drives Two N-Channel MOSFETs
Operates From +5V or +12V Input
Simple Single-Loop Control Design
- Voltage-Mode PWM Control
Fast Transient Response
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Ratio
Excellent Output Voltage Regulation
- 1.20V Internal Reference
-
±
1% Over Line Voltage and Temperature
Programmable delay for PGOOD signal
Over-Current Fault Monitor
- Does Not Require Extra Current Sensing Element
- Uses MOSFETs r
DS(ON)
Small Converter Size
- Constant Frequency Operation
- 200kHz Free-Running Oscillator Programmable from
50kHz to Over 1MHz
14 Pin, SOIC Package
Applications
Power Supply for Various Microprocessors
VTT Regulation for VRM8.5
High-Power 5V to 3.xV DC-DC Regulators
Low-Voltage Distributed Power Supplies
Pinout
ISL6525
(SOIC)
TOP VIEW
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
ISL6525CB
0 to 70
14 Ld SOIC
M14.15
8
9
10
11
12
13
14
7
6
5
4
3
2
1
OCSET
SS
GND
COMP
FB
DELAY
LGATE
PGND
BOOT
UGATE
PHASE
VCC
PGOOD
RT
Data Sheet
March 2001
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
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ISL6525CB | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 標準包裝:4,000 系列:- PWM 型:電壓模式 輸出數:1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| ISL6525CB-T | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 標準包裝:4,000 系列:- PWM 型:電壓模式 輸出數:1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| ISL6525CBZ | 功能描述:電壓模式 PWM 控制器 VTT REG FORVRM 8.5 1 4LD RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| ISL6525CBZ-T | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數:1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| ISL6526ACB | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 標準包裝:4,000 系列:- PWM 型:電壓模式 輸出數:1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
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