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参数资料
| 型号： | MAX1639ESE |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | High-Speed Step-Down Controller with Synchronous Rectification for CPU Power |
| 中文描述： | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | SOIC-16 |
| 文件页数： | 1/13页 |
| 文件大小： | 108K |
| 代理商： | MAX1639ESE |
________________General Desc ription
The MAX1639 is an ultra-high-performance, step-down
DC-DC controller for CPU power in high-end computer
systems. Designed for demanding applications in which
output voltage precision and good transient response are
critical for proper operation, it delivers over 35A from 1.1V
to 4.5V with ±1% total accuracy from a +5V ±10% supply.
Excellent dynamic response corrects output transients
caused by the latest dynamically clocked CPUs. This
controller achieves over 90% efficiency by using synchro-
nous rectification. Flying-capacitor bootstrap circuitry
drives inexpensive, external N-channel MOSFETs.
The switching frequency is pin-selectable for 300kHz,
600kHz, or 1MHz. High switching frequencies allow the
use of a small surface-mount inductor and decrease out-
put filter capacitor requirements, reducing board area
and system cost.
Output overvoltage protection is enforced by a crowbar
circuit that turns on the low-side MOSFET with 100%
duty factor when the output is 200mV above the normal
regulation point. Other features include internal digital
soft-start, a power-good output, and a 3.5V ±1% refer-
ence output. The MAX1639 is available in a 16-pin
narrow SOIC package.
________________________Applic ations
Local DC-DC Converters for CPUs
Workstations
Desktop Computers
LAN Servers
GTL Bus Termination
____________________________Features
o
Better than ±1% Output Accuracy Over
Line and Load
o
Greater than 90% Efficiency Using N-Channel
MOSFETs
o
Pin-Selected High Switching Frequency:
300kHz, 600kHz, or 1MHz
o
Over 35A Output Current
o
Resistor-Divider Adjustable Output from
1.1V to 4.5V
o
Current-Mode Control for Fast Transient
Response and Cycle-by-Cycle Current-Limit
Protection
o
Short-Circuit Protection with Foldback Current
Limiting
o
Crowbar Overvoltage Protection
o
Power-Good (PWROK) Output
o
Digital Soft-Start
o
High-Current (2A) Drive Outputs
M
High-S peed S tep-Down Controller with
S ync hronous Rec tific ation for CPU Power
________________________________________________________________ Maxim Integrated Products
1
19-1337; Rev 0; 2/98
PART
MAX1639ESE
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
16 Narrow SO
_______________Ordering Information
__________
Typic al Operating Circ uit
Pin Configuration appears at end of data sheet.
V
CC
AGND
REF
FREQ
CC1
CC2
DL
PWROK
LX
BST
DH
PGND
TOV
DD
CSH
OUTPUT
1.1V TO4.5V
INPUT
+5V
V
DD
CSL
FB
MAX1639
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
EVALUATION KIT
AVAILABLE
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PDF描述 |
|---|---|
| MAX1639 | High-Speed Step-Down Controller with Synchronous Rectification for CPU Power |
| MAX1640C | Adjustable-Output, Switch-Mode Current Sources with Synchronous Rectifier |
| MAX1640 | Adjustable-Output, Switch-Mode Current Sources with Synchronous Rectifier |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1639ESE+ | 功能描述:DC/DC 开关控制器 High Speed Step Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1639ESE+T | 功能描述:DC/DC 开关控制器 High Speed Step Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1639ESE-T | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1639EVKIT | 功能描述:DC/DC 开关控制器 Evaluation Kit the MAX1639 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX163BCNG | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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