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參數(shù)資料
| 型號： | MAX1638EEG |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 中文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | 0.150 INCH, 0.025 INCH PITCH, QSOP-24 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 149K |
| 代理商： | MAX1638EEG |
_______________General Desc ription
The MAX1638 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 1.3V
to 3.5V 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.
The MAX1638 is available in 24-pin SSOP and QSOP
(future package) packages, and offers additional fea-
tures such as a digitally programmable output;
adjustable transient response; and selectable 0.5%, 1%,
or 2% AC load regulation. Fast recovery from load tran-
sients is ensured by a GlitchCatcher current-boost cir-
cuit that eliminates delays caused by the buck inductor.
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.
________________________Applic ations
Pentium Pro, Pentium II, PowerPC, Alpha,
and K6 Systems
Workstations
Desktop Computers
LAN Servers
GTL Bus Termination
______________Ordering Information
____________________________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
Digitally Programmable Output from 1.3V to 3.5V
o
Current-Mode Control for Fast Transient
Response and Cycle-by-Cycle Current-Limit
Protection
o
Short-Circuit Protection with Foldback Current
Limiting
o
Glitch-Catcher Circuit for Fast Load-Transient
Response
o
Crowbar Overvoltage Protection
o
Power-Good (PWROK) Output
o
Digital Soft-Start
o
High-Current (2A) Drive Outputs
o
Complies with Intel VRM 8.2 Specification
M
High-S peed S tep-Down Controller with
S ync hronous Rec tific ation for CPU Power
________________________________________________________________ Maxim Integrated Products
1
19-1313; Rev 0; 11/97
PART
MAX1638EAG
MAX1638EEG*
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
24 SSOP
24 QSOP
__________Typic al Operating Circ uit
Pin Configuration appears at end of data sheet.
*Future product—contact factory for package availability.
Pentium Pro and Pentium II are trademarks of Intel Corp.
PowerPC is a trademark of IBM Corp.
Alpha is a trademark of Digital Equipment Corp.
K6 is a trademark of Advanced Micro Devices.
GlitchCatcher is a trademark of Maxim Integrated Products.
V
CC
AGND
REF
LG
FREQ
CC1
CC2
DL
PWROK
D0
D1
D2
D3
D4
LX
BST
DH
PGND
TOV
DD
CSH
OUTPUT
1.3V TO4.5V
INPUT
+5V
V
DD
CSL
FB
MAX1638
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
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1638VRMEVKIT | 功能描述:DC/DC 開關(guān)控制器 High-Speed Step-Down Controller with Synchronous Rectification for CPU Power RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1639ESE | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1639ESE+ | 功能描述:DC/DC 開關(guān)控制器 High Speed Step Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1639ESE+T | 功能描述:DC/DC 開關(guān)控制器 High Speed Step Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1639ESE-T | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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