參數(shù)資料
型號(hào)： MAX1637
廠商： Maxim Integrated Products, Inc.
英文描述： Miniature, Low-Voltage, Precision Step-Down Controller
中文描述： 微型、低電壓、高精度降壓型控制器
文件頁(yè)數(shù)： 1/20頁(yè)
文件大?。?/td> 211K
代理商： MAX1637
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.
General Desc ription
The MAX1637 synchronous, buck, switch-mode power-
supply controller generates the CPU supply voltage in
battery-powered systems. The MAX1637 is a stripped-
down version of the MAX1636 in a smaller 16-pin QSOP
package. The MAX1637 is intended to be powered sep-
arately from the battery by an external bias supply (typi-
cally the +5V system supply) in applications where the
battery exceeds 5.5V. The MAX1637 achieves excellent
DC and AC output voltage accuracy. This device can
operate from a low input voltage (3.15V) and delivers the
excellent load-transient response needed by upcoming
generations of dynamic-clock CPUs.
Using synchronous rectification, the MAX1637 achieves
up to 95% efficiency. Efficiency is greater than 80%
over a 1000:1 load-current range, which extends bat-
tery life in system-suspend or standby mode. Excellent
dynamic response corrects output load transients
caused by the latest dynamic-clock CPUs within five
300kHz clock cycles. Powerful 1A on-board gate driv-
ers ensure fast external N-channel MOSFET switching.
The MAX1637 features a logic-controlled and synchro-
nizable, fixed-frequency, pulse-width-modulation
(PWM) operating mode. This reduces noise and RF
interference in sensitive mobile-communications and
pen-entry applications. Asserting the
SKIP
pin enables
fixed-frequency mode, for lowest noise under all load
conditions. For a stand-alone device that includes a
+5V VL linear regulator and low-dropout capabilities,
refer to the MAX1636 data sheet.
________________________Applic ations
Notebook Computers
Handy-Terminals, PDAs
Subnotebook Computers
____________________________Features
o
±2% DC Accuracy
o
0.1% (typ) DC Load Regulation
o
Adjustable Switching Frequency to 350kHz
o
Idle Mode Pulse-Skipping Operation
o
1.10V to 5.5V Adjustable Output Voltage
o
3.15V Minimum IC Supply Voltage (at V
CC
pin)
o
Internal Digital Soft-Start
o
1.1V ±2% Reference Output
o
1μA Total Shutdown Current
o
Output Overvoltage Crowbar Protection
o
Output Undervoltage Shutdown (foldback)
o
Tiny 16-Pin QSOP Package
M
Miniature, Low-Voltage,
Prec ision S tep-Down Controller
________________________________________________________________ Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
CSH
SKIP
LX
DH
BST
PGND
DL
V
GG
V
CC
TOP VIEW
MAX1637
QSOP
CSL
FB
SHDN
CC
REF
SYNC
GND
__________________Pin Configuration
__________Typic al Operating Circ uit
19-1321; Rev 1; 2/98
PART
MAX1637EEE
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
16 QSOP
EVALUATION KIT
AVAILABLE
______________Ordering Information
Idle Mode is a trademark of Maxim Integrated Products.
MAX1637
SHDN
GND
V
BATT
V
BIAS
DL
PGND
LX
DH
V
CC
V
GG
BST
CSH
CSL
FB
SKIP
SYNC
REF
CC
OUTPUT
相關(guān)PDF資料
PDF描述
MAX1637EEE Miniature, Low-Voltage, Precision Step-Down Controller
MAX1638 High-Speed Step-Down Controller with Synchronous Rectification for CPU Power
MAX1638EAG High-Speed Step-Down Controller with Synchronous Rectification for CPU Power
MAX1638EEG
MAX1666SEEE Advanced Lithium-Ion Battery-Pack Protector
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1637EEE 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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(fēng)格: 封裝 / 箱體:CPAK
MAX1637EEE+ 功能描述:DC/DC 開(kāi)關(guān)控制器 Mini Precision Step Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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(fēng)格: 封裝 / 箱體:CPAK
MAX1637EEE+T 功能描述:DC/DC 開(kāi)關(guān)控制器 Mini Precision Step Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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(fēng)格: 封裝 / 箱體:CPAK
MAX1637EEE-T 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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(fēng)格: 封裝 / 箱體:CPAK
MAX1637EVKIT 制造商:Maxim Integrated Products 功能描述:MINIATURE, LOW-VOLTAGE, PRECISION STEP-DOWN C - Bulk
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