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参数资料
| 型号： | MAX1637EEE |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 16-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| PWM 型： | 电流模式，混合 |
| 输出数： | 1 |
| 频率 - 最大： | 338kHz |
| 占空比： | 96% |
| 电源电压： | 3.15 V ~ 5.5 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
19-1321; Rev 2; 8/05
ATION
ILABLE
EVALU
AVA
KIT
Miniature, Low-Voltage,
Precision Step-Down Controller
General Description
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 battery 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.
____________________________Features
? ±2% DC Accuracy
? 0.1% (typ) DC Load Regulation
? Adjustable Switching Frequency to 350kHz
? Idle Mode? Pulse-Skipping Operation
? 1.10V to 5.5V Adjustable Output Voltage
? 3.15V Minimum IC Supply Voltage (at V CC pin)
? Internal Digital Soft-Start
? 1.1V ±2% Reference Output
? 1μA Total Shutdown Current
? Output Overvoltage Crowbar Protection
? Output Undervoltage Shutdown (foldback)
? Tiny 16-Pin QSOP Package
______________Ordering Information
The MAX1637 features a logic-controlled and synchro-
nizable, fixed-frequency, pulse-width-modulation (PWM)
operating mode. This reduces noise and RF interference
PART
MAX1637EEE
MAX1637EEE+
TEMP RANGE
40°C to +85°C
40°C to +85°C
PIN-PACKAGE
16 QSOP
16 QSOP
in sensitive mobile-communications and pen-entry appli-
cations. 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 regula-
tor and low-dropout capabilities, refer to the MAX1636
data sheet.
+ Denotes lead-free package.
__________Typical Operating Circuit
V BIAS V BATT
_________________________Applications
V CC
V GG
Notebook Computers
Handy-Terminals, PDAs
Subnotebook Computers
SHDN
__________________Pin Configuration
MAX1637
DH
BST
TOP VIEW
CSH 1
16 SKIP
LX
OUTPUT
CSL 2
FB 3
15 LX
14 DH
CC
DL
CC 4
REF 5
SHDN 6
SYNC 7
GND 8
MAX1637
13 BST
12 PGND
11 DL
10 V GG
V CC
9
REF
SKIP
SYNC
GND
PGND
CSH
CSL
FB
QSOP
A "+" SIGN WILL REPLACE THE FIRST PIN INDICATOR ON LEAD-FREE PACKAGES.
Idle Mode is a trademark of Maxim Integrated Products.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1637EEE+ | 功能描述:DC/DC 开关控制器 Mini Precision 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 |
| MAX1637EEE+T | 功能描述:DC/DC 开关控制器 Mini Precision 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 |
| MAX1637EEE-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 |
| MAX1637EVKIT | 制造商:Maxim Integrated Products 功能描述:MINIATURE, LOW-VOLTAGE, PRECISION STEP-DOWN C - Bulk |
| MAX1638BEAG | 制造商:MAX 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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