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参数资料
| 型号： | MAX1637EEE |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/20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 |
Miniature, Low-Voltage,
Precision Step-Down Controller
____________________________________Typical Operating Characteristics (continued)
(V OUT = 3.3V, T A = +25°C, unless otherwise noted.)
OVERVOLTAGE-PROTECTION WAVEFORMS
TIME EXITING SHUTDOWN
(V OUT = 3.3V, I LOAD = 7A)
MAX1637-16
(V IN SHORTED TO V OUT
THROUGH A 0.5 Ω RESISTOR)
MAX1637-17
V OUT
V OUT
1V/div
100mV/div
5V
V DL
0V
0A
500 μ s/div
V SHDN
5V/div
10 μ s/div
-5A
-10A
INDUCTOR
CURRENT
______________________________________________________________Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NAME
CSH
CSL
FB
CC
REF
SHDN
SYNC
GND
V CC
V GG
DL
PGND
BST
DH
LX
SKIP
FUNCTION
High-Side Current-Sense Input
Low-Side Current-Sense Input
Feedback Input. Connect to center of resistor divider.
Compensation Pin. Connect a small capacitor to GND to set the integration time constant.
1.100V Reference Output. Capable of sourcing 50μA for external loads. Bypass with 0.22μF minimum.
Shutdown Control Input. Turns off entire IC. When low, reduces supply current below 0.5μA (typ). Drive with
logic input or connect to RC network between GND and V CC for automatic start-up.
Oscillator Frequency Select and Synchronization Input. Tie to V CC for 300kHz operation; tie to GND for
200kHz operation.
Analog Ground
Main Analog Supply-Voltage Input to the Chip. V CC powers the PWM controller, logic, and reference. Input
range is 3.15V to 5.5V. Bypass to GND with a 0.1μF capacitor close to the pin.
Gate-Drive and Boost-Circuit Power Supply. Can be driven from a supply other than V CC . If the same supply
is used by both V CC and V GG , isolate V CC from V GG with a 20 Ω resistor. Bypass to PGND with a 4.7μF
capacitor. V GG current = (Q G1 + Q G2 ) x f, where Q G is the MOSFET gate charge at V GS = V GG .
Low-Side Gate-Driver Output
Power Ground
Boost Capacitor Connection
High-Side Gate-Driver Output
Inductor Connection
Low-Noise Mode Control. Forces fixed-frequency PWM operation when high.
6
_______________________________________________________________________________________
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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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