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): 9/20頁(yè)
文件大?。?/td> 211K
代理商: MAX1637
M
Miniature, Low-Voltage,
Prec ision S tep-Down Controller
_______________________________________________________________________________________
9
The pulse-width-modulation (PWM) controller consists
of a multi-input PWM comparator, high-side and low-
side gate drivers, and logic. It uses a 200kHz/300kHz
synchronizable oscillator. The MAX1637 contains fault-
protection circuits that monitor the PWM output for
undervoltage and overvoltage. It includes a 1.100V pre-
cision reference. The circuit blocks are powered from
an internal IC power rail that receives power from V
CC
.
V
GG
provides direct power to the synchronous-switch
gate driver, but provides indirect power to the high-
side-switch gate driver via an external diode-capacitor
boost circuit.
REF
IC
POWER
200kHz
TO
300kHz
OSC
PWM
LOGIC
3.15V TO 5.5V
V
BATT
V
OUT
+
REF
SHDN
SYNC
V
CC
DL
PGND
LX
DH
BST
V
GG
SKIP
CSH
CSL
FB
CC
REF
GND
V
REF
+7%
V
REF
-30%
60kHz
LP FILTER
SHUTDOWN
CONTROL
1.1V
REF.
ERROR
INTEGRATOR
gm
+
-
+
-
+
-
+
-
+
MAX1637
OVERVOLTAGE
FAULT
UNDER-
VOLTAGE
FAULT
OFF
SLOPE
COMPENSATION
V
BIAS
Figure 2. Functional Diagram
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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
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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
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