MAX1693/(MAX1693H)/MAX1694
USB Current-Limited Switches
with Fault Blanking
_______________________________________________________________________________________
5
Typical Operating Characteristics (continued)
(VIN = +5V, TA = +25°C, unless otherwise noted.)
4
3
1
2
2ms/div
MAX1693/4
toc10
MAX1693
CURRENT-LIMIT AND FAULT RESPONSE
CH1 = VIN, 200mV/div, AC-COUPLED; CH2 = VOUT,
5V/div; CH3 = VFAULT, 5V/div; CH4 = IOUT, 500mA/div
4
10
s/div
3
1
2
MAX1693
CURRENT-LIMIT RESPONSE
MAX1693/4
toc11
CH1 = VIN, 200mV/div, AC-COUPLED; CH2 = VOUT,
5V/div; CH3 = VFAULT, 5V/div; CH4 = IOUT, 1A/div
4
3
2
1
MAX1693
SWITCH TURN-ON TIME
MAX1693/4
toc12
CH1 = VOUT, 5V/div; CH2 = VON, 5V/div;
CH3 = VFAULT, 5V/div; CH4 = IOUT, 200mA/div
20
s/div
0
2
6
4
10
8
12
-40
0
20
-20
406080
100
FAULT-BLANKING TIMEOUT
vs. TEMPERATURE
MAX1693/4
toc09
TEMPERATURE (°C)
FAULT-BLANKING
TIMEOUT
(ms)
IOUT = 850mA
VIN = 3V OR 5V
4
3
2
1
MAX1693
SWITCH TURN-OFF TIME
MAX1693/4
toc13
CH1 = VOUT, 5V/div; CH2 = VON, 5V/div;
CH3 = VFAULT, 5V/div; CH4 = IOUT, 200mA/div
1
s/div
4
3
2
1
MAX1693
STARTUP TIME
(TYPICAL USB APPLICATION)
MAX1693/4
toc14
CH1 = VOUT, 5V/div; CH2 = VON, 5V/div;
CH3 = IOUT, 500mA/div; CH4 = VFAULT, 5V/div
CL = 150
F
RL = 15
1ms/div
FULL-CURRENT LIMIT
CHARGES CAPACITOR
RESISTOR
LOAD
CURRENT
FOLDBACK-
CURRENT LIMIT
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相关代理商/技术参数
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MAX16950AAUE/V+T 功能描述:DC/DC 开关控制器 2MHz Step-Down Controller 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
MAX16950BAUE/V+ 功能描述:DC/DC 开关控制器 2MHz Step-Down Controller 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
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