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MAX16946/MAX16947
Remote Antenna, Current-Sense and
LDO/Switches
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 12V, V GND = 0V, T A = -40 N C to +105 N C, unless otherwise noted. Typical values are at T A = T J = +25 N C.)
PARAMETER
Feedback Input Bias Current
Fixed 8.5V to LDO Mode
Feedback Threshold
Adjustable Output Voltage
Range
SYMBOL
I FB
V FB_TH
V OUT
CONDITIONS
V FB = 1.0V, LDO mode, T A = +25 N C
V FB = 1.0V, LDO mode, T A = +105 N C
Switching to LDO mode from fixed 8.5V
LDO mode with external resistive divider,
V IN > V OUT + V DROPOUT (Note 3)
MIN
-0.5
3.3
3.3
TYP
0
MAX
+0.5
4.2
15
UNITS
F A
V
V
FB Load Regulation
FB Line Regulation
V IN - V OUT R 2V, I OUT = 5mA to 100mA,
LDO mode
V IN - V OUT R 2V, I OUT = 6mA, LDO mode
-2
20
%
mV/V
Fixed 8.5V Output Voltage
V OUT_8.5V
I OUT = 5mA, LDO mode with internal
resistive divider, 9V P V IN P 18V
8.33
8.5
8.67
V
Power-Supply Rejection
Ratio
Startup Response Time
OUT Pulldown Resistor Value
COMP Power-Down Resistor
Value
PSRR
t ST
R OUT_OFF
R COMP_OFF
V IN - V OUT R 2V, f = 100Hz, LDO mode
SHDN rising to switch/LDO on, time
needed to charge C COMP = 0.1 F F
V SHDN = V GND , T A = +25 N C
V SHDN = V GND , T A = +25 N C
50
10
250
120
dB
ms
k I
k I
CURRENT-SENSE AMPLIFIER
V AOUT /(V IN - V SENS ), measured with
AOUT Gain
A V
V IN - V SENS = 20mV and 100mV,
25.35
26
26.65
V/V
4.5V < V IN < 18V
Current-Sense Amplifier
Input Voltage Range
V INR
Drop across the shunt resistor, normal
operation
0
125
mV
AOUT Zero-Current Output
Voltage
V AOUT_ZS
(V IN - V SENS ) = 0V, 4.5V < V IN < 18V
0.368
0.4
0.432
V
Maximum AOUT Voltage
AOUT Drive Capability
AOUT Leakage Current
SENS Leakage Current
V AOUT_FS
I AOUT
I AOUT_LEAK
I SENS_LEAK
(V IN - V SENS ) = 125mV, if V LIM = V REF
then V AOUT(MAX) = 3V
(V IN - V SENS ) = 30mV
V SHDN = V GND , T A = +25 N C
V SHDN = V GND , T A = +25 N C
1.0
2
3.65
2
V
mA
F A
F A
REFERENCE
REF Output Voltage
REF Undervoltage
V REF
V REF_UV
4.5V < V IN < 18V
V REF falling
2.94
2.18
3
3.06
2.72
V
V
REF Output Current
I REF
100
F A
REF Leakage Current
I REF_LEAK
V SHDN = V GND , T A = +25 N C
2
F A
FAILURE DETECTION COMPARATORS
Open-Load Comparator
Input Common-Mode Range
V OLT_CMR
(Note 2)
0.4
1.7
V
Open-Load Comparator
Offset Voltage
V OLT_OS
V OLT = 1.05V
-40
0
+40
mV
Maxim Integrated
3
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相关代理商/技术参数
MAX16946GEE/V+
功能描述:电源开关 IC - 配电 Remote Antenna Current-Sense
RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5
MAX16946GEE/V+T
功能描述:电源开关 IC - 配电 Remote Antenna Current-Sense
RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5
MAX16946GTE/V+
功能描述:电源开关 IC - 配电 Remote Antenna Current-Sense
RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5
MAX16946GTE/V+T
功能描述:电源开关 IC - 配电 Remote Antenna Current-Sense
RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5
MAX16946GUE/V+
功能描述:电源开关 IC - 配电 Remote Antenna Current-Sense RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5
MAX16946GUE/V+T
功能描述:电源开关 IC - 配电 Remote Antenna Current-Sense RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5
MAX16947GEE/V+
功能描述:电源开关 IC - 配电 Remote Antenna Current-Sense
RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5
MAX16947GEE/V+T
功能描述:电源开关 IC - 配电 Remote Antenna Current-Sense
RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5