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| 型号： | MAX16946GTE/V+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/21页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO/SWITCH ADJ 16TQFN |
| 其它有关文件： | Automotive Product Guide |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 应用： | 汽车系统，远程电源 |
| 电流 - 电源： | 2.1mA |
| 电源电压： | 4.5 V ~ 18 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（4x4） |
| 包装： | 管件 |
EVALUATION KIT AVAILABLE
MAX16946/MAX16947
Remote Antenna, Current-Sense and
LDO/Switches
General Description
The MAX16946/MAX16947 high-voltage, high-side, cur-
rent-sense LDO/switches feature internal current limiting
to prevent system damage due to fault conditions. The
MAX16946 provides a fixed regulated 8.5V output volt-
age or an adjustable 3.3V to 15V output voltage. The
MAX16946 can also be configured as a switch, while
the MAX16947 is only available as a switch. The input
voltage range for both devices extends from 4.5V to 18V
(45V tolerant), making the devices ideal for providing
phantom power to remote radio-frequency low-noise
amplifiers (LNAs) in automotive applications.
The devices monitor the load current and provide an
analog output voltage proportional to the sensed load
current. Accurate internal current limit protects the input
supply against both overload and short-circuit condi-
tions. Two open-drain fault indicator outputs indicate to
the microprocessor when a short circuit, an open-load
condition, or a short-to-battery condition exists. An over-
temperature shutdown is also indicated by means of the
current-sense amplifier’s output voltage.
A fault-blanking feature allows the devices to ignore
momentary faults such as those caused by the charg-
ing of capacitive loads during hot-swapping, preventing
false alarms to the system. The devices feature short-
Features
S Switch Phantom Power-On/Off Under μC Control
S Precision Adjustable Current Limit
300mA (max), T A = +105 N C
500mA (max), T A = +85 N C (MAX16946 in SW
Mode Only)
S Regulated Output Voltage (MAX16946)—8.5V
Fixed or Adjustable Between 3.3V and 15V
S Current Measurement Analog Voltage Output
S Detect Open-Load and Short-Circuit Conditions
S Provide Open-Drain Fault Signals ( SC and OL )
S Overcurrent Blanking During Startup
S Thermal Shutdown
S AEC-Q100 Qualified
S -40 N C to +105 N C Operating Temperature Range
Applications
Remote LNA Phantom Power
Automotive Safety and Infotainment
Automotive Remote Module Power
Functional Diagram
IN
to-battery protection to latch off the internal LDO/pass
switch during a short-to-battery event. During a thermal
overload, the devices reduce power dissipation by going
into thermal shutdown. They include an active-low, high-
voltage-compatible shutdown input to place them in low-
SENS
HIGH
VOLTAGE
A V =
26V/V
CHARGE PUMP AND GATE DRIVER
CURRENT
LIMIT COMP
OUT
FB
(GND)
power shutdown mode.
The MAX16946 is available in thermally enhanced, 16-pin
COMP
LIM
TQFN-EP and QSOP-EP packages. The MAX16947 is avail-
able in a 16-pin QSOP package. Both devices operate over
the -40 N C to +105 N C temperature range.
AOUT
BUFFER
SHORT-TO
BATTERY
COMP
SC COMP
SC
Ordering Information
SC REF
PART
MAX16946 GEE/V+
MAX16946GTE/V+
PIN-PACKAGE
16 QSOP-EP*
16 TQFN-EP*
OUTPUT
Switch or LDO
Switch or LDO
REVERSE-
CURRENT
COMP
REVERSE
CURRENT REF
LOGIC
TIMER
OSCILLATOR
MAX16946
MAX16947
OL COMP
OL
MAX16947 GEE/V+**
16 QSOP
Switch
SHDN
OLT
Note: All devices are specified over the -40°C to +105°C
operating temperature range.
/V Denotes an automotive qualified part.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
REG
5V
REGULATOR
ULVO +
REFUV
OVLO
BANDGAP
AND
THERMAL
SHUTDOWN
BUFFER
REF
* EP = Exposed pad.
** Future product—contact factory for availability.
GND
IN
REF
() MAX16947
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-5575; Rev 2; 10/13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| MAX16948AGEE/V+ | 制造商:Maxim Integrated Products 功能描述:AUTOMOTIVE DUAL REMOTE ANTENNA CURRENT-SENSE LDO/SWITCH - Rail/Tube |
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