MPQ8112/MPQ8112A – 60V, HIGH-SIDE, CURRENT-SENSE AMPLIFIER
PIN FUNCTIONS
Pin #
Name Description
Output. The MPQ8112 does not require an external resistor, so the OUT pin can be left
floating. For the MPQ8112A, connect an external resistor to OUT to set the gain.
1
OUT
RG2
Negative gain resistor. For the MPQ8112, connect RG2 directly to the load side of the
current-sense resistor, as closely as possible. For the MPQ8112A, connect RG2 to the load
side of the current-sense resistor through a gain resistor (RG2). RG2 should be below 4kΩ to
obtain high current-sense accuracy. It is recommended for RG2 and RG1 to equal 1kΩ.
2
3
Positive gain resistor. For the MPQ8112, connect RG1 directly to the power side of the
current-sense resistor, as closely as possible. For the MPQ8112A, connect RG1 to the
power side of the current-sense resistor through a gain resistor (RG1). RG1 should be below
4kΩ to obtain the high current-sense accuracy. It is recommended for RG1 to equal 1kΩ.
RG1
Power input. Place a bypass capacitor between VCC and GND, as close as possible. A
0.1µF to 1µF low-ESR ceramic capacitor is recommended.
4
5
VCC
GND
Ground.
Power supply for internal trim and control block. Pull V5 above its 2V upper threshold to
enable the part. Pull V5 below its 1.9V lower threshold to disable the part. The power
source connected to V5 must be able to output a current above 1mA. Place a bypass
capacitor between V5 and GND. A 10nF to 100nF low-ESR ceramic capacitor is
recommended.
6
V5
Thermal Resistance (5)
TSOT23-6L............................220.... 110.. °C/W
θJA
θJC
(1)
ABSOLUTE MAXIMUM RATINGS
VCC to GND ..................................-0.3V to +62V
RG1, RG2 to GND ......................... -0.3V to VCC
VCC to RG1, RG2 .........................-0.3V to +62V
OUT to GND ............-0.3V to +22V (MPQ8112)
OUT to GND ............ -0.3V to VCC (MPQ8112A)
Differential input voltage (VRG1 - VRG2)... ±400mV
V5 to GND .....................................-0.3V to +6V
Max junction temperature .........................150°C
Storage temperature................ -65°C to +150°C
Continuous power dissipation (TA = 25°C) (2)
TSOT23-6L.............................................. 0.57W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature, TJ (MAX), the junction-to-
ambient thermal resistance, θJA, and the ambient temperature,
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX) - TA) / θJA. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) These devices are ESD-sensitive. It is recommended to
handle them with precaution.
4) It is possible to operate the devices at junction temperatures
above 125°C. Contact an MPS FAE for details.
5) The value of θJA given in this table is only valid for comparison
with other packages and cannot be used for design purposes.
These values were calculated in accordance with JESD51-7,
and simulated on a specified JEDEC board. They do not
represent the performance obtained in an actual application.
ESD Ratings (3)
Human body model (HBM).........................±2kV
Charged device model (CDM)..................±750V
Recommended Operating Conditions
Vcc to GND......................................2.7V to 60V
RG1, RG2 to GND ...............................0V to VCC
VCC to RG1, RG2 ...............................0V to 60V
OUT to GND ................... 0V to 20V (MPQ8112)
OUT to GND .......0V to VCC - 0.7V (MPQ8112A)
Operating junction temp (TJ)..............................
………………………………...-40°C to +125°C (4)
MPQ8112/MPQ8112A Rev. 1.0
7/7/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.
www.MonolithicPower.com
4
5秒后页面跳转
资料手册解读：UC3842参数和管脚说明
一文带你了解无源晶振的负载电容为何要加两颗谐振电容CL1和CL2
玻璃管保险丝与陶瓷管保险丝：区别与替代性探讨
PCF8574资料解读：主要参数分析、引脚说明
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
