TSC888 STMicroelectronics, TSC888 Datasheet - Page 2

• Manufacturer Part Number: TSC888
• Description: Low cost high-side current sense amplifier
• Manufacturer: STMicroelectronics

Specifications of TSC888

• Wide Common-mode Operating Range: 2.8 V to 24 V
• Wide Supply Voltage Range: 4 to 24 V
• Low Current Consumption: ICC max = 1 mA
• Internally Fixed Gain: 20 V/V, 50 V/V or 100 V/V

Application schematics and pin description
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Application schematics and pin description
The TSC888 high-side current-sense amplifier features a 2.8 V to 24 V input common-mode
range that is independent of supply voltage. The main advantage of this feature is to allow
high-side current sensing at voltages much greater than the supply voltage (V
TSC888 can therefore be supplied by a 5 Vsb line and monitor a 3.3 V, 5 V or 12 V power
line. Considering the wide supply voltage operating range (4 V to 24 V) another option
available in most cases is to connect the V
Figure 1.
Table 1
cover page and in
Table 1.
Symbol
Gnd
Vcc
Out
Vm
Vp
controller
controller
Stand-by
PWM
PWM
Main
describes the function of each pin. Their position is shown in the illustration on the
Application schematics
Pin description
Analog output
Power supply
Power supply
Analog input
Analog input
Figure 1
Type
above.
The out voltage is proportional to the magnitude of the sense
voltage V
Ground line.
Positive power supply line.
Connection for the external sense resistor. The measured current
enters the shunt on the V
Connection for the external sense resistor. The measured current
exits the shunt on the V
p
5Vsb
-V
m
CC
.
pin to the V
Vcc
Vp
m
V
p
side.
sense
side.
Function
p
pin.
Gnd
Vm
I
load
TSC888
Out
12V, 5V or 3.3V line
V
CC
Monitoring
out
device
). The
=V
sense
TSC888
.A
v