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TSM1051 Fiches technique(PDF) 1 Page - STMicroelectronics

No de pièce TSM1051
Description  CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TSM1051 Fiches technique(HTML) 1 Page - STMicroelectronics

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s CONSTANT VOLTAGE AND CONSTANT
CURRENT CONTROL
s LOW VOLTAGE OPERATION
s PRECISION INTERNAL VOLTAGE
REFERENCE
s LOW EXTERNAL COMPONENT COUNT
s CURRENT SINK OUTPUT STAGE
s EASY COMPENSATION
s LOW AC MAINS VOLTAGE REJECTION
DESCRIPTION
TSM1051 is a highly integrated solution for SMPS
applications requiring CV (constant voltage) and
CC (constant current) mode.
TSM1051 integrates one voltage reference, two
operational amplifiers (with ORed outputs -
common collectors), and a current sensing circuit.
The
voltage
reference
combined
with
one
operational amplifier makes it an ideal voltage
controller, and the other low voltage reference
combined with the other operational amplifier
makes it an ideal current limiter for output low side
current sensing.
The current threshold is fixed, and precise.
The only external components are:
* a resistor bridge to be connected to the output of
the power supply (adapter, battery charger) to set
the voltage regulation by dividing the desired
output voltage to match the internal voltage
reference value.
* a sense resistor having a value and allowable
dissipation power which need to be chosen
according to the internal voltage threshold.
* optional compensation components (R and C).
TSM1051, housed in one of the smallest package
available, is ideal for space shrinked applications
such as adapters and battery chargers.
APPLICATIONS
s ADAPTERS
s BATTERY CHARGERS
ORDER CODE
L = Tiny Package (SOT23-6) - only available in Tape & Reel (LT)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
PIN CONNECTIONS (top view)
Part Number
Temperature
Range
Package
Marking
LD
TSM1051CLT
0 to 85°C
M801
TSM1051CD
0 to 85°C
M1051C
L
SOT23-6
(Plastic Package)
D
SO8
(Plastic Micro package)
1
2
34
5
6
Vctrl
Gnd
Vcc
Vsense
Out
Ictrl
1
2
3
45
6
Vctrl
Gnd
Vcc
Vsense
Out
Ictrl
Nc
Nc
SOT23-6
SO8
7
8
January 2002
TSM1051
CONSTANT VOLTAGE AND CONSTANT CURRENT
CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS


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