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TSM105 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. TSM105
Description  CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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TSM105 Datasheet(HTML) 1 Page - STMicroelectronics

   
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s CONSTANT VOLTAGE AND CONSTANT
CURRENT CONTROL
s LOW VOLTAGE OPERATION
s PRECISION INTERNAL VOLTAGE REFER-
ENCE
s LOW EXTERNAL COMPONENT COUNT
s CURRENT SINK OUTPUT STAGE
s EASY COMPENSATION
s LOW AC MAINS VOLTAGE REJECTION
DESCRIPTION
TSM105 is a highly integrated solution for SMPS
applications requiring CV (constant voltage) and
CC (constant current) mode.
TSM105
integrates one voltage reference, two
operational amplifiers (with ORed outputs - com-
mon collectors), and a current sensing circuit.
The voltage reference combined with one opera-
tional amplifier makes it an ideal voltage control-
ler, 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 on the output of
the power supply (adapter, battery charger) to set
the voltage regulation by dividing the desired out-
put voltage to match the internal voltage reference
value.
* a sense resistor whose value and allowable dis-
sipation power need to be chosen according to the
internal voltage threshold.
* optional compensation components (R and C).
TSM105, 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 (SOT23-5) - 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
TSM105CLT
0 to 85°C
M105
TSM105CD
0 to 85°C
TSM105
L
SOT23-5
(Plastic Package)
D
SO8
(Plastic Micropackage)
1
2
34
5
Vctrl
Gnd
Vcc
Ictrl
Out
1
2
3
45
6
Vctrl
Gnd
Vcc
Nc
Out
Ictrl
Nc
Nc
SOT23-5
SO8
7
8
September 2001
TSM105
CONSTANT VOLTAGE AND CONSTANT CURRENT
CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS


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