TSM101AIDT STMicroelectronics, TSM101AIDT Datasheet

IC CONTROLLER VOLT & CUR 8 SOIC

TSM101AIDT

Manufacturer Part Number
TSM101AIDT
Description
IC CONTROLLER VOLT & CUR 8 SOIC
Manufacturer
STMicroelectronics
Datasheet

Specifications of TSM101AIDT

Function
Charge Management
Battery Type
All Battery Types
Voltage - Supply
4.5 V ~ 32 V
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Number Of Outputs
1
Output Current
20 mA
Input Voltage
4.5 V to 32 V
Supply Current
2 mA
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 105 C
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-2331-2

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DESCRIPTION
The TSM101/TSM101A integrated circuit incorpo-
rates a high stability series band gap voltage refer-
ence, two ORed operational amplifiers and a cur-
rent source.
This IC compares the DC voltage and the current
level at the output of a switching power supply to
an internal reference. It provides a feedback
through an optocoupler to the PWM controller IC
in the primary side.
The controlled current generator can be used to
modify the level of current limitation by offsetting
the information coming from the current sensing
resistor.
APPLICATIONS
This circuit is designed to be used in battery
chargers with a constant voltage and a limited out-
put current.
It can be used in every types of application requir-
ing a precision voltage regulation and current limi-
tation.
Other applications include voltage supervisors,
over voltage protection...
ORDER CODE
N = Dual in Line Package (DIP)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
TSM101C/AC
TSM101I/AI
June 2001
Part Number
1.24V SERIES VOLTAGE REFERENCE
WITH 10mA OUTPUT CURRENT AND 1%
PRECISION (TSM101A)
TWO OPERATIONAL AMPLIFIERS WITH
ORED OUTPUT AND 1MHZ GAIN BAND-
WIDTH PRODUCT
BUILT-IN CURRENT GENERATOR WITH
ENABLE/DISABLE FUNCTION
4.5 TO 32V SUPPLY VOLTAGE RANGE
SO8 AND DIP8 PACKAGES
-40°C, +105°C
Temperature
-20°C, +80°C
Range
VOLTAGE AND CURRENT CONTROLLER
N
Package
D
PIN CONNECTIONS (top view)
(Plastic Micropackage)
(Plastic Package)
DIP8
SO8
N
D
TSM101/A
1/13

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TSM101AIDT Summary of contents

Page 1

SERIES VOLTAGE REFERENCE WITH 10mA OUTPUT CURRENT AND 1% PRECISION (TSM101A) TWO OPERATIONAL AMPLIFIERS WITH ORED OUTPUT AND 1MHZ GAIN BAND- WIDTH PRODUCT BUILT-IN CURRENT GENERATOR WITH ENABLE/DISABLE FUNCTION 4.5 TO 32V SUPPLY VOLTAGE RANGE SO8 AND DIP8 PACKAGES ...

Page 2

TSM101/A ABSOLUTE MAXIMUM RATINGS Symbol supply Voltage Output Current out P Power Dissipation Input Voltage in I Input Current out T Storage Temperature stg T Maximum Junction Temperature j T Thermal ...

Page 3

ELECTRICAL CHARACTERISTICS T = 25° 15V (unless otherwise specified) amb CC VOLTAGE REFERENCE : TSM101 Symbol Parameter Reference Voltage V ref I = 1mA 25°C amb out Temperature Stability min amb ...

Page 4

TSM101/A DESCRIPTION Name Pin Type V 1 OUTPUT ref V 7 INPUT rin C 5 INPUT rin C 3 INPUT rref C 2 INPUT sen OUTPUT 6 OUTPUT V 8 INPUT cc GND 4 INPUT 4/13 Function Voltage Reference Output ...

Page 5

A BATTERY CHARGER USING THE TSM101 This technical note shows how to use the TSM101 integrated circuit with a switching mode power supply (SMPS) to realize a battery charger. An example of realization of a 12V Nickel-cadmi- um battery charger ...

Page 6

TSM101/A Figure 2 : SMPS Using a TL431 as Voltage Controller The optocoupler current increases and tends to reduce the output voltage by the way of the PWM controller. By enabling the TSM101 current source (pin possible ...

Page 7

If pin 2 is connected to ground, the internal current source is enabled, the current measurement is off-setted by a voltage equal to : Vr4 = with Io = 1.4mA This can be used to lower the ...

Page 8

TSM101/A Figure Auxiliary Winding for TSM101 Power Supply 5.3. Higher Precision for the Voltage Control The voltage drop through the sense resistor R5 offsets the voltage measurement. In most battery charging applications, this offset is not taken ...

Page 9

An example of application where the charging current is different according to the charging phase. The following application includes a specific rec- ommendation which requires that the charging current should be fixed to Ich1 = 800mA in normal charging ...

Page 10

TSM101 integrates in the same 8 pin DIP or SO package one 1.24V precision voltage reference two operationnal amplifiers two diodes which impose a NOR function on the outputs of the operationnal amplifiers one current source which can be activated/ ...

Page 11

The current control is given by the choice of the voltage drop through the sense resistor R5 (to be linked to the nominal current of the application) and by the value of the sense resistor itself. For medium currents (< ...

Page 12

TSM101/A PACKAGE MECHANICAL DATA 8 PINS - PLASTIC DIP Dim. Min 0.51 B 1.15 b 0.356 b1 0.204 3.18 Z 12/13 Millimeters Typ. Max. 3.32 1.65 0.55 0.304 10.92 ...

Page 13

... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. © ...

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