TSM1051CD STMicroelectronics, TSM1051CD Datasheet

IC CONTROLLER CC/CV SMPS 8SOIC

TSM1051CD

Manufacturer Part Number
TSM1051CD
Description
IC CONTROLLER CC/CV SMPS 8SOIC
Manufacturer
STMicroelectronics
Datasheet

Specifications of TSM1051CD

Function
Charge Management
Battery Type
All Battery Types
Voltage - Supply
2.5 V ~ 12 V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Operating Supply Voltage
2.5 V to 12 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
497-4478-5
Features
Description
The device is is a highly integrated solution for
SMPS applications requiring CV (constant
voltage) and CC (constant current) mode.
It 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; the current sensing circuit and the
other operational amplifier make up the current
control loop.
Table 1.
February 2008
Constant voltage and constant current control
Low voltage operation
Precision internal voltage reference
Low external component count
Current sink output stage
Easy compensation
Low AC mains voltage rejection
Device summary
TSM1051CDT
TSM1051CLT
Order codes
TSM1051CD
Constant voltage and constant current controller
Rev 3
Package
SOT23-6
for battery chargers and adaptors
SO-8
SO-8
The only external components are:
Housed in one of the smallest package available,
it is ideal for space-shrunk applications such as
adaptors and battery chargers.
Applications
– A resistor divider to be connected to the
– A sense resistor having a value and
– Optional compensation components (RC).
Adaptors
Battery chargers
output of the power supply (adaptor, battery
charger) to set the voltage regulation by
dividing the desired output voltage to match
the internal voltage reference value.
allowable dissipation power which need to
be chosen according to the internal voltage
threshold.
SO-8
Tape and reel
Tape and reel
Packaging
TSM1051
Tube
SOT23-6
www.st.com
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TSM1051CD Summary of contents

Page 1

... Table 1. Device summary Order codes TSM1051CLT TSM1051CD TSM1051CDT February 2008 Constant voltage and constant current controller for battery chargers and adaptors The only external components are: – A resistor divider to be connected to the – A sense resistor having a value and – ...

Page 2

Contents Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

TSM1051 1 Description 1.1 Pin connection Figure 1. Pin connection (top view) 1.2 Pin description Table 2. Pin out Name SOT23 - 6 V ctrl Gnd Out 3 I ctrl V sense Pin n° Type SO-8 ...

Page 4

Description 1.3 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol V DC supply voltage CC V Input voltage I T Maximum junction temperature J 1.4 Thermal data Table 4. Thermal data Symbol R Thermal resistance junction ambient thJA 1.5 ...

Page 5

TSM1051 2 Electrical characteristics °C and V A Table 6. Electrical characteristics Symbol Total current consumption Total supply current - not taking the I CC output sinking current into account Voltage control loop Transconduction gain (Vctrl). sink ...

Page 6

Schematics 3 Schematics 3.1 Internal schematic Figure 2. Block diagram 3.2 Typical application circuit Figure 3. Typical adaptor or battery charger application using the device In the above application schematic, the device is used on the secondary side of a ...

Page 7

TSM1051 4 Typical electrical performance Figure 4. Vref vs ambient temperature Figure 6. Vsense pin input bias current vs ambient temperature Figure 8. Output short circuit current vs ambient temperature Typical electrical performance Figure 5. Vsense vs ambient temp. Figure ...

Page 8

Application information 5 Application information 5.1 Voltage and current control 5.1.1 Voltage control The voltage loop is controlled via a first transconductance operational amplifier, the voltage divider and the optocoupler which is directly connected to the ...

Page 9

TSM1051 Figure 10. Output voltage versus output current 5.2 Compensation The voltage-control trans-conductance operational amplifier can be fully compensated. Both of its output and negative input are directly accessible for external compensation components. An example of a suitable compensation network ...

Page 10

Application information This solution allow a costant current regulation till output goes Attention has to be payed to V Maximum Rating. Figure 11. Application circuit able to supply the device even with ...

Page 11

TSM1051 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the ...

Page 12

Package mechanical data Table 7. SOT23-6 mechanical data Dim θ Note: Dimensions per JEDEC MO178AB Figure 12. Package dimensions 12/15 mm. Min Typ Max 0.9 1.45 0 0.1 0.9 1.3 ...

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TSM1051 Table 8. SO-8 mechanical data Dim ddd Figure 13. Package dimensions mm. Min Typ Max 1.35 1.75 0.1 0.25 1.1 1.65 0.33 0.51 0.19 0.25 4.8 5 ...

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Revision history 7 Revision history Table 9. Document revision history Date 8-Jan-2002 18-Apr-2006 12-Feb-2008 14/15 Revision 1 Initial release. 2 New Template, few updates 3 Updated: Section 6: Package mechanical data on page 11 TSM1051 Changes ...

Page 15

... TSM1051 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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