sc121na Silan, sc121na Datasheet

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sc121na

Manufacturer Part Number
sc121na
Description
Li+ Battery Protection Circuit
Manufacturer
Silan
Datasheet
BLOCK DIAGRAM
HANGZHOU MICROELECTRONICS CO.,LTD
Http:// www.silan.com.cn
LI+ BATTERY PROTECTION CIRCUIT
DESCRIPTION
battery against damage from over charge, over discharge, and over
current. It contains high accurate voltage detection and delay circuits.
FEATURES
ORDERING INFORMATION
SC121 is a LI+ battery protection circuit. It is suitable for protecting LI+
SC121NA
SC121N
Device
* Low supply current
* Over-charge detect 4.28V, Over-charge release 4.10V.
* Over-discharge detect 2.50V, Over-discharge release 2.90V.
* Over-current detect 0.15V, Short Current detect 1.00V.
* Overcharge/over-discharge/over-current detection delay
* Charger detection
* Reset resistance for over current protection
* Wide supply voltage range
* Small package
SOT-23-6
SOT-23-6
Package
0 V Battery Charge Function
Unavailable
Available
APPLICATIONS
* Protection IC for One-Cell LI+
Battery Pack
REV:1.4
Page 1 of 10
SC121
2008.06.25

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sc121na Summary of contents

Page 1

... Overcharge/over-discharge/over-current detection delay * Charger detection * Reset resistance for over current protection * Wide supply voltage range * Small package ORDERING INFORMATION Device Package SC121N SOT-23-6 SC121NA SOT-23-6 BLOCK DIAGRAM HANGZHOU MICROELECTRONICS CO.,LTD Http:// www.silan.com. Battery Charge Function Unavailable Available SC121 APPLICATIONS * Protection IC for One-Cell LI+ Battery Pack REV:1 ...

Page 2

... OCR V ODL V ODR V OI1 V V =3.6V OI2 =3.6V short =3.6V~4. =3.6V~2. =3.6V OI1 =3.6V OI2 oh1 V ol1 V V oh2 V ol2 V SC121NA OCHA SC121 Unit + + °C °C Min. Typ. Max. Unit 1.8 8.0 V μA 3.0 6.0 μA 0.3 0.6 4.24 4.28 4.32 V 4.05 4.10 4.15 V 2.40 2.50 2.60 V 2.80 2.90 3.00 V 0.13 0.15 0.17 V ...

Page 3

... CSI is pulled way of internal resistor RCSID Power-down mode. (Its current consumption is lower than 0.3μA). HANGZHOU MICROELECTRONICS CO.,LTD Http:// www.silan.com.cn Description FET gate connection pin for discharge control. Input pin for current sense, charger detect. FET gate connection pin for charge control. ...

Page 4

... Note: when a battery is connected to a protection IC for the first time, the IC may not enter the normal status (not dischargeable status). If this occurs, set the CSI pin voltage equal to the V V pins or connect a charger) to enter the normal status. SS HANGZHOU MICROELECTRONICS CO.,LTD Http:// www.silan.com.cn >V occurs turned on and back to DD ODR <V ...

Page 5

... TIMING DIAGRAM Overcharge Status →Self Discharging →Normal Status Overcharge Status→Load Discharging→Normal Status HANGZHOU MICROELECTRONICS CO.,LTD Http:// www.silan.com.cn SC121 REV:1.4 2008.06.25 Page ...

Page 6

... Overcharge Status→Charging By Charger→Normal Status Overcharge Status→Abnormal Status→Normal Status HANGZHOU MICROELECTRONICS CO.,LTD Http:// www.silan.com.cn SC121 REV:1.4 2008.06.25 Page ...

Page 7

... Over Current Status→Normal Status STATE DIAGRAM OF OPERATION HANGZHOU MICROELECTRONICS CO.,LTD Http:// www.silan.com.cn SC121 REV:1.4 2008.06.25 Page ...

Page 8

... TYPICAL APPLICATION CIRCUITS Note: The circuit and parameters are reference only, please set the parameters of the real application circuit based on the real test. PACKAGE OUTLINE SOT-23-6 HANGZHOU MICROELECTRONICS CO.,LTD Http:// www.silan.com.cn SC121 UNIT: mm REV:1.4 2008.06.25 Page ...

Page 9

... All tools used during assembly, including soldering tools and solder baths, must be earthed. • MOS devices should be packed for dispatch in antistatic/conductive containers. Note:Silan reserves the right to make changes without notice in this specification for the improvement of the design and performance. Silan will supply the best possible product for customers. ...

Page 10

... Modify the “FEATURES” and “TYPICAL APPLICATION CIRCUITS” 2008.05.08 1.2 Modify the “ELECTRICAL CHARACTERISTICS” 2008.06.12 1.3 Modify the “ABSOLUTE MAXIMUM RATING” 2008.06.25 1.4 Modify the “TYPICAL APPLICATION CIRCUITS” HANGZHOU MICROELECTRONICS CO.,LTD Http:// www.silan.com.cn Description REV:1.4 SC121 Page 2008.06.25 Page ...

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