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FS312 데이터시트 PDF




Fortune Semiconductor에서 제조한 전자 부품 FS312은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 FS312 기능
기능 Lithium-ion/Polymer Battery Protection IC
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FS312 데이터시트, 핀배열, 회로
FS312
Lithium-ion/Polymer Battery Protection IC
General Description
FS312 is a series of lithium-ion and lithium-polymer
rechargeable battery protection ICs with high accurate
voltage detection and delay circuits.
These ICs are suitable for protection of single cell
lithium-ion or lithium polymer battery packs from over
charge, over discharge and over current.
Ordering Information
FS312 x
Serial code from AR to FR *
*: Refer to the product name list on next page.
Features
Low supply current
Normal Operation : 3.0μA typ. @VDD=3.9V
Power-down mode : 0.3μA max. @VDD=2.0V
Overcharge detection voltage
VOCU
4.0V~4.4V, Accuracy of ±25mV
Overcharge release voltage
VOCR
3.9V~4.2V Accuracy of ±50mV
Overdischarge detection voltage
VODL
2.2V~2.9V, Accuracy of ±80mV
Overdischarge release voltage
VODR
3.0V~3.2V Accuracy of ±80mV
Over current detection voltage
VOI1
VOI1
Short circuit detection voltage
VOI2
1.35V
Delay times are generated by an internal
circuit. (External capacitors are unnecessary.)
Charger detection voltage
-1.35V
Reset resistance for Over current protection
>500k
Wide supply voltage range
1.5 ~ 9.0V
Small package
SOT-23-6
Applications
Protection IC for One-Cell Lithium-Ion /
Lithium-Polymer Battery Pack
Fortune Semiconductor Co.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
1/14
TD-0404004 Rev. 1.4




FS312 pdf, 반도체, 판매, 대치품
FS312
Lithium-ion/Polymer Battery Protection IC
Absolute Maximum Ratings
(VSS=0V, Ta=25°C unless otherwise specified)
Item
Symbol
Rating
Unit
Input voltage between VDD and VSS *
VDD
VSS-0.3 to VSS+12
V
OC output pin voltage
OD output pin voltage
CSI input pin voltage
Operating Temperature Range
Storage Temperature Range
VOC
VOD
VCSI
TOP
TST
VDD-26 to VDD+0.3
VSS-0.3 to VDD+0.3
VDD-26 to VDD+0.3
-40 to +85
-40 to +125
V
V
V
°C
°C
Note: FS312 contains a circuit that will protect it from static discharge; but please take special care that no
excessive static electricity or voltage which exceeds the limit of the protection circuit will be applied to it.
* Pulse (μsec) noise exceeding the above input voltage (VSS+12V) may cause damage to the IC.
Fortune Semiconductor Co.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
4/14
TD-0404004 Rev. 1.4

4페이지










FS312 전자부품, 판매, 대치품
FS312
Lithium-ion/Polymer Battery Protection IC
Description of Operation
1. Normal Condition
If VODL<VDD<VOCU and VCH<VCSI<VOI1, M1 and M2 are both turned on. The charging and
discharging processes can be operated normally.
2. Overcharge Detection
If the battery voltage detected from VDD reaches VOCU, charging from a charger is inhibited for
overcharge protection. When VDD is larger than VOCU over a delay time of TOC, M2 will be turned
off.
3. Release of Overcharge Condition
There are two ways to return to normal condition from overcharge condition.
1) When the battery is self discharging and VDD<VOCR occurs, M2 will be turned on and back to
normal condition.
2) Remove the charger and connect FS312 to a load, the discharging current will flow through the
parasitic diode of M2. While VOCR<VDD<VOCU and VCSI>VOI1 occurs, M2 will be turned on
and back to normal condition.
4. Overdischarge Detection
When the battery voltage falls below the overdischarge detection voltage (VODL) during discharging
condition over a delay time of TOD, M1 will be turned off. In the meanwhile, CSI is pulled up to VDD by
way of internal resistance. If VCSI>VOI2, FS312 will enter into power-down mode. (Its current
consumption is lower than 0.3μA.)
5. Release of Power-Down mode
A charger is connected while the battery remains in Power-down mode. If VCH<VCSI<VOI2 and
VDD<VODR occurs, M1 is still be off but FS312 will release power-down mode. When VDD>VODR
occurs, M1 will be turned on and back to normal condition.
6. Charger Detection
While connecting to a charger after entering into power-down mode, then if VCSI<VCH, M1 will be
turned on when VDD>VODL and the system will back to normal condition.
7. Abnormal Charge Current Condition
When a charger is connected to the battery system in normal condition, then if VCSI<VCH occurs
through a delay time longer than TOC (delay time of overcharge detection), M2 will be turned off to
stop this charging status.
Fortune Semiconductor Co.
http://www.fsc.com.tw
TEL : +886-2-2809-4742
FAX: +886-2-2809-4874
7/14
TD-0404004 Rev. 1.4

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