SA45141 SILAN | Alldatasheet
Document overview
- Manufacturer or author: wangwenjian
- PDF pages: 9
Technical content
THREE OR FOUR-CELL LI+ BATTERY PROTECTION CIRCUIT SSOP-20-225-0.65
DESCRIPTION
The SA45141 is a three- or four-cel l Lithium-Ion Batteries protection circuit. SA45141 protects for Lithium-Ion Batteries. It has functions below: Overcharge detection, Overdischarge detection, Overcurrent detection. When the Lithium-Ion Batteri es is in state of overcharge, overdischarge and overcurrent. The IC turns off and on the external MOSFET to protect the batteries.
FEATURES
- Low current consumption -- Overcharge: 55μA (VCELL=4.4V CON=0V) -- Normal: 27μA (VCELL=3.5V CON=0V) -- Overdischarge: 2μA (VCELL=1.8V CON=0V) -- Overdischarge: 0.1μA Max(VCELL=1.0V CON=0V) * Overcharge detection voltage: two types (4.350±0.025V, 4.250±0.025V) *Overcharge detection hysteresis voltage: two types (200±60mV, 8±8mV) * Overdischarge detection voltage: three types(2.3±0.1V, 2.6±0.2V , 2.9±0.1V) * Overdischarge release voltage: two types (3.0±0.15V, 3.0±0.20V) * Overcurrent detection voltage: two types(150±15mV,200±15mV)
APPLICATIONS
- 3-cell or 4-cell lithium-ion batteries * Notebook PC * Electric bicycle * Electric tools
ORDERING INFORMATION
（V） Overcharge detect hysteresis voltage （mV） Overdis- charge detect voltage （V） Overdis- charge release voltage （V） Overcurrent detect voltage （mV） SA45141SH SSOP-20-225-0.65 HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.5 2009.06.05 Http: //www.silan.com.cn Page 1 of 10
Characteristics Symbol Ratings Unit Supply Voltage VCC max -0.3~24 V OV Pin Voltage VOV max -0.3~24 V SEL Pin Voltage VSEL max -0.3~24 V CON Pin Voltage VCON max -0.3~24 V Allowable Dissipation Pd 300 mW Storage Temperature Range Tstg -40~125 °C Operating Temperature Range Tamb -20~70 °C
ELECTRICAL CHARACTERISTICS
(Unless otherwise stated, Tamb=25°C, VCC=V4+V3+V2+V1, VCELL=3.5, CON=GND, SEL=VCC) Characteristics Symbol Test conditions Min. Typ. Max. Unit SA45141SC SA45141SD SA45141SE 4.325 4.350 4.375 Overcharge Detection Voltage VU Tamb= 0°C ~50°C SA45141SH 4.225 4.250 4.275 V HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.5 2009.06.05 Http: //www.silan.com.cn Page 2 of 10
HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.5 2009.06.05 Http: //www.silan.com.cn Page 3 of 10 Characteristics Symbol Test conditions Min. Typ. Max. Unit SA45141SC,SA45141SD ,SA45141SE 140 200 260 Overcharge Detection Hysteresis Voltage ΔVU SA45141SH -- 8 16 mV SA45141SC 2.20 2.30 2.40 SA45141SD 2.40 2.60 2.80 Overdischarge Detection Voltage VD SA45141SE ,SA45141SH 2.80 2.90 3.00 V SA45141SC ,SA45141SE , SA45141SH 2.85 3.00 3.15 Overdischarge Release Voltage VDF SA45141SD 2.80 3.00 3.20 V SA45141SC 0.45 0.70 0.95 SA45141SD 0.00 0.40 0.8 Overdischarge Detection Hysteresis Voltage ΔVD SA45141SE,SA45141SH -- 0.10 0.35 V SA45141SC,SA45141SD 135 150 165 Overcurrent Detection Voltage VOC SA45141SE,SA45141SH 185 200 215 mV Overcurrent Detection Hysteresis Voltage ΔVOC -- 20 40 mV Overcurrent Release Load release: more than 5MΩ Consumption Current (VCC pin) 1 ICC1 VCELL=4.4V -- 55 110 μA Consumption Current (VCC pin) 2 ICC2 VCELL=3.5V -- 27 50 μA Consumption Current (VCC pin) 3 ICC3 VCELL=1.8V -- 2 4 μA Consumption Current(VCC pin) 4 ICC4 VCELL=3.5V CON= VCC -- 12 20 μA Consumption Current (VCC pin) 5 ICC5 VCELL=1.8V CON=VCC -- 1 2 μA Consumption Current (V4 pin) 1 IV41 VCELL=4.4V -- 10 20 μA Consumption Current (V4 pin) 2 IV42 VCELL=3.5V -- 8 15 μA Consumption Current (V4 pin) 3 IV43 VCELL=1.8V -- 2.5 5.0 μA V1 Pin Input Current IV1 VCELL=3.5V -0.3 0 0.3 μA V2 Pin Input Current IV2 VCELL=3.5V -0.3 0 0.3 μA V3 Pin Input Current IV3 VCELL=3.5V -0.3 0 0.3 μA Overcharge Detection dead time tOV COV=0.1μF 0.5 1.0 1.5 s Overdischarge Detection dead time tCDC CDC=0.1μF 0.5 1.0 1.5 s Overcurrent Detection dead time 1 tCOL1 COL=0.001μF 5 10 15 ms Overcurrent Detection dead time 2 tCOL2 COL=0.001μF, VCC-CS>1.0V -- 1.5 3.0 ms Overcurrent Detection dead time 3 tCOL3 COL=0.001μF 5 10 15 ms DCHG Pin Source Current ISODCH VCELL=1.8V, SW:A VDCHG=VCC-0.8V 20 -- -- μA DCHG Pin Sink Current DCHG ISIDCH VCELL=3.5V, SW:A VDCHG= 0.8V 20 -- -- μA DCHG Pin Output Voltage(High) VTHDCH VCC-VDCHG,ISO=20μA SW: B -- -- 0.8 V DCHG Pin Output Voltage(Low) VTHDCL VDCHG-GND, ISI=-20μA SW: B -- -- 0.8 V
Characteristics Symbol Test conditions Min. Typ. Max. Unit OV Pin Sink Current ISIOV VOV=0.4V 100 -- -- μA OV Pin Leak Current ILKOV VOV=24V -- -- 0.1 μA CON Pin Low Voltage VCONL DCHG=“HIGH” -- -- 0.4 V CON Pin High Voltage VCONH DCHG= “LOW” VCC-0.4 -- -- V CON Pin Current ICON VCELL=3.5V, CON=0.4V -- 1 2 μA SEL Pin Low Voltage VSELL 3 cells -- -- 0.4 V SEL Pin High Voltage VSELH 4 cells VCC-0.4 -- -- V SEL Pin Current ISEL VCELL=3.5V, SEL=0.4V -- 1 2 μA PIN CONFIGURATIONS PIN DESCRIPTION Pin no. Pin name I/O Description
1 OV O Overcharge detection output pin
2 NC -- Not connected
3 CS I Overcurrent detection input pin
4 NC -- Not connected
5 DCHG O
Discharge control FET drive output pin Normal state: DCHG=Low; Overdischarge state: DCHG=High
6 NC -- Not connected
7 CDC -- Overdischarge detection dead time setting pin
8 COL -- Overcurrent detection dead time setting pin
9 COV -- Overcharge detection dead time setting pin
10 GND -- Ground
11 SEL I 3 or 4 cell select switch pin
SEL=V1 or GND:3 cell ; SEL=Vcc:4 cell
12 NC -- Not connected
HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.5 2009.06.05 Http: //www.silan.com.cn Page 4 of 10
HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.5 2009.06.05 Http: //www.silan.com.cn Page 5 of 10 Pin no. Pin name I/O Description
13 CON I
CON=low: DCHG=low, normal ; CON=high: DCHG=high, discharge prohibited
14 NC -- Not connected
15 V1 I V1 cell positive electrode side ,V2 cell negative electrode side
16 V2 I V2 cell positive electrode side ,V3 cell negative electrode side
17 V3 I V3 cell positive electrode side ,V4 cell negative electrode side
18 V4 I V4cell positive electrode side
19 NC -- Not connected
20 VCC -- Power supply input pin
This IC is a lithium-ion batteries (3-cell or 4-cell) prot ection IC. It has functions below: Overcharge detection, Overdischarge detection, Overcurrent det ection. It controls the batteries c harging or discharging by control the external MOSFET off and on. 1. Overcharge mode The battery voltage of either 3 cell batteries or 4 cell batteries goes above overcharge detection voltage. The IC shuts down the charging loop. Dead time can be set by connecting a capacitor. 2. Normal mode When the battery voltage of both 3 cell batteries and 4 cell batteries are above overdischarge detection voltage and below overcharge detection voltage, it can realize the normal charging and discharging function. 3. Overdischarge mode The battery voltage of either 3 cell batteries or 4 cell batteries drops below overdischarge detection voltage. The IC shuts down the discharging loop. Dead time of overdischarge detection can be set by connecting a capacitor. 4. Overcurrent mode The voltage between CS-Vcc goes above overcurrent detec tion voltage during discharge. The IC shuts down the discharging loop. 5. Discharge FET ON/OFF pin CON CON=low: DCHG=low, normal; CON=high: DCHG=high, discharge prohibited.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.5 2009.06.05 Http: //www.silan.com.cn Page 6 of 10
HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.5 2009.06.05 Http: //www.silan.com.cn Page 7 of 10
TYPICAL APPLICATION CIRCUIT Note:The circuit and parameters are reference only, please set the parameters of the real application circuit based on the real test . HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.5 2009.06.05 Http: //www.silan.com.cn Page 8 of 10
SSOP-20-225-0.65 Unit：mm Disclaimer:
- Silan reserves the right to make changes to the information herein for the improvement of the design and performance without further notice!
- All semiconductor products malfunction or fail with some probability under special conditions. When using Silan products in system design or complete machine manufacturing, it is the responsibility of the buyer to comply with the safety standards strictly and take essential measures to avoid situations in which a malfunction or failure of such Silan products could cause loss of body injury or damage to property.
- Silan will supply the best possible product for customers! HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.5 2009.06.05 Http: //www.silan.com.cn Page 9 of 10