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PDF SA45141 Data sheet ( Hoja de datos )
| Número de pieza | SA45141 | |
| Descripción | THREE OR FOUR-CELL LI+ BATTERY PROTECTION CIRCUIT | |
| Fabricantes | Silan Microelectronics | |
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SA45141
THREE OR FOUR-CELL LI+ BATTERY PROTECTION CIRCUIT
DESCRIPTION
The SA45141 is a three- or four-cell 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 Batteries is in state of overcharge,
overdischarge and overcurrent. The IC turns off and on the external
MOSFET to protect the batteries.
FEATURES
SSOP-20-225-0.65
* 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: two types(2.3±0.1V, 2.9±0.1V )
* Overdischarge release voltage: 3.0±0.15V
* 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
Device
Package
SA45141SC
SA45141SE
SA45141SH
SSOP-20-225-0.65
Overcharge
Overcharge
detect
detect voltage hysteresis
（V）
voltage
（mV）
4.350±0.025
4.350±0.025
200±60
200±60
4.250±0.025
8±8
Overdis-
charge
detect
voltage
（V）
2.3±0.1
2.9±0.1
2.9±0.1
Overdis-
charge
release
voltage
（V）
3.00±0.15
3.00±0.15
3.00±0.15
Overcurrent
detect
voltage
（mV）
150±15
200±15
200±15
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: //www.silan.com.cn
REV:1.4 2008.03.12
Page 1 of 10
1 page  
SA45141
(Continued)
Pin no. Pin name
I/O
10 GND
-- Ground
Description
11 SEL
12 NC
I 3 or 4 cell select switch pin
SEL=V1 or GND:3 cell ; SEL=Vcc:4 cell
-- Not connected
13 CON
Discharge FET ON/OFF pin
I CON=low: DCHG=low, normal ; CON=high: DCHG=high, discharge
14 NC
15 V1
16 V2
17 V3
18 V4
19 NC
20 VCC
prohibited
-- Not connected
I V1 cell positive electrode side ,V2 cell negative electrode side
I V2 cell positive electrode side ,V3 cell negative electrode side
I V3 cell positive electrode side ,V4 cell negative electrode side
I V4cell positive electrode side
-- Not connected
-- Power supply input pin
FUNCTION DESCRIPTION
This IC is a lithium-ion batteries (3-cell or 4-cell) protection IC. It has functions below: Overcharge detection,
Overdischarge detection, Overcurrent detection. It controls the batteries charging 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 detection 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
Http: //www.silan.com.cn
REV:1.4 2008.03.12
Page 5 of 10
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet SA45141.PDF ] | |
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