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SI9731 Datasheet, PDF (3/10 Pages) Vishay Siliconix – UP Controlled Battery Charger For 1-Cell Li-ion or 1-Cell to 3-Cell NiCd/NiMH Batteries
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Si9731
Vishay Siliconix
SPECIFICATIONS
Parameter
Symbol
Test Conditions Unless Specified
- 40 °C < TA < + 85 °C
3.0 V ≤ VCHARGER ≤ 6.5 V, VON/OFF = 1.5 V
Mina
Typb Maxa
Unit
Quiescent Current (Normal Mode)
IIN(VCHARGER Pin)
ON-Mode
1 mA ≤ IBAT+ ≤ 600 mA
1
3 mA
Quiescent Current (Shutdown Mode)
IIN(VCHARGER Pin)
OFF-Mode
VON/OFF = 0 V, VCHARGER = 4.5 V
0.1
1
µA
Feedback Resistor
RFB1
RFB2 + RFB3
Pin 12 to Pin 14
Pin 12 to GND
1
kΩ
41
Battery Leakage Current
IPIN13 + IPIN14
VBAT+ = 4.2 V
VON/OFF = 0 V
VCHARGER = 0 V
- 1 0.1
1
µA
- 1 0.1
2
Q1 ON Resistance
Q1 rDS(on)
MAINCHARGEREN
≥ 1.5 V
400 mΩ
Q2 ON Resistance
Q5 ON Resistancec
Q2 rDS(on)
Q5 rDS(on)
VCHARGER = 4.5 V
TRICKLECHARGEEN
≤ 0.4 V
CVMODE ≥ 1.5 V
6
10
Ω
6
Over Voltage Detect Threshold
Over Voltage Detect Threshold Hysteresis
VCHARGER(OVD)
VCHARGER(OVD)
_HYS
Rising Edge of Battery Charger
12.2 12.8 13.4
V
0.4
Output High
CHARGERPRESENT and
Leakage
Current
IOH
CHARGERPOWER_ON
Output Low
Voltage
VOL
VOH = 6.5 V
IOL = 1 mA
0.1
2
µA
0.4
CHARGERPRESENTIN,
Logic Low
Voltage
VIL
CHARGERPOWER_ONIN,
TRICKLECHARGEEN,
MAINCHARGEEN or
Logic High
Voltage
VIH
CVMODE
Pull Down
Current
IP/D
0.4 V
1.5
0.7 10 µA
Thermal Shutdown Temperaturec
Thermal Shutdown Hysteresisc
TS/D
THYST
130
°C
10
Shutdown High Voltage Logic Level
Shutdown Low Voltage Logic Level
VON/OFF(high)
VON/OFF(low)
1.5
V
0.3
Shutdown Hysteresis
VON/OFF(hyst)
100
mV
Notes:
a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
b. Typical values are for DESIGN AID ONLY, not guaranteed or subject to production testing.
c. Guaranteed by design and characterization, not subject to production testing.
Document Number: 71321
S-60869-Rev. B, 22-May-06
www.vishay.com
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