CM9101 Datasheet, PDF (4/12 Pages) California Micro Devices Corp – Compact Cost-effective Fast Charger

PRELIMINARY
CM9101
Specifications (cont’d)
ELECTRICAL OPERATING CHARACTERISTICS ^{(SEE NOTE 1)}
SYMBOL PARAMETER
CONDITIONS
I_CC
CC Mode Charging Current, V_BSEN > 3.5V
MIN
0.92 x I_CC
TYP
I_CC
=
------2----5---0---0--------
R_{S E T (k Ω )}
MAX
1.08 x
I_CC
UNITS
mA
V_CV
I_TERM
CV Mode Voltage Threshold
Charge Termination Current V_BSEN > 4.190V
4.190
4.200
4.210
V
0.8 x
I_TERM
I_TERM
=
--------1---0----0---------
R_{S E T (k Ω )}
1.2 x
I_TERM
mA
V_RCH
Recharge Mode Threshold
4.090
4.100
4.110
V
CT
Constant-temperature
(Note 2)
95
105
125
C
Mode, Limit
OTP_LIMIT Over-temperature Protec­ (Note 3)
tion, Limit
130
140
150
C
OCP_LIMIT Over-current Charging
(OCP), Limit
(Note 4)
0.9
1.0
1.1
A
R_DSON R_DSON of Charger MOSFET I_CC = 500mA
100
120
150
mΩ
VREF
V_REF
Regulated Voltage V_REF I_REF < 1mA
4.190
4.200
4.210
V
VSTB
V_STB
Regulated Voltage V_STB
4.100
4.200
4.300
V
Control Function
I_BSEN
BSEN Pin Leakage Current V_IN = 0
0.2
1.0
µA
V_STAT
STAT (Open Drain) Output I_SINK = 5mA
Low Voltage
I_SINK = 20mA
0.1
V
0.5
V
V_{IH EN}
ENA Input High Level
1.5
V
V_{IL EN}
ENA Input Low Level
0.4
V
Thermistor Function (Note 4, 5)
V_BH
Battery HOT Voltage
V_IN = 5.0V
Threshold (THERM Pin) (Note 6)
0.9 x V_BH V_BH = 0.5 x V_IN 1.1 x V_BH V
V_BC
Battery COLD Voltage
V_IN = 5.0V
Threshold (THERM Pin) _{(Note 6)}
0.9 x V_BC V_BC = 7/8 x V_IN 1.1 x V_BC V
Hysterezis of V_BH, V_BC
80
100
120
mV
Note 1: V_IN = 5.0V. All outputs are on. T_A = 25°C unless otherwise specified.
Note 2: When chip temperature reaches 105°C, the IC’s internal thermal limit will maintain this temperature by decreasing the pro­
grammed charge current.
Note 3: When chip temperature reaches 140°C, the IC goes into a latched shutdown mode. It stops charging, stops supplying
V_OUT). To resume the charging function, a toggle of V_IN is required.
Note 4: This feature can be disabled by connecting the THERM pin to GND.
Note 5: This function requires a Thermistor connected between the THERM pin and GND. Another resistor connected between
THERM pin and V_IN is required, its value should equal the Thermistor Hot Value (at 50°C). In order to catch both the 0°C
and 50°C thresholds (typical range for Li-ion battery) use Thermistors following 7/1 ratio (Thermistor COLD/Thermistor
HOT=7).
Note 6: If the battery HOT/COLD detection identifies a condition outside the thresholds, the IC stops charging the battery and waits
for the temperature to return to the normal value.
© 2006 California Micro Devices Corp. All rights reserved.
4 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 lTel: [phone] lFax: [phone] lwww.cmd.com
06/30/06