DS2726
5-Cell to 10-Cell Li+ Protector with
Cell Balancing
4 _______________________________________________________________________________________
Note 1: All voltages relative to GND.
Note 2: Voltages below this level cannot be monitored; therefore, CC and DC are off below this value.
Note 3: Full-gate drive is not achieved until the voltage source for the gate driver (V
PKP
or V
VIN
) is above 13V.
Note 4: With 10µF decoupling capacitor.
Note 5: I
LOAD
is the current load on the pin specified in the parameter.
Note 6: V
CC
cannot meet specification if V
VIN
is below this value.
Note 7: Capacitance tolerance introduces additional error.
Note 8: With ≥ 0.1µF decoupling capacitor.
Note 9: Current is an average. Spikes up to 200µA when measuring cell voltages.
Note 10: Current is an average. Spikes up to 15µA when measuring cell voltages.
Note 11: Current depends on the number of cells being balanced.
Note 12: Includes switching time and comparator delay with 25mV overdrive.
ELECTRICAL CHARACTERISTICS: PROTECTION CIRCUIT (continued)
(T
A
= 0°C to +50°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Overvoltage Delay t
OVD
128 x
t
DOCDMIN
128 x
t
DOCDMAX
ms
Undervoltage Delay t
UVD
128 x
t
DOCDMIN
128 x
t
DOCDMAX
ms
C
DOCD
= 100pF (Notes 7, 12) 2.56 3.20 3.84
Discharge Overcurrent Delay t
DOCD
C
DOCD
= 1000pF (Notes 7, 12) 25.6 32.0 38.4
ms
C
SCD
= 100pF (Notes 7, 12) 45 58 72
Short-Circuit Delay t
SCD
C
SCD
= 1000pF (Notes 7, 12) 405 508 612
μs
Charger-Detect Threshold
(V
PKP
- V
VIN
)
V
CDET
3 17 mV
Test Threshold V
TP
DOC conditions 0.8 1.2 1.7 V
DOC condition, V
IN
- V
PKP
= 2V 68 120 200 μA
Test Current I
TST
DOC condition, V
IN
- V
PKP
= 50V 0.5 1.20 1.8 mA
