BQ24616 Datasheet, PDF (6/34 Pages) Texas Instruments – JEITA Guideline Compatible Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger with System Power Selector and Low Iq

bq24616
SLUSA49A – APRIL 2010 – REVISED MAY 2010
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ELECTRICAL CHARACTERISTICS (continued)
5.0V ≤ V(VCC) ≤ 28V, 0°C < T_J < +125°C, typical values are at T_A = 25°C, with respect to GND (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
BAT OVER-VOLTAGE COMPARATOR
V_{OV_RISE}
Over-voltage rising threshold
V_{OV_FALL}
Over-voltage falling threshold
INPUT OVER-VOLTAGE COMPARATOR (ACOV)
As percentage of V_FB ,T1 – T5
As percentage of V_FB,T1 – T5
104%
102%
V_ACOV
AC over-voltage rising threshold on
VCC
31.04
32 32.96
V
V_{ACOV_HYS}
AC over-voltage falling hysteresis
AC over-voltage deglitch (both edge)
Delay to changing the STAT pins
1
V
1
ms
AC over-voltage rising deglitch
Delay to turn-off ACFET, disable charge
1
ms
AC over-voltage falling deglitch
Delay to turn on ACFET, resume charge
20
ms
THERMAL SHUTDOWN COMPARATOR
T_SHUT
T_{SHUT_HYS}
Thermal shutdown rising temperature
Thermal shutdown hysteresis
Thermal shutdown rising deglitch
Temperature increasing
Temperature increasing
145
°C
15
°C
100
ms
Thermal shutdown falling deglitch
Temperature decreasing
10
ms
THERMISTOR COMPARATOR
V_T1
T1 (0 °C) threshold, Charge suspended
below this temperature.
V_TS rising, As Percentage to V_VREF
70.2% 70.8% 71.4%
V_T1-HYS
Charge back to I_CHARGE/2 and V_FB=2.1
V above this temperature.
Hysteresis, V_TS falling
0.6%
T2 (10 °C) threshold, Charge back to
V_T2
I_CHARGE/2 and V_FB=2.1 V below this
V_TS rising, As Percentage to V_VREF
temperature.
68.0% 68.6% 69.2%
V_T2-HYS
Charge back to I_CHARGE and V_FB=2.1 V
above this temperature.
Hysteresis, V_TS falling
0.8%
T3 (45 °C) threshold, Charge back to
V_T3
I_CHARGE and V_FB=2.05 V above this
V_TS falling, As Percentage to V_VREF
temperature.
55.5% 56.1% 56.7%
V_T3-HYS
Charge back to I_CHARGE and V_FB=2.1 V
below this temperature.
Hysteresis, V_TS rising
0.8%
T4 (50 °C) threshold, Charge back to
V_T4
I_CHARGE and V_FB=2.025 V above this
V_TS falling, As Percentage to V_VREF
temperature.
53.2% 53.7% 54.2%
V_T4-HYS
Charge back to I_CHARGE and V_FB=2.05 V
below this temperature.
Hysteresis, V_TS rising
0.8%
V_T5
T5 (60 °C) threshold, Charge
suspended above this temperature.
V_TS falling, As Percentage to V_VREF
47.6% 48.1% 48.6%
V_T5-HYS
Charge back to I_CHARGE and V_FB=2.025
V below this temperature.
Hysteresis, V_TS rising
1.2%
Deglitch time for Temperature Out of
Valid Charge Range Detection
Deglitch time for Temperature In Valid
Range Detection
V_TS < V_T5 or V_TS > V_T1
V_TS > V_T5 + V_{T5_HYS} or V_TS < V_T1 - V_{T1_HYS}
400
ms
20
Deglitch time for Temperature Detection
above/below T2, T3, T4 threshold
25
ms
Charge Current when V_TS between V_T1
and V_T2 range
CHARGE OVER-CURRENT COMPARATOR (CYCLE-BY-CYCLE)
I_CHARGE
/2
Charge over-current falling threshold
Current rising, in non-synchronous mode, measure on
V_(SRP-SRN), V_SRP < 2 V
45.5
mV
Current rising, as percentage of V_{(IREG_CHG)}, in
V_OC
Charge over-current threshold floor
synchronous mode, V_SRP > 2.2V
Minimum OCP threshold in synchronous mode,
measure on V_(SRP-SRN), V_SRP > 2.2V
160%
50
mV
Charge over-current threshold ceiling
Maximum OCP threshold in synchronous mode,
measure on V_(SRP-SRN), V_SRP > 2.2V
180
mV
6
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