BQ24751RHDRG4 Datasheet, PDF (10/38 Pages) Texas Instruments – Host-controlled Multi-chemistry Battery Charger

bq24751
SLUS734D – DECEMBER 2006 – REVISED MARCH 2009............................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
7.0 V ≤ V_PVCC ≤ 24 V, 0°C < T_J < +125°C, typical values are at T_A = 25°C, with respect to AGND (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
QUIESCENT CURRENT
I_{OFF_STATE}
Total off-state quiescent current into
pins: SRP, SRN, BAT, BTST, PH,
PVCC, ACP, ACN
V_BAT = 16.8 V, V_ACDET < 0.6 V,
V_PVCC > 5 V, T_J = 0 to 85°C
7
10
µA
I_AC
I_{BATQ_CD}
Adapter quiescent current
Total quiescent current into pins:
SRP, SRN, BAT, BTST, PH
V_PVCC = 20 V, charge disabled
Adapter present, VACDET > 2.4 V,
charge disabled
2.8
4 mA
100
200
µA
INTERNAL SOFT START (8 steps to regulation current)
Soft start steps
8
step
Soft start step time
1.7
ms
CHARGER SECTION POWER-UP SEQUENCING
Charge-enable delay after power-up
Delay from when adapter is detected to
when the charger is allowed to turn on
518 700
908 ms
LOGIC INPUT PIN CHARACTERISTICS (CHGEN, LEARN)
V_{IN_LO}
Input low threshold voltage
V_{IN_HI}
Input high threshold voltage
I_BIAS
Input bias current
LOGIC INPUT PIN CHARACTERISTICS (CELLS)
V_CHGEN = 0 to V_REGN
0.8
V
2.1
1
µA
V_{IN_LO}
V_{IN_MID}
Input low threshold voltage, 3 cells
Input mid threshold voltage, 2 cells
CELLS voltage falling edge
CELLS voltage rising for MIN,
CELLS voltage falling for MAX
0.5
0.8
1.8
V
V_{IN_HI}
I_{BIAS_FLOAT}
Input high threshold voltage, 4 cells
Input bias float current for 2-cell
selection
CELLS voltage rising
V_CHGEN = 0 to V_REGN
2.5
–1
1
µA
OPEN-DRAIN LOGIC OUTPUT PIN CHARACTERISTICS (ACGOOD)
V_{OUT_LO}
Output low saturation voltage
Delay, ACGOOD falling
Sink Current = 5 mA
518 700
0.5
V
908 ms
Delay, ACGOOD rising
10
ms
10
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