BQ24610 Datasheet, PDF (8/33 Pages) Texas Instruments – Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger with System Power Selector and Low Iq

bq24610
bq24617
SLUS892 – DECEMBER 2009
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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
PWM DRIVERS TIMING
Driver dead time
Dead time when switching between LSD and HSD, no
load at LSD and HSD
30
ns
PWM OSCILLATOR
V_{RAMP_HEIGHT}
PWM ramp height
PWM switching frequency⁽²⁾
As percentage of VCC
7
%
510
600
690 kHz
INTERNAL SOFT START (8 steps to regulation current ICHG)
Soft start steps
8
step
Soft start step time
1.6
ms
CHARGER SECTION POWER-UP SEQUENCING
Charge-enable delay after power-up
Delay from CE=1 to charger is allowed to turn on
1.5
s
LOGIC IO PIN CHARACTERISTICS (CE, STAT1, STAT2, PG)
V_{IN_LO}
V_{IN_HI}
V_{BIAS_CE}
V_{OUT_LO}
CE input low threshold voltage
CE input high threshold voltage
2.1
CE input bias current
V = 3.3V (CE has internal 1MΩ pulldown resistor)
STAT1, STAT2, PG output low
saturation voltage
Sink Current = 5 mA
0.8
V
6 μA
0.5
V
I_{OUT_HI}
Leakage current
V = 32 V
1.2 µA
(2) Verified by design
8
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