Datasheet

bq24620
SLUS893A –MARCH 2010– REVISED OCTOBER 2011 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
5 V ≤ V
VCC
≤ 28 V, 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 OSCILLATOR
V
RAMP_HEIGHT
PWM ramp height As percentage of VCC 7%
PWM switching frequency
(2)
255 300 345 kHz
INTERNAL SOFT START (Eight Steps to Regulation Current I
CHARGE
)
Soft-start steps 8 step
Soft-start step time 1.6 ms
CHARGER SECTION POWER-UP SEQUENCING
Delay from when CE = 1 to when the charger is
Charge-enable delay after power up 1.5 s
allowed to turn on
LOGIC IO PIN CHARACTERISTICS
V
IN_LO
CE input-low threshold voltage 0.8 V
V
IN_HI
CE input-high threshold voltage 2.1 V
V
BIAS_CE
CE input bias current V = 3.3 V (CE has internal 1-MΩ pulldown resistor) 6 μA
V
OUT_LO
STAT, PG output-low saturation voltage Sink current = 5 mA 0.5 V
I
OUT_HI
Leakage current V = 32 V 1.2 µA
(2) Verified by design
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