XRP7708_12 Datasheet, PDF (4/28 Pages) Exar Corporation – Quad Channel Digital PWM Step Down Controllers

XRP7708 and XRP7740
Quad Channel Digital PWM Step Down Controllers
I²C Specification
Parameter
I²C Speed
Input Pin Low Level, VIL
Input Pin High Level, VIH
Hysteresis of Schmitt Trigger
Inputs, VHYS
Output Pin Low Level (open
drain or collector) VOL
Input Leakage Current
Output Fall Time from VIHMIN to
VILMAX
Capacitance for each I/O Pin
Min.
2.97
0.165
-10
20+0.1Cb2
Typ.
Note 2: Cb is the capacitance one one bus in pF
Gate Drivers
Parameter
GH, GL Rise and Fall Time
GH, GL Pull-up On-State Output
Resistance
GH, GL Pull-up On-State Output
Resistance
GH, GL Pull-down On-State
Output Resistance
GH, GL Pull-down Off-State
Output Resistance
Min.
Typ.
30
5
3
1.8
50
Max.
400
1.0
0.4
10
250
10
Units
kHz
V
V
V
V
µA
ns
pF
Max.
Units
ns
Ω
Ω
Ω
kΩ
Conditions
Based upon I²C master clock
ISINK=3mA
Input is between 0.33V and 2.97V
With a bus capacitance from 10pF to
400pF
Conditions
At 10% to 90% of full scale pulse.
1nF Cload
XRP7708
XRP7740
Both XRP7708 and XRP7740
VIN=VCCD=0V
© 2012 Exar Corporation
4/28
Rev. 1.2.2