XR77128 Datasheet, PDF (5/28 Pages) Exar Corporation – Quad Output Digital PWM/PFM

Symbol
Parameter
PWM Generators and Oscillator
f_SW
Switching Frequency Range
Switching Frequency Accuracy
f_CLKIN
CLOCK IN Synchronization Fre-
quency
I²C and GPIOs²
V_IL
Input Pin Low Level
V_IH
Input Pin High Level
Input Pin Leakage Current
V_OL
Output Pin Low Level
V_OH
Output Pin High Level
PSIOs³
V_IL
V_IH
V_IH
V_OL
V_OH
Output Pin High-Z Leakage Current
(GPIO pins only)
Maximum Sink Current
I/O Frequency
Input Pin Low Level
Input Pin High Level
Input Pin High Level
Input Pin Leakage Current
Output Pin Low Level
Output Pin High Level
Output Pin High-Z Leakage Current
(PSIO pins only)
I/O Frequency
SMBus (I²C) Interface
V_IL
Input Pin Low Level
V_IH
Input Pin High Level
V_HYS
Hysteresis of Schmitt Trigger Inputs
Conditions
Steps defined in table
When synchronizing to an external clock
(Range 1)
When synchronizing to an external clock
(Range 2)
I_SINK = 1mA
I_SOURCE = 1mA
I_SOURCE = 0mA
Open Drain Mode
PSIO0 and PSIO1
PSIO2
I_SINK = 3mA
Open Drain. External pull-up resistor to
user supply.
V_IO = 3.3V ±10%
V_IO = 3.3V ±10%
V_IO = 3.3V ±10%
V_OL
I_LEAK
Output Pin Low Level (open drain or
collector)
Input Leakage Current
I_SINK = 3mA
Input is between 0.1V_IO and 0.9V_IO
© 2014 Exar Corporation
5 / 28
XR77128
Min
Typ
Max
Units
105
1230
-5
5
20
25.7
31
10
12.8
15.5
kHz
%
MHz
MHz
0.8
1.35
1
0.4
2.4
3.3
3.6
10
1
30
V
V
μA
V
V
V
μA
mA
MHz
0.8
V
2
V
1.35
V
1
μA
0.4
V
15
V
10
μA
5
MHz
0.7V_IO
0.05
V_IO
-10
0.3V_IO
V
V
V
0.4
V
10
μA
exar.com/XR77128
Rev 1A