XR77103 Datasheet, PDF (5/28 Pages) Exar Corporation – 3-Output Programmable Buck Regulator

XR77103
Electrical Characteristics (Continued)
T_A = 25°C, V_IN = 12V, EN = V_CC, f_SW = 1MHz, unless otherwise specified. Limits applying over the full operating temperature
range are denoted by a •.
Symbol
Parameter
Power Good Reset Generator
V_UVBUCK
Threshold voltage for buck
under voltage
t_{PG_DEGLITCH}
t_{ON_HICCUP}
Deglitch time
Hiccup mode on time
t_{OFF_HICCUP}
Hiccup mode off time
t_RP
Minimum reset period
R_PG
Power good pull-down
on resistance
Input Threshold (SDA, SCL, nWR, A0)
V_IH
Input threshold high
V_IL
Input threshold low
A0, nWR pull up resistor
Input Threshold (SYNC, EN)
V_IH
Input threshold high
V_IL
Input threshold low
Conditions
• Min
Typ
Max
Units
Output falling,
(disabled after t_{ON_HICCUP})
Output rising, (PG will be asserted)
Rising and falling
V_UVBUCKX asserted
Once t_{OFF_HICCUP} elapses,
all converters will start up again
85
%
90
11
ms
12
ms
15
ms
1
s
14
50
Ω
V_INPUT rising, V_L = 3.3V
V_INPUT falling, V_L = 3.3V
V_INPUT rising
V_INPUT falling
•
1.52
1.83
V
•
0.98
1.24
V
100
kΩ
•
2.07
•
1.36
2.53
V
1.67
V
REV1B
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