Datasheet

Electrical characteristics VNI8200XP
14/40 DocID15234 Rev 6
5.6 Step-down switching regulator
10.5 V < V
CC
< 36 V; -40 °C < T
J
< 125 °C; unless otherwise specified.
Hyst I
LIM
tracking limits R
LOAD
= 0 0.3 A
I
LFAULT
FAULT leakage current
V
pin
= 5 V 2 μAI
TWARN
TWARN leakage
current
I
PG
PG leakage current
T
TSD
Junction shutdown
temperature
160 180 °C
T
R
Junction reset
temperature
160 °C
T
HIST
Junction thermal
hysteresis
20 °C
T
CSD
Case shutdown
temperature
115 130 155 °C
T
CR
Case reset
temperature
110 °C
T
CHYST
Case thermal
hysteresis
20 °C
t
WD
Watchdog hold time See Figure 8 50 ns
t
WM
Watchdog time See Table 14 and Figure 8
t
OUT_EN
OUT_EN pin
propagation delay
(1)
V
cc
= 24 V I
out
72 mA 10 us
t
res
OUT_EN hold time 50 ns
t
WO
Watchdog timeout
(2)
t
WM
+
t
d(off)
ms
1. Time from reset active low and power out disable.
2. The time from t
WM
elapsed to power out disable.
Table 9. Protection and diagnostic (continued)
Symbol Parameter Test conditions Min. Typ. Max. Unit
Table 10. Step-down switching regulator
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
DC_out
Regulated output voltage
I
REG
from 0 to 100 mA
V
REG
3.3 V, Figure 10.
3.1 3.3 3.5
V
Ireg from 0 to 100 mA
V
REG
5 V, Figure 11.
5
V
FB
Voltage feedback 3.1 3.3 3.5 V
R
DS(on)
MOSFET on-resistance 1.5 Ω