ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = V
CC
, V
SHDN
= 5V,
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Overvoltage Fault
Propagation Delay
PGOOD Threshold
PGOOD Propagation Delay
PGOOD Output Low Voltage
PGOOD Leakage Current
Thermal-Shutdown Threshold
Output Undervoltage
Shutdown Threshold
Output Undervoltage
Shutdown Blanking Time
INPUTS AND OUTPUTS
Feedback Input Leakage Current
PRO
Input Voltage
V
FB3
= V
FB5
= 2.2V
Low level
High level
Low level
SKIP
Input Voltage
Float level
High level
TON Input Voltage
Low level
High level
Clear fault level/SMPS off level
ON3, ON5 Input Voltage
Delay start level
SMPS on level
V
PRO
or V
TON
= 0 or 5V
V
ON_
= 0 or 5V
Input Leakage Current
V
SKIP
= 0 or 5V
V
SHDN
= 0 or 24V
V
CS_
= 0 or 5V
V
ILIM3
, V
ILIM5
= 0 or 2V
SHDN
Input Trip Level
DH_ Gate-Driver
Sink/Source Current
DL_ Gate-Driver Source Current
DL_ Gate-Driver Sink Current
DH_ Gate-Driver On-Resistance
DL_ Gate-Driver On-Resistance
Rising edge
Falling edge
DH3, DH5 forced to 2V
DL3 (source), DL5 (source), forced to 2V
DL3 (sink), DL5 (sink), forced to 2V
BST - LX_ forced to 5V
DL_, high state (pullup)
DL_, low state (pulldown)
1.7
2.4
-1
-2
-1
-1
-2
-0.2
1.2
0.96
1.6
1.00
2
1.7
3.3
1.5
2.2
0.6
4.0
5.0
1.5
+1
+2
+1
+1
+2
+0.2
2.0
1.04
V
A
A
A
Ω
Ω
μA
2.4
0.8
2.3
V
1.7
2.4
0.8
V
1.5
0.8
2.3
V
-200
+40
+200
0.6
nA
V
FB3 or FB5 with respect to nominal output voltage
From ON_ signal
65
10
CONDITIONS
FB3 or FB5 delay with 50mV overdrive
FB3 or FB5 with respect to nominal output, falling edge,
typical hysteresis = 1%
Falling edge, 50mV overdrive
I
SINK
= 4mA
High state, forced to 5.5V
+160
70
22
75
35
-12
MIN
TYP
10
-9.5
10
0.3
1
-7
MAX
UNITS
μs
%
μs
V
μA
o
C
%
ms
4
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
