UC17131/2/3
UC27131/2/3
UC37131/2/3
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, CDEL = 10nF, VCC = 25V, CSL = GND, CSH = LS;
R
CSH
= 0.5Ω (Note 1); IN=0V (for OFF condition) and IN=5V (for ON condition); T
A
= T
J
.
PARAMETER
Reference
VREF
Line Regulation
Load Regulation
Short Circuit Current
Input Comparator
Turn-On Threshold Voltage
Input Bias Current
Hysteresis
V
IN
= 3.5V
R
HYST
= GND (Internally for X31, X33)
R
HYST
= 96.67k for (X32)
Output: High Side (UCX7133: CSH = LS and CSL = GND Internally; See Fig. 2a)
Rise Time (Off to On)
Fall Time (On to Off)
Output Short Circuit
Voltage Clamp
Saturation Voltage
R
LOAD
= 250Ω to GND
R
LOAD
= 250Ω to GND
HS = 0.25Ω to GND
LS–HS
25°C, R
LOAD
= 100Ω to GND
–40°C, R
LOAD
= 100Ω to GND
–55°C, R
LOAD
= 100Ω to GND
Leakage Current
Output: Low Side (UCX7131; CSH = VCC and CSL = HS Internally; See Fig. 2b)
Rise Time (On to Off)
Fall Time (Off to On)
Output Short Circuit
Voltage Clamp
Saturation Voltage
R
LOAD
= 250Ω to VCC, R
CSL
= 0.5Ω
R
LOAD
= 250Ω to VCC, R
CSL
= 0.5Ω
LS = 0.25Ω to VCC
LS–HS
25°C, R
LOAD
= 100Ω to VCC, R
CSL
= 0.5Ω
–40°C, R
LOAD
= 100Ω to VCC, R
CSL
= 0.5Ω
–55°C, R
LOAD
= 100Ω to VCC, R
CSL
= 0.5Ω
Leakage Current
VCC Fault Section
Output Turn-On Delay, t
D(ON)
Output Turn-Off Delay, t
D(OFF)
VCC Turn-Off Threshold
CDEL Section
V
CDEL_MAX
V
FAULT_H
V
FAULT_L
Overcurrent Fault Section (See Fig. 3c)
Short Circuit Turn-Off Delay, t
SC
Short Circuit Recovery Time, t
ROFF
High Side Current Threshold, I
TH-H
Low Side Current Threshold, I
TH-L
Overcurrent Duty Cycle
Step I
LOAD:
0mA to 400mA
I
LOAD
= 400mA, 100µs
R
CSH
= 0.5Ω
R
CSL
= 0.5Ω
R
LOAD
= 0.25Ω to GND
250
250
0.6
75
10
325
325
0.8
400
400
1.0
µs
ms
mA
mA
%
5.8
4.9
1.0
V
V
V
Step VCC from 0V to 8V (See Fig. 3a)
Pulse VCC from 25V to VCC Turn-Off
Threshold
Pulse VCC Low
9.5
300
6.5
11
500
7
13.5
700
7.5
ms
µs
V
500
67
15
25
700
72
50
60
900
77
1.2
1.3
1.4
5
V/µs
V/µs
mA
V
V
V
V
µA
500
67
72
30
30
80
80
900
77
1.2
1.3
1.4
5
V/µs
V/µs
mA
V
V
V
V
µA
0.775
0.9
30
2.7
3
3.3
5
1.025
V
µA
V
mV
25°C
–55°C to 125°C
VCC = 8V to 64V
0 < I
REF
< 8mA
REF = 0V
5.8
5.6
6
6
10
10
20
6.2
6.4
35
50
35
V
V
mV
mV
mA
TEST CONDITIONS
MIN
TYP
MAX UNITS
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