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L3751 Datasheet(PDF) 7 Page - STMicroelectronics

Part # L3751
Description  Wide 6 V to 75 V input voltage synchronous buck controller
PDF  41 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L3751 Datasheet(HTML) 7 Page - STMicroelectronics

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4
Maximum ratings
Table 3. Absolute maximum ratings
Symbol
Parameter
Min.
Max.
Unit
VIN
Input voltage
-0.3
100
V
SW
Switching node
-1
100
V
Switching node (20 ns transient)
-5
100
V
ILIM
Current limit pin
-1
100
V
EN/UVLO
Enable pin and undervoltage lockout
-0.3
100
V
VCC
VCC pin
-0.3
8
V
FB, COMP, SS/TRK, RT Analog pins
-0.3
4.6
V
SYNCIN
Synchronization input
-0.3
8
V
BST
Bootstrap pin
-0.3
100
V
BST to SW
Bootstrap to SW voltage difference
-0.3
8
V
LO
20 ns transient
-3
V
PGOOD
Power Good
-0.3
14
V
TJ
Operating junction temperature
-40
150
°C
TSTG
Storage temperature range
-40
150
°C
Note:
Stressing the device above the absolute maximum rating may cause permanent damage to the device. These
are stress ratings only and operation of the device at these or any other conditions above those indicated in
the operating sections of this specification is not implied. Exposure to absolute maximum rating conditions may
affect device reliability.
Table 4. Thermal data
Symbol
Parameter
Value
Unit
RthJA
Thermal resistance junction-ambient
30
°C/W
1. FR4 board with using 1 sq−in pad, 1 oz Cu.
Table 5. ESD performance
Symbol
Parameter
Test conditions
Value
Unit
ESD
ESD protection voltage
HBM
2
kV
CDM
500
V
Table 6. Recommended operating conditions
Symbol
Parameter
Value
Unit
VIN
Input voltage
6 to 75
V
EN/UVLO
Analog pins
0 to VIN
V
PGOOD
Power Good
0 to 13
V
ISYNCOUT
SYNCOUT pin sink and source currents
-1 to 1
mA
IPGOOD
PGOOD sink current
2
mA
TOP
Operating junction temperature range
- 40 to 125
°C
L3751
Maximum ratings
DS13841 - Rev 1
page 7/41



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