lm5045sqx National Semiconductor Corporation, lm5045sqx Datasheet - Page 6

• Manufacturer Part Number: lm5045sqx
• Description: Full-bridge Pwm Controller With Integrated Mosfet Drivers
• Manufacturer: National Semiconductor Corporation

www.national.com
Startup Regulator (VCC pin)
Voltage Reference Regulator (REF pin)
Under-Voltage Lock Out and shutdown (UVLO pin)
Soft-Start (SS Pin)
VIN to GND
HS to
BST1/BST2 to GND
BST1/BST2 to HS1/HS2
HO1/HO2 to
LO1/LO2/SR1/SR2(Note
V
REF,SSOFF,RT,OVP,UVLO to GND
RAMP
COMP
Absolute Maximum Ratings
Electrical Characteristics
junction temperature range of -40°C to +125°C. Unless otherwise specified, the following conditions apply: VIN = 48V, RT =
25kΩ, RD1=RD2=20kΩ. No load on HO1, HO2, LO1, LO2, SR1, SR2, COMP=0V, UVLO=2.5V, OVP=0V, SSOFF=0V.
Symbol
CC
I
V
V
I
I
REF(Lim)
V
CC(Lim)
CC(ext)
I
V
V
V
V
CC(UV)
REFUV
UVLO
UVLO
I
I
to GND
OVP
CC1
CC2
REF
SS
IN
GND(Note
HS1/HS2(Note
Parameter
VCC voltage
VCC voltage
VCC current limit
VCC supply current
VCC load regulation
VCC under-voltage threshold
VCC under-voltage threshold
VIN operating current
VIN shutdown current
VIN start-up regulator leakage
REF Voltage
REF voltage regulation
REF current limit
V
Hysteresis
Under-voltage threshold
Hysteresis current
Under-voltage standby enable
threshold
Hysteresis
OVP shutdown threshold
OVP hysteresis current
SS charge current
SS threshold for SSSR charge
current enable
SS output low voltage
SS threshold to disable switching
REF
4)
under-voltage threshold
2)
2)
-0.3V to 105V
-5V to 105V
-0.3V to 116V
-0.3V to 16V
-0.3V to BST1/
BST2+0.3V
-0.3V to VCC+0.3V
-0.3V to 16V
-0.3V to 7V
-0.3V to 7V
-0.3V
Limits in standard typeface are for T
(Note
Conditions
I
I
V
Supply current into VCC from an externally
applied source. V
I
Positive going VCC
Negative going VCC
V
V
V
I
I
V
Positive going V
UVLO pin sinking current when
V
UVLO voltage rising
OVP rising
OVP sources current when OVP>1.25V
V
I
Sinking 100µA
CC
CC
CC
REF
REF
COMP
CC
IN
VIN
CC
REF
UVLO
SS
1)
= 10mA (SSSR<1V)
= 10mA (SSSR>1V)
=20V, V
from 0 to 50 mA
= 6V
=10V
=100V, V
= 0V
= 0mA
= 0 to 10mA
= 4.5V
<800µA
<1.25V
UVLO
6
UVLO
=0V
REF
COMP Input Current
All other inputs to
ESD Rating
Storage Temperature Range
Junction Temperature
VIN Voltage
External Voltage Applied to VCC
Junction Temperature
SLOPE
Operating Ratings
CC
=0V
= 10V
HBM(Note
J
= 25°C only; limits in boldface type apply the
GND(Note
3)
V
4.85
1.18
0.32
1.18
1.93
Min
2)
9.3
7.5
CC1
0.2
5.9
4.3
52
15
16
16
16
–
(Note
V
0.25
1.25
0.05
1.25
Typ
300
350
160
200
9.6
7.8
4.6
CC1
0.1
6.3
4.5
0.4
2.0
70
35
25
20
20
20
20
40
1)
4
5
+10mA
-0.3 to REF+0.3V
2 kV
-55°C to 150°C
150°C
–
-40°C to +125°C
Max
5.15
1.32
0.48
1.32
2.20
520
550
9.9
8.1
6.7
4.7
50
24
24
24
14V to 100V
10V to 14V
-0.3V to 2V
Units
mA
mA
mV
mA
mV
mA
mV
mV
µA
µA
µA
µA
µA
µA
V
V
V
V
V
V
V
V
V
V
V
V