lm5037mtx National Semiconductor Corporation, lm5037mtx Datasheet - Page 4

• Manufacturer Part Number: lm5037mtx
• Description: Dual-mode Pwm Controller With Alternating Outputs
• Manufacturer: National Semiconductor Corporation

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Startup Regulator (VCC Pin)
Voltage Reference Regulator (REF Pin)
Under-Voltage Lock Out and Shutdown (UVLO Pin)
Current Sense Input (CS Pin)
Current Limit Restart (RES Pin)
Soft-Start (SS Pin)
Symbol
V
V
I
I
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VIN to GND
VCC, OUTA, OUTB to GND
CS to GND
UVLO, FB, RT2, RT1, RAMP, SS, REF to
GND
COMP, RES (Note 3)
Electrical Characteristics
apply over full Operating Junction Temperature range. V
unless otherwise stated.
VCC(Lim)
REF(Lim)
V
VCC(UV)
REF(UV)
I
V
V
V
UVLO
V
I
UVLO
I
VCC
VIN
REF
RES
SS
CS
VCC voltage
VCC current limit
VCC Under-voltage threshold
Hysteresis
Startup regulator current
Supply current into VCC from
external source
REF Voltage
REF Voltage Regulation
REF Current Limit
VREF Under-Voltage Threshold
Hysteresis
Under-voltage threshold
Hysteresis current
Under-voltage Shutdown
Threshold
Hysteresis
Current Limit Threshold
CS delay to output
Leading edge blanking time at
CS
CS sink impedance (clocked)
RES Threshold
Charge source current
Discharge sink current
Charging current in normal
operation
Charging current during a hiccup
mode restart
Parameter
-0.3V to 105V
-0.3V to 16V
-0.3V to 1.0V
-0.3V to 7V
I
V
V
V
V
Outputs & COMP = Open
I
I
V
UVLO pin sinking
UVLO voltage rising
CS from zero to 1V. Time for OUTA and OUTB
to fall to 90% of VCC. Output load = 0 pF.
Internal FET sink impedance
V
V
V
V
VCC
REF
REF
Specifications with standard typeface are for T
VCC
VIN
VIN
VIN
REF
RES
RES
SS
SS
(Note 1)
= 0
= 0
= 0 mA
= 0 to 2.5 mA
= 10 mA
= V
= 100V, V
= 48V, V
= 4.5V
= 1.5V
= 1V
= 7V
VCC
UVLO
UVLO
VIN
Conditions
= 0V
= 48V, V
= 0V
4
VIN Voltage
External Voltage Applied to VCC
Operation Junction Temperature
ESD Rating
Human Body Model
Storage Temperature Range
Junction Temperature
Operating Ratings
VCC
= 10V, R
RT1
= 30.1 kΩ, R
J
= 25°C, and those with boldface type
Reg-0.2
VCC
4.75
1.20
0.37
0.22
Min
7.4
3.7
1.9
0.6
45
18
14
70
5
5
RT2
= 30.1 kΩ, V
Reg-0.1
VCC
0.35
1.25
0.42
0.25
Typ
350
325
100
7.7
1.5
0.1
60
10
22
27
65
21
18
3
5
7
4
2
8
1
−40°C to + 125°C
2kV
−65°C to + 150°C
150°C
13V to 100V
1.295
UVLO
Max
5.15
0.47
0.29
430
370
130
5.5
4.3
2.2
1.4
25
25
45
22
11
8V to 15V
8
= 3V
Units
mA
mA
mV
mA
µA
µA
µA
µA
µA
µA
µA
ns
ns
Ω
V
V
V
V
V
V
V
V
V
V
V