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LM5010A Datasheet(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM5010A
Description  High Voltage 1A Step Down Switching Regulator
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM5010A Datasheet(HTML) 4 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VIN to RTN
-0.3V to 76V
BST to RTN
-0.3V to 90V
SW to RTN (Steady State)
-1.5V
BST to VCC
76V
BST to SW
14V
VCC to RTN
-0.3V to 14V
SGND to RTN
-0.3V to +0.3V
SS to RTN
-0.3V to 4V
VIN to SW
76V
All Other Inputs to RTN
-0.3V to 7V
ESD Rating (Note 2)
Human Body Model
2kV
Storage Temperature Range
-65˚C to +150˚C
Lead Temperature (Soldering 4 sec) (Note 4)
260˚C
Operating Ratings (Note 1)
VIN Voltage
6.0V to 75V
Junction Temperature
LM5010A
−40˚C to + 125˚C
LM5010AH
−40˚C to + 150˚C
Electrical Charateristics Specifications with standard type are for T
J = 25˚C only; limits in boldface type ap-
ply over the full Operating Junction Temperature (T
J) range. Minimum and Maximum limits are guaranteed through test, de-
sign, or statistical correlation. Typical values represent the most likely parametric norm at T
J = 25˚C, and are provided for ref-
erence purposes only. Unless otherwise stated the following conditions apply: V
IN = 48V, RON = 200k
Ω. See (Note 5).
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
CC Regulator
V
CCReg
V
CC regulated output
6.6
7
7.4
Volts
V
IN -VCC
I
CC = 0 mA, FS < 200 kHz, 6.0V
≤ V
IN
8.5V
100
mV
V
CC Bypass Threshold
V
IN Increasing
8.9
V
V
CC Bypass Hysteresis
V
IN Decreasing
260
mV
V
CC output impedance
(0 mA
≤ I
CC
≤ 5 mA)
V
IN = 6.0V
55
V
IN = 8.0V
50
V
IN = 48V
0.21
V
CC current limit (Note 3)
V
IN = 48V, VCC =0V
15
mA
UVLOVcc
V
CC under-voltage lock-out
threshold
V
CC Increasing
5.25
V
UVLO
VCC hysteresis
V
CC Decreasing
180
mV
UVLO
VCC filter delay
100 mV overdrive
3
µs
I
IN operating current
Non-switching, FB = 3V
675
950
µA
I
IN shutdown current
RON/SD = 0V
100
200
µA
Switch Characteristics
R
DS(on)
Buck Switch R
DS(on) @ ISW =
200 mA
T
J
≤ 125˚C
T
J
≤ 150˚C
0.35
0.80
0.85
UVLO
GD
Gate Drive UVLO
V
BST -VSW Increasing
1.7
3.0
4.0
V
UVLO
GD hysteresis
400
mV
SOFT-START Pin
I
SS
Internal current source
8.0
11.5
15
µA
Current Limit
I
LIM
Threshold
Current out of I
SEN
1
1.25
1.5
A
Resistance from ISEN to
SGND
130
m
Response time
150
ns
On Timer, RON/SD Pin
t
ON - 1
On-time
V
IN = 10V, RON = 200 k
2.1
2.75
3.4
µs
t
ON - 2
On-time
V
IN = 75V, RON = 200 k
290
390
496
ns
Shutdown threshold
Voltage at RON/SD rising
0.30
0.7
1.05
V
Threshold hysteresis
40
mV
www.national.com
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