LM25007_08 NSC [National Semiconductor], LM25007_08 Datasheet - Page 4

• Manufacturer Part Number: LM25007_08
• Description: 42V, 0.5A Step-Down Switching Regulator
• Manufacturer: NSC [National Semiconductor]

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Startup Regulator
V
V
Switch Characteristics
Current Limit
On Time Generator
CC
CC
VIN to RTN
BST to RTN
SW to RTN (Steady State)
ESD Rating (Note 5)
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
Specifications with standard type are for T
(T
the most likely parametric norm at T
conditions apply: V
Symbol
Human Body Model
J
Reg
Supply
) range. Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent
V
V
V
Voltage (V
V
V
Operating Current (I
Shutdown/Standby Current
Buck Switch Rds(on)
Gate Drive UVLO (VBST – VSW) Rising
Gate Drive UVLO Hysteresis
Current Limit Threshold
Current Limit Response Time
OFF time generator (test 1)
OFF time generator (test 2)
TON -1
TON -2
Remote Shutdown Threshold
Remote Shutdown Hysteresis
CC
CC
CC
CC
CC
Regulator Output
Current Limit
undervoltage Lockout
Undervoltage Hysteresis
UVLO Delay (filter)
IN
= 24V, R
CC
Parameter
increasing)
ON
CC
= 200kΩ. (Note 3).
)
J
= 25°C, and are provided for reference purposes only. Unless otherwise stated the following
45V
59V
-1V
2kV
J
= 25°C only; limits in boldface type apply over the full Operating Junction Temperature
(Note 4)
Non-Switching, FB = 3V
RON/SD = 0V
I
VBST −VSW = 6.3V
(Note 6)
I
to Switch Off
FB=0V, RCL = 100K
FB=2.3V, RCL = 100K
Vin = 10V
Ron = 200K
Vin = 40V
Ron = 200K
Rising
TEST
switch
(Note 1)
= 200mA,
Overdrive = 0.1A Time
Conditions
4
BST to V
BST to SW
VCC to RTN
All Other Inputs to RTN
Storage Temperature Range
V
Junction Temperature
Operating Ratings
IN
CC
2.15
0.45
Min
535
450
6.6
3.4
0.74
2.65
2.77
Typ
206
500
400
725
225
615
6.3
4.5
0.7
11
70
17
40
7
3
(Note 1)
Max
1.34
675
150
900
810
7.4
5.5
3.5
1.1
45V
14V
14V
-0.3 to 7V
-65°C to +150°C
−40°C to + 125°C
9V to 42V
Units
mA
mV
mV
mA
mV
µA
µA
µs
ns
µs
µs
µs
ns
Ω
V
V
V
V