lm25011myx National Semiconductor Corporation, lm25011myx Datasheet - Page 3

• Manufacturer Part Number: lm25011myx
• Description: 42v, 2a Constant On-time Switching Regulator With Adjustable Current Limit
• Manufacturer: National Semiconductor Corporation

Input (VIN Pin)
Switch Characteristics
Soft-Start Pin
Current Limit
On Timer, RT Pin
Off Timer
Regulation Comparator (FB Pin)
VIN to SGND (T
BST to SGND
SW to SGND (Steady State)
BST to SW
CS to CSG
CSG to SGND
PGD to SGND
SS to SGND
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Charateristics
over the full Operating Junction Temperature (T
statistical correlation. Typical values represent the most likely parametric norm at T
purposes only. Unless otherwise stated the following conditions apply: V
UVLO
UVLO
Symbol
R
V
t
t
t
t
ON
ON
ON
ON
V
V
DS(ON)
t
V
SS-SH
I
OFF
I
ILIM
REF
SS
IN
SS
- 1
- 2
- 3
- 4
VIN
GD
J
= 25°C)
Parameter
Input operating current
VIN under-voltage lock-out threshold
VIN under-voltage lock-out threshold
hysteresis
Buck Switch R
Gate Drive UVLO
UVLO
Pre-charge switch voltage
Pre-charge switch on-time
Pull-up voltage
Internal current source
Shutdown Threshold
Threshold voltage at CS
CS bias current
CSG bias current
On-time
On-time
On-time (current limit)
On-time
Minimum Off-time
FB regulation threshold
FB bias current
GD
Hysteresis
DS(ON)
Specifications with standard type are for T
-0.3V to 0.3V
-0.3V to 0.3V
(Note 1)
J
-1.5V to 45V
) range. Minimum and Maximum limits are guaranteed through test, design, or
-0.3V to 7V
-0.3V to 7V
-0.3V to 3V
45V
52V
Conditions
Non-switching, FB = 3V
VIN Increasing
I
BST-SW
I
FB = 3V
FB = 3V
V
V
V
V
SS pin = steady state
FB = 3V
TEST
TEST
IN
IN
IN
IN
3
= 12V, R
= 32V, R
= 12V, R
= 12V, R
= 200 mA
= 10 mA into SW pin
RT to SGND
FB to SGND
ESD Rating (Note 2)
Lead Temperature (soldering 4 sec)
Storage Temperature Range
Junction Temperature
VIN Voltage
Junction Temperature
Operating Ratings
Human Body Model
IN
T
T
T
T
= 12V, R
= 50 kΩ
= 50 kΩ
= 50 kΩ
= 301 kΩ
J
T
= 25°C, and are provided for reference
= 50 kΩ.
J
= 25°C only; limits in boldface type apply
-146
2.46
Min
150
(Note 1)
4.6
2.4
70
90
1200
1020
2.51
-130
-120
2.51
Typ
200
350
120
140
200
100
150
100
5.3
0.3
3.4
1.4
-35
10
75
–40°C to +125°C
-65°C to +150°C
1600
www.national.com
6.0V to 42V
Max
-115
2.56
-0.3V to 1V
-0.3V to 7V
250
208
5.9
0.6
4.4
260°C
150°C
Units
2kV
mV
mV
mV
mV
µA
µA
µA
µA
nA
ns
ns
ns
ns
ns
ns
V
Ω
V
V
V
V