LM25085SDE/NOPB National Semiconductor, LM25085SDE/NOPB Datasheet - Page 5
![IC BUCK ADJ 8LLP](/photos/6/51/65153/pkg_sda08a_sml.jpg)
LM25085SDE/NOPB
Manufacturer Part Number
LM25085SDE/NOPB
Description
IC BUCK ADJ 8LLP
Manufacturer
National Semiconductor
Series
PowerWise®r
Type
Step-Down (Buck), Invertingr
Datasheet
1.LM25085MYENOPB.pdf
(24 pages)
Specifications of LM25085SDE/NOPB
Design Resources
LM(2)5085 Quick Start Calculator
Internal Switch(s)
No
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
1.25 ~ 42 V
Frequency - Switching
Up to 1MHz
Voltage - Input
4.5 ~ 42 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-LLP
Power - Output
250mW
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output
-
Other names
LM25085SDE
LM25085SDE
LM25085SDETR
LM25085SDE
LM25085SDETR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Off-Time
Regulation and Over-Voltage Comparators (FB Pin)
Soft-Start Function
Thermal Shutdown
Thermal Resistance
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the
device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin.
Note 3: V
Note 4: For detailed information on soldering plastic MSOP and LLP packages refer to the Packaging Data Book available from National Semiconductor
Corporation.
Note 5: Tested on a 4 layer JEDEC board. Four vias provided under the exposed pad. See JEDEC standards JESD51-5 and JESD51-7.
Note 6: Operating current and shutdown current do not include the current in the R
Note 7: The tolerance of the minimum on-time (t
variations. A device which has an on-time at the high end of the range will have an off-time that is at the high end of its range.
Symbol
t
t
t
t
OFF(CL1)
OFF(CL2)
OFF(CL3)
OFF(CL4)
V
T
V
T
θ
θ
I
t
REF
HYS
FB
SS
OV
SD
JC
JA
CC
provides self bias for the internal gate drive.
Parameter
Off-time (current limit)
FB regulation threshold
FB over-voltage threshold
FB bias current
Soft-start time
Junction shutdown temperature
Junction shutdown hysteresis
Junction to ambient, 0 LFPM air
flow
Junction to case, 0 LFPM air flow
(Note
(Note
5)
5)
ON
(Note
-4) and the current limit off-times (t
7)
Conditions
VIN = 12V, V
VIN = 12V, V
VIN = 24V, V
VIN = 24V, V
Measured with respect to V
Junction temperature rising
MSOP-8 package
MSOP-8EP package
LLP-8 package
MSOP-8 package
MSOP-8EP package
LLP-8 package
5
FB
FB
FB
FB
T
resistor.
OFF(CL1)
= 0V
= 1V
= 0V
= 1V
through (t
REF
OFF(CL4)
) track each other over process and temperature
1.225
5.35
1.42
2.22
Min
8.9
1.4
1.25
Typ
350
170
126
7.9
1.9
3.2
2.5
5.5
9.1
13
10
20
46
54
29
10.84
1.275
Max
3.03
17.7
4.68
4.3
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Units
°C/W
°C/W
mV
ms
nA
µs
µs
µs
µs
°C
°C
V