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LM25085A bảng dữ liệu(PDF) 5 Page - Texas Instruments

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LM25085A
www.ti.com
SNVS601A – JANUARY 2009 – REVISED MARCH 2009
Electrical Characteristics (continued)
Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature (TJ) range of -40°C
to +125°C. Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values
represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise
stated the following conditions apply: VIN = 24V, RT = 100 kΩ.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
tSS
Soft-start time
1.16
1.8
3.15
ms
Thermal Shutdown
TSD
Junction shutdown temperature
Junction temperature rising
170
°C
THYS
Junction shutdown hysteresis
20
°C
Thermal Resistance
θJA
Junction to ambient, 0 LFPM air
MSOP-8 package
126
°C/W
flow (3)
MSOP-8EP package
46
LLP-8 package
54
θJC
Junction to case, 0 LFPM air flow
MSOP-8 package
29
°C/W
(3)
MSOP-8EP package
5.5
LLP-8 package
9.1
(3)
Tested on a 4 layer JEDEC board. Four vias provided under the exposed pad. See JEDEC standards JESD51-5 and JESD51-7.
Copyright © 2009, Texas Instruments Incorporated
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