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LM5010A Datasheet(PDF) 5 Page - Texas Instruments

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Part # LM5010A
Description  High-Voltage 1-A Step-Down Switching Regulator
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM5010A Datasheet(HTML) 5 Page - Texas Instruments

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LM5010A
LM5010A-Q1
www.ti.com
SNVS376D – OCTOBER 2005 – REVISED DECEMBER 2008
Electrical Characteristics (continued)
Specifications with standard type are for TJ = 25°C only; limits in boldface type apply over the full Operating Junction
Temperature (TJ) range. Minimum and Maximum limits are specified 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 = 48V, RON = 200kΩ. See
(1).
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Switch Characteristics
RDS(on)
Buck Switch RDS(on) at ISW = 200
TJ ≤ 125°C
0.35
0.80
mA
TJ ≤ 150°C
0.85
UVLOGD
Gate Drive UVLO
VBST - VSW Increasing
1.7
3.0
4.0
V
UVLOGD hysteresis
400
mV
SOFT-START Pin
ISS
Internal current source
8.0
11.5
15
µA
Current Limit
ILIM
Threshold
Current out of ISEN
1
1.25
1.5
A
Resistance from ISEN to SGND
130
m
Response time
150
ns
On Timer, RON/SD Pin
tON - 1
On-time
VIN = 10V, RON = 200 kΩ
2.1
2.75
3.4
µs
tON - 2
On-time
VIN = 75V, RON = 200 kΩ
290
390
496
ns
Shutdown threshold
Voltage at RON/SD rising
0.30
0.7
1.05
V
Threshold hysteresis
40
mV
Off Timer
tOFF
Minimum Off-time
260
ns
Regulation and Over-Voltage Comparators (FB Pin)
VREF
FB regulation threshold
TJ ≤ 125°C
2.445
2.50
2.550
V
TJ ≤ 150°C
2.435
FB over-voltage threshold
2.9
V
FB bias current
1
nA
Thermal Shutdown
TSD
Thermal shutdown temperature
175
°C
Thermal shutdown hysteresis
20
°C
Thermal Resistance
θJA
Junction to Ambient, 0 LFPM Air
LLP-10 Package
40
°C/W
Flow
TSSOP-14EP Package
40
θJC
Junction to Case
LLP-10 Package
5.2
°C/W
TSSOP-14EP Package
5.2
Copyright © 2005–2008, Texas Instruments Incorporated
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