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LM34910CSDX/NOPB Datenblatt(PDF) 4 Page - Texas Instruments

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Teilenummer LM34910CSDX/NOPB
Bauteilbeschribung  High Voltage (50V, 1.25A) Step Down Switching Regulator
PDF  19 Pages
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Hersteller  TI [Texas Instruments]
Direct Link  http://www.ti.com
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LM34910CSDX/NOPB Datenblatt(HTML) 4 Page - Texas Instruments

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LM34910C
SNVS517B – MAY 2007 – REVISED MARCH 2013
www.ti.com
Electrical Characteristics (continued)
Specifications with standard typeface are for TJ = 25°C, and those with boldface type apply over full Operating Junction
Temperature range. VIN = 24V, RON = 200k unless otherwise stated
(1).
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Softstart Pin
Pull-up voltage
2.5
V
Internal current source
11.5
µA
Current Limit
ILIM
Threshold
Current out of ISEN
1
1.25
1.5
A
Resistance from ISEN to SGND
130
m
Ω
Response time
150
ns
On Timer
tON - 1
On-time
VIN = 10V, RON = 200 kΩ
2.1
2.75
3.6
µs
tON - 2
On-time
VIN = 50V, RON = 200 kΩ
560
ns
Shutdown threshold
Voltage at RON/SD rising
0.35
0.65
1.1
V
Threshold hysteresis
Voltage at RON/SD falling
40
mV
Off Timer
tOFF
Minimum Off-time
280
ns
Regulation and Over-Voltage Comparators (FB Pin)
VREF
FB regulation threshold
SS pin = steady state
2.440
2.5
2.550
V
FB over-voltage threshold
2.875
V
FB bias current
100
nA
Thermal Shutdown
TSD
Thermal shutdown temperature
175
°C
Thermal shutdown hysteresis
20
°C
4
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Product Folder Links: LM34910C



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