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LM3402 Scheda tecnica(PDF) 6 Page - Texas Instruments

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Il numero della parte LM3402
Spiegazioni elettronici  0.5A Constant Current Buck Regulator
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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LM3402, LM3402HV
SNVS450F – SEPTEMBER 2006 – REVISED OCTOBER 2015
www.ti.com
Electrical Characteristics (continued)
VIN = 24 V unless otherwise indicated. Typical values apply over –40°C ≤ TJ ≤ 125°C; minimum and maximum values apply
over the full operating temperature range
(1)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
N-MOSFET AND DRIVER
ISW = 200 mA, BOOT-SW = 6.3
RDS-ON
Buck Switch ON Resistance
0.7
1.5
Ω
V
BOOT Undervoltage Lockout
VDR-UVLO
BOOT–SW Increasing
1.7
3
4
V
Threshold
BOOT Undervoltage Lockout
VDR-HYS
BOOT–SW Decreasing
400
mV
Hysteresis
THERMAL SHUTDOWN
TSD
Thermal Shutdown Threshold
165
°C
TSD-HYS
Thermal Shutdown Hysteresis
25
°C
6.6 Timing Requirements
MIN
NOM
MAX
UNIT
tON-1
ON-time 1, VIN = 10 V, RON = 200 kΩ
2.1
2.75
3.4
µs
ON-time 2, VIN = 40 V, RON = 200 kΩ
LM3402
490
650
810
tON-2
ns
ON-time 2, VIN = 70 V, RON = 200 kΩ
LM3402HV
290
380
470
6
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Product Folder Links: LM3402 LM3402HV


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