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L6984ATR Scheda tecnica(PDF) 7 Page - STMicroelectronics

Il numero della parte L6984ATR
Spiegazioni elettronici  36 V 400 mA synchronous step-down switching regulator
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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L6984
Electrical characteristics
34
2
Electrical characteristics
TJ = 25 °C, VIN = VEN = 12 V, VBIAS = 3.3 V unless otherwise specified.
Table 5. Electrical characteristics
Symbol
Parameter
Test condition
Min.
Typ.
Max. Unit
VIN
Operating input voltage range
4.5
36
V
VIN_UVLO UVLO thresholds
rising edge VCC regulator
VBIAS = GND
3.1
3.8
4.5
falling edge VCC regulator
VBIAS = GND
2.9
3.6
4.3
VOUT
Fixed output voltage valley
regulation
FB = VCC, no load
3.23
3.3
3.37
VFB
Adjustable output voltage
valley regulation
No load, VBIAS = 3.3 V
0.88
0.9
0.92
RDSON HS High-side RDSON
ISW = 0.1 A
0.9
1.3
1.7
RDSON LS Low-side RDSON
ISW = 0.1 A
0.6
1.0
1.4
Current limit and zero crossing comparator
IVY
Valley current limit
350
400
470
mA
IZCD
Zero crossing current threshold
(1)
12
27
46
VCC regulator
VCC
VCC voltage
VFB = 1 V, VBIAS = GND
3
3.8
4.6
V
VBIAS
VBIAS falling threshold
2.4
2.6
2.8
VBIAS rising threshold
2.6
2.9
3.2
Power consumption
ISHTDWN Shutdown current from VIN
EN = GND
3
13
22
A


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