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LED5000 датащи(PDF) 8 Page - STMicroelectronics

номер детали LED5000
подробное описание детали  3 A monolithic step-down current source with dimming capability
PDF  52 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LED5000 датащи(HTML) 8 Page - STMicroelectronics

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Electrical characteristics
LED5000
8/51
Doc ID 023951 Rev 1
3
Electrical characteristics
All tests performed at TJ = 25 °C, VCC = 12 V, VINH =0 V unless otherwise specified. The
specification is guaranteed from (-40 to +125) TJ temperature range by design,
characterization and statistical correlation.
Table 5.
Electrical characteristics
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
VIN
Operating input
voltage range
5.5
48
V
RDS(on)
MOSFET on
resistance
ISW=1 A
0.2
0.4
Ω
ISW
Maximum limiting
current
3.7
4.5
5.2
A
tHICCUP Hiccup time
16
ms
fSW
Switching frequency
600
850
1000
kHz
Duty cycle
(1)
90
%
TON MIN
Minimum conduction
time of the power
element
(1)
90
ns
TOFF MIN
Minimum conduction
time of the external
diode
(1)
75
90
120
ns
DC characteristics
VFB
Voltage feedback
194
200
206
mV
IFB
FB biasing current
50
nA
Iq
Quiescent current
VDIM>1.5 V
1.3
2
mA
VDIM>1.5 V, VIN=48 V
1.7
2.4
mA
Iqst-by
Standby quiescent
current
VINH>1.5 V
12
16
34
μA
Inhibit
VINH
Inhibit levels
Device ON
VIN=5.5 V to 48 V
0.5
V
Device OFF
VIN=5.5 V to 48 V
1.5
V
IINH
Inhibit biasing current
VINH=5 V
0.7
1.6
2.5
μA



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