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LM3402MR Datasheet(PDF) 5 Page - Texas Instruments

No. de pieza LM3402MR
Descripción Electrónicos  0.5A Constant Current Buck Regulator for Driving High Power LEDs
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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LM3402MR Datasheet(HTML) 5 Page - Texas Instruments

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LM3402, LM3402HV
www.ti.com
SNVS450E – SEPTEMBER 2006 – REVISED MAY 2013
ELECTRICAL CHARACTERISTICS LM3402
VIN = 24V unless otherwise indicated. Typicals and limits appearing in plain type apply for TA = TJ = +25°C.
(1) Limits
appearing in boldface type apply over full Operating Temperature Range. Datasheet min/max specification limits are ensured
by design, test, or statistical analysis.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
SYSTEM PARAMETERS
tON-1
On-time 1
VIN = 10V, RON = 200 kΩ
2.1
2.75
3.4
µs
tON-2
On-time 2
VIN = 40V, RON = 200 kΩ
490
650
810
ns
(1)
Typical specifications represent the most likely parametric norm at 25°C operation.
ELECTRICAL CHARACTERISTICS LM3402HV
Symbol
Parameter
Conditions
Min
Typ
Max
Units
SYSTEM PARAMETERS
tON-1
On-time 1
VIN = 10V, RON = 200 kΩ
2.1
2.75
3.4
µs
tON-2
On-time 2
VIN = 70V, RON = 200 kΩ
290
380
470
ns
ELECTRICAL CHARACTERISTICS LM3402/LM3402HV
Symbol
Parameter
Conditions
Min
Typ
Max
Units
REGULATION AND OVER-VOLTAGE COMPARATORS
VREF-REG
CS Regulation Threshold
CS Decreasing, SW turns on
194
200
206
mV
VREF-0V
CS Over-voltage Threshold
CS Increasing, SW turns off
300
mV
ICS
CS Bias Current
CS = 0V
0.1
µA
SHUTDOWN
VSD-TH
Shutdown Threshold
RON / SD Increasing
0.3
0.7
1.05
V
VSD-HYS
Shutdown Hysteresis
RON / SD Decreasing
40
mV
OFF TIMER
tOFF-MIN
Minimum Off-time
CS = 0V
300
ns
INTERNAL REGULATOR
VCC-REG
VCC Regulated Output
6.6
7
7.4
V
VIN-DO
VIN - VCC Dropout
ICC = 5 mA, 6.0V < VIN < 8.0V
300
mV
VCC-BP-TH
VCC Bypass Threshold
VIN Increasing
8.8
V
VCC-BP-HYS
VCC Bypass Hysteresis
VIN Decreasing
225
mV
VCC-Z-6
VCC Output Impedance
VIN = 6V
55
(0 mA < ICC < 5 mA)
VCC-Z-8
VIN = 8V
50
VCC-Z-24
VIN = 24V
0.4
VCC-LIM
VCC Current Limit (Note 3)
VIN = 24V, VCC = 0V
16
mA
VCC-UV-TH
VCC Under-voltage Lock-out Threshold
VCC Increasing
5.25
V
VCC-UV-HYS
VCC Under-voltage Lock-out Hysteresis
VCC Decreasing
150
mV
VCC-UV-DLY
VCC Under-voltage Lock-out Filter Delay
100 mV Overdrive
3
µs
IIN-OP
IIN Operating Current
Non-switching, CS = 0V
600
900
µA
IIN-SD
IIN Shutdown Current
RON / SD = 0V
90
180
µA
CURRENT LIMIT
ILIM
Current Limit Threshold
530
735
940
mA
DIM COMPARATOR
VIH
Logic High
DIM Increasing
2.2
V
VIL
Logic Low
DIM Decreasing
0.8
V
IDIM-PU
DIM Pull-up Current
DIM = 1.5V
75
µA
Copyright © 2006–2013, Texas Instruments Incorporated
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Product Folder Links: LM3402 LM3402HV


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