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LC5205D 数据表(PDF) 2 Page - Allegro MicroSystems

部件名 LC5205D
功能描述  LED Drivers
Download  15 Pages
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制造商  ALLEGRO [Allegro MicroSystems]
网页  http://www.allegromicro.com
标志 ALLEGRO - Allegro MicroSystems

LC5205D 数据表(HTML) 2 Page - Allegro MicroSystems

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Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
48102.002
LED Drivers
LC5200 Series
Recommended Operating Conditions
Characteristic
Symbol
Conditions
Min.
Typ.
Max.
Unit
Supply Voltage
VBB
Lowest voltage can vary depending on LED
loads
25
400
V
Average Output Current
IO
LC5205D
0.4
A
LC5210D
0.8
A
REF Input Voltage
VREF
In normal operation
0.5
V
Case Temperature
TC
Measured at center of case, TJ < 150°C
105
°C
Absolute Maximum Ratings at TA = 25°C
Characteristic
Symbol
Notes
Rating
Units
Supply Voltage
VBB
450
V
Output Breakdown Voltage
VO
450
V
Output Current
IO
LC5205D, tw ≥ 1 μs
0.5
A
LC5210D, tw ≥ 1 μs
1.0
A
REF Pin Input Voltage
VREF
–0.3 to VREG + 0.3
V
SENSE Pin Voltage
VRS
tw ≥ 1 μs±2
V
Allowable Power Dissipation
PD
On Sanken evaluation PCB; affected by applica-
tion PCB layout
1.73
W
Junction Temperature
TJ
150
ºC
Operating Ambient Temperature
TA
–40 to 105
ºC
Storage Temperature
Tstg
–40 to 150
ºC
Selection Guide
Part Number
Output Current, IO(max)
(A)
LC5205D
0.5
LC5210D
1.0
All performance characteristics given are typical values for
circuit or system baseline design only and are at the nominal
operating voltage and an ambient temperature of 25°C, un-
less otherwise stated.
Terminal List Table
Name
Number
Function
Reg
1
Regulator output pin for powering external components. Connect 0.1 μF bypass
capacitor between this pin and GND.
Toff
2
For self-oscillation operation, connect external capacitor and resistor to set
off-time. For externally-controlled PWM operation, input PWM adjustment signal.
Ref
3
Reference voltage input pin, for output peak current.
Sen
4
Connect external resistor for PWM peak current control and OCP.
OUT
5
Internally connected to the MOSFET drain, output connection to LED load.
VBB
6
Supply voltage pin; internally connected to the voltage regulator to power the
internal circuits.
7
No connection; pin removed to increase creepage distance from VBB pin.
GND
8
Device ground pin.
Pin-out Diagram
1
2
3
4
8
7
6
5
GND
(Removed)
VBB
OUT
Reg
Toff
Ref
Sen


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