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SD42527 PDF даташит

Спецификация SD42527 изготовлена ​​​​«Silan» и имеет функцию, называемую «1A HIGH POWER LED DRIVER».

Детали детали

Номер произв SD42527
Описание 1A HIGH POWER LED DRIVER
Производители Silan
логотип Silan логотип 

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SD42527 Даташит, Описание, Даташиты
SD42527_Datasheet
1A HIGH POWER LED DRIVER WITH 6~60V INPUT
DESCRIPTION
The SD42527 is a step-down PWM control LED driver with a built-
in power MOSFET. It achieves 1A continuous output current in
6~60V input voltage range. It provides thermal shutdown circuit,
current limit circuit and PWM dimming circuit.
The SD42527 adopts current mode control which provides fast
transient response, excellent constant current characteristic and
simple loop stabilization design. It has high efficiency up to 96%,
and has excellent constant current characteristic. When the
input/output voltage changed, the output current change rate is
within ±1.5%.
SOP-8-225-1.27
ESOP-8-225-1.27
(with heatsink at the bottom)
FEATURES
* 660V input voltage range;
* Maximum 1A output current;
* 0.60Ω built-in power MOSFET;
* Integrate Jitter function;
* Thermal compensation;
* PWM dimming function;
* 300kHz fixed frequency;
* Output current accuracy between ICs: ±3%;
* High efficiency up to 96%;
* Over temperature protection;
* Cycle-by-cycle over current protection.
* Dedicated current limit
* Open-circuit detection & protection
* ADJ voltage detection
* Short-circuit protection
* 90% Maximum duty cycle operation
APPLICATIONS
* LED building illumination;
* LED street lamp.
ORDERING INFORMATION
Part No.
SD42527
SD42527TR
SD42527E
SD42527ETR
Package
SOP-8-225-1.27
SOP-8-225-1.27
ESOP-8-225-1.27
ESOP-8-225-1.27
Marking
SD42527
SD42527
SD42527E
SD42527E
Material
Pb free
Pb free
Pb free
Pb free
Packing
Tube
Tape&Reel
Tube
Tape&Reel
HANGZHOU SILAN MICROELEC TRONICS CO.,L TD
Http://www.silan.com.cn
REV:1.1
201 1.08.02
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SD42527 Даташит, Описание, Даташиты
SD42527_Datasheet
BLOCK DIAGRAM
43
VIN SENSE
5
COMP
7
VDD
ADJ
8
Current
setting
6 PWM
PWM
Control
Gm
Amplifier
Internal
reference
OSC
CLK
S
PWM
comparator
Q
Vgate
Driver
SW
1
M1
RR
Slope
compensation
Current
limit
Current
limiting
comparator
Isense
GND
2
ABSOLUTE MAXIMUM RATING
Characteristics
Supply Voltage
Switch Voltage
PWM Voltage
Comp Voltage
ADJ Voltage
VDD Voltage
SENSE voltage
Junction Temperature
Lead Temperature
Operating Temperature Range
Storage Temperature Range
Symbol
VIN
VSW
VPWM
VCOMP
VADJ
VDD
VSENSE
Tj
TL
TOPR
TSTG
Ratings
60
80
-0.3~6
-0.3~6
-0.3~6
-0.3~6
-0.3~VIN
150
260
-20~85
-40~125
Unit
V
V
V
V
V
V
V
°C
°C
°C
°C
ELECTRICAL CHARACTERISTICSUnless otherwise specified, VIN=12V, IOUT=700mA,Tamb=25°C
Characteristics
Supply Voltage
Operating Current
Upper Switch Leakage
Symbol
VIN
IIN
IL
Test Condition
VIN=6/60V, VPWM=5V
VSW=80V
Min.
6
--
--
Typ.
--
1.4
0
Max.
60
2.0
5
Unit
V
mA
μA
HANGZHOU SILAN MICROELEC TRONICS CO.,L TD
Http://www.silan.com.cn
REV:1.1
201 1.08.02
Page 2 of 13









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SD42527 Даташит, Описание, Даташиты
SD42527_Datasheet
Characteristics
Current Limit
Maximum Duty Cycle
Oscillator Frequency
PWM Dimming on Voltage
PWM Dimming Off Voltage
PWM pull-up current
PWM pull-down current
COMP Clamp Voltage
Switch Transistor on
Resistance
VDD voltage
ADJ threshold voltage
ADJ off voltage value
ADJ on voltage value
Sense voltage threshold
value
Over temperature protection
threshold value
Over temperature protection
recovery value
Symbol
ILIM
Dmax
fosc
VPWMON
VPWMOFF
IPWM1
IPWM2
VCOMP
Test Condition
VIN=VSENSE=12V
VPWM is from 0V to 5V On
voltage
VPWM is from 5V to 0V Off
voltage
VPWM=0V
VPWM=5V
Open without load
Min.
1.4
85
270
2.2
1.9
--
20
--
RON 1LED, IOUT=0.5A
--
VDD
VADJ
VADJOFF
VADJON
VIN-VSENSE
No load
VADJ is from 5V to 0V,
when output current
decreases
VADJ decreases from 1 V
to 0V
VADJ increases from 0V to
1V
Voltage difference of VIN
and VSENSE
5.3
1.20
--
--
--
TOVP
Temperature increases
--
TRECOVERY Temperature decreases
--
Typ.
1.6
90
300
2.4
Max.
1.8
--
330
2.6
2 2.1
0 --
30 40
0 --
0.6 0.8
5.5 5.7
1.22 1.25
80 --
90 --
100 --
150 --
130 --
Unit
A
%
kHz
V
V
μA
μA
V
Ω
V
V
mV
mV
mV
°C
°C
PIN CONFIGURATION
PIN DESCRIPTION
Pin No.
1
2
3
Pin Name
SW
GND
SENSE
I/O
I Power output.
O Ground.
I Current sense pin.
Description
HANGZHOU SILAN MICROELEC TRONICS CO.,L TD
Http://www.silan.com.cn
REV:1.1
201 1.08.02
Page 3 of 13










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