MAX16824 반도체 회로 부품 판매점
(MAX16824 / MAX16825) Three-Channel Linear High-Brightness LED Drivers
|
|
 Maxim Integrated Products |
19-1107; Rev 0; 11/07
High-Voltage, Three-Channel Linear
High-Brightness LED Drivers
www.datasheet4u.com
General Description
The MAX16824/MAX16825 three-channel LED drivers
operate over a 6.5V to 28V input voltage range. These
devices provide three open-drain constant-current-sink-
ing outputs that are rated to 36V and deliver up to
150mA of current to each string of high-brightness LEDs
(HB LEDs). The current at each output is programmable
by means of an external current-sense resistor. The
MAX16824 features three PWM inputs that control the
duty cycle of the output current, allowing a wide LED
dimming range to be implemented. The PWM inputs
also function as on/off control for each corresponding
output. The MAX16825 offers a 2Mbps, 4-wire serial
interface, a 3-bit shift register, and a 3-bit transparent
latch. The serial interface allows a microcontroller to
configure the output channels using four inputs (DIN,
CLK, LE, OE) and a data output (DOUT). DOUT allows
multiple drivers to be cascaded and operated together.
The MAX16824/MAX16825’s on-board pass elements
minimize the need for external components, while at the
same time, providing ±5% LED current accuracy.
Additional features include a +5V (±5%) regulated output
with 4mA output current capability and thermal protection.
The MAX16824/MAX16825 are available in a thermally
enhanced 16-pin TSSOP-EP package and specified over
the -40°C to +85°C temperature range.
Applications
Industrial Lighting
Architectural and Decorative Lighting
Mood Lighting
Indoor and Outdoor LED Video Displays
Automotive Lighting
LCD Display Backlighting
VIN
CIN
UP TO 36V
3 IN
OUT1 1
7 PWM1 MAX16824
8 OUT2 16
PWM2
9
PWM3
4 REG
CREG
11 GND
OUT3
CS1
CS2
CS3
12
2
15
13
RCS3
RCS2
RCS1
Features
♦ 6.5V to 28V Operating Range
♦ Outputs Connected to 36V Supply for Long LED
Strings
♦ Three 36V-Rated Output Channels with
Independently Adjustable LED Current
♦ 150mA Output Current Per Channel
♦ ±5% LED Current Accuracy
♦ PWM Dimming
Three Independent Dimming Control Inputs
(MAX16824)
4-Wire Serial Interface LED Current Chopping
(MAX16825)
♦ +5V (±5%) Regulated Output with 4mA Source
Capability
♦ Fast Transient Dimming Response
♦ 200mV Current-Sense Reference Reduces Power
Loss
♦ Thermal Shutdown
♦ -40°C to +85°C Operating Temperature Range
♦ Thermally Enhanced, 16-Pin TSSOP Exposed
Paddle Package
Ordering Information
PART
TEMP RANGE
PIN
PACKAGE
PKG
CODE
MAX16824EUE+ -40°C to +85°C 16 TSSOP-EP* U16E-3
MAX16825EUE+ -40°C to +85°C 16 TSSOP-EP* U16E-3
+Denotes a lead-free package.
*EP = Exposed paddle.
Pin Configurations appear at end of data sheet.
Typical Operating Circuits
VIN UP TO 36V
CIN
MICROCONTROLLER
CREG
3 IN
MAX16825 OUT1 1
6
CLK
7
DIN
8
LE
9
OE
4
REG
11
GND
OUT2
OUT3
CS1
CS2
16
12
2
15
13
CS3
RCS2
RCS1
RCS3
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
High-Voltage, Three-Channel Linear
High-Brightness LED Drivers
www.daAtasBheSeOt4uL.cUomTE MAXIMUM RATINGS
IN to GND ...............................................................-0.3V to +30V
OUT1, OUT2, OUT3 to GND ..................................-0.3V to +40V
CS1, CS2, CS3, REG to GND...................................-0.3V to +6V
PWM1, PWM2, PWM3 to GND .................................-0.3V to +6V
DIN, CLK, LE, OE, DOUT to GND ............................-0.3V to +6V
Maximum Current into Any Pin
(except OUT1, OUT2, OUT3) ........................................±20mA
Maximum Current into OUT1, OUT2, OUT3......................160mA
Continuous Power Dissipation (TA = +70°C)
16-Pin TSSOP-EP (derate 18.9mW/°C above +70°C)....1500mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = 12V, CREG = 1µF to GND, IREG = 0, RCS_ = 2Ω from CS_ to GND, TJ = TA = -40°C to +85°C, unless otherwise noted. Typical
values are at TJ = TA = +25°C.) (Note 1)
PARAMETER
Supply Voltage Range
GND Current
LED Current-Sense Accuracy
(Note 2)
SYMBOL
VIN
IGND
Dropout Voltage (Note 3)
ΔVDO
Output Current Slew Rate
Output Current Leakage
CURRENT SENSE
ILEAK
Regulated CS_ Voltage
VCS_
OVERTEMPERATURE PROTECTION
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
+5V REGULATOR (REG)
Output Voltage
VREG
REG Output Current
REG Short-Circuit Current
IREG
IREGSC
LOGIC INPUT (PWM1, PWM2, PWM3)
PWM_ Input Bias Current
PWM_ Input-Voltage High
IPWM
VIH
PWM_ Input-Voltage Low
PWM_ Turn-On Delay
VIL
PWM_ Turn-Off Delay
CONDITIONS
IOUT1 = IOUT2 = IOUT3 =100mA
10mA < IOUT_ < 100mA,
0°C ≤ TJ ≤ 85°C
10mA < IOUT_ < 100mA,
-40°C ≤ TJ ≤ 85°C
IOUT_ = 100mA (current pulsed)
IOUT_ = 150mA (current pulsed)
Current rising, VOUT = 4V
PWM1 = PWM2 = PWM3 = 0V
VCS1 = VCS2 = VCS3 , 0°C ≤ TJ ≤ +85°C
VCS1 = VCS2 = VCS3 , -40°C ≤ TJ ≤ +85°C
IREG = 0mA (Note 4)
4.75V < VREG
VREG = 0V (Note 5)
VPWM1 = VPWM2 = VPWM3 = 5V
50% of VPWM_ to 50% of ΔVOUT_
50% of VPWM_ to 50% of ΔVOUT_
MIN TYP MAX UNITS
6.5 28.0 V
5 10 mA
5
%
7
0.75 1.5
1.2 2.25
V
100 mA/µs
1 µA
190 200 210
186 200 214
mV
165 °C
23 °C
4.75 5 5.25 V
4 mA
15 40 90 mA
1 µA
4V
0.6 V
475 ns
150 ns
2 _______________________________________________________________________________________
|
PDF 파일 내의 페이지 : 총 14 페이지
제조업체: Maxim Integrated Products
( maxim )
MAX16824 led
데이터시트 다운로드 :
[ MAX16824.PDF ]
[ MAX16824 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
MAX1682
Switched-Capacitor Voltage Doublers - Maxim Integrated
MAX1682-MAX1683
Switched-Capacitor Voltage Doublers - Maxim Integrated
MAX16820
2MHz High-Brightness LED Drivers - Maxim Integrated Products
MAX16821A
High-Power Synchronous HBLED Drivers - Maxim Integrated Products
MAX16821B
High-Power Synchronous HBLED Drivers - Maxim Integrated Products
MAX16821C
High-Power Synchronous HBLED Drivers - Maxim Integrated Products
MAX16823
3-Channel Linear High-Brightness LED Driver - Maxim Integrated Products
MAX16824
(MAX16824 / MAX16825) Three-Channel Linear High-Brightness LED Drivers - Maxim Integrated Products
MAX16825
(MAX16824 / MAX16825) Three-Channel Linear High-Brightness LED Drivers - Maxim Integrated Products