ADT6051

Dimmable Constant Current / Constant Voltage IC
ADT6051
ADT6051
Preliminary
Data Sheet
Date
2014. 9. 17
Rev
Pre 0.6
Originated By
J. H. Ryu
Modified By
-
Checked By
S. K. Lee
Approved By
K. Y. Lee
* This specifications are subject to be changed without notice
SEP. 17. 2014 / Preliminary
1/6
http://www.ad-tech.co.kr
Dimmable Constant Current / Constant Voltage IC
ADT6051
Revision History
Rev. Number
Date
Rev. Contents
Pre 0.0
2014. 03. 26
-. Preliminary
Pre 0.1
2014. 05. 15
-. Page 3 오타 수정 (ADT6031ADTd6051)
-. Page3 하단 글꼴 변경
-. Page4 Pin configuration 그림 & 표 수정
-. Page4 Block diagram 수정
-. Page5 Absolute maximum ratings Open Drain Output 수정 (6V60V)
-. Page5 Electrical characteristics 수정
Pre 0.2
2014. 05. 27
-. Page5 PWM pin output current 명칭 변경 ( Pull up current)
-. Page5 ADIM pin input current test condition 수정 (ADIM=5V  1V)
-. Page5 Transconduction gain 명칭 변경 ( Transconductance)
Pre 0.3
2014. 05. 29
-. Page5 Voltage control loop 오타 수정 (Current sensingVoltage sensing)
Pre 0.4
2014. 07. 22
-. Page5 ISEN reference voltage test condition 변경(2mA100uA)
-. Page5 VSEN reference voltage test condition 변경(2mA100uA)
-. Page5 OUT pin current limit 변경 (typ 6mA  typ 7.5mA)
Pre 0.5
2014. 09. 12
-. Page3 General Description 수정 (VCCOVP 소개 추가)
-. Page3 Features 수정 (VCCOVP 추가)
-. Page4 Simplified Block Diagram 수정 (PWM pull up res=2.4MΩ600kΩ)
-. Page4 Simplified Block Diagram 수정 (VCCOVP 추가)
-. Page5 Electrical characteristics 수정 (VCCOVP 추가)
-. Page5 Electrical characteristics 수정 (VCC range 수정=8~60V8~56V)
-. Page5 Electrical characteristics 수정 (OUT VOL 수정=0.6V0.7V)
-. Page5 Electrical characteristics 수정 (OUT Limit 수정=7.5mA6.0mA)
Pre 0.6
2014. 09. 17
-. Page5 Electrical characteristics 수정 (PWM LED ON/OFF 추가)
* This specifications are subject to be changed without notice
SEP. 17. 2014 / Preliminary
2/6
http://www.ad-tech.co.kr
Dimmable Constant Current / Constant Voltage IC
Dimmable CC / CV IC for LED Lighting
ADT6051
ADT6051
GENERAL DESCRIPTION
The ADT6051 is a constant current and constant voltage IC for stable LED driving in a
secondary side. This IC is suitable for applications that require power line isolation for safety
and reliability, high conversion efficiency, as well as high LED current accuracy.
The ADT6051 contains 1) a constant current regulating amplifier with 300mV threshold and
within 1% current accuracy; 2) an VCC over voltage comparator to protect the IC when LED
string is open or broken; 3) a PWM and analog dimming control for LED lighting system;
4) and a DC output pin for driving an opto-coupler or sourcing power for the other devices.
The ADT6051 is offered in SOP8 package.
FEATURES
•
•
•
•
•
•
•
•
•
•
APPLICATIONS
Secondary side LED current regulation
Operating range up to 60V
LED Current accuracy ≤ ±1%
Analog dimming control
PWM dimming control
DC 5V output
DC 5V output short protection
VCC over voltage protection
Over temperature protection
SOP8 package
• Isolated LED lighting
• Dimmable LED lighting
TYPICAL APPLICATION CIRCUIT
AC
•
•
•
•
•
•
•
VCC
LED
•
INV
GD
•
PWM
ADIM
Q1
DC5V
•
ADT6011
VSEN
• •
ADT6051
ISEN
•
•
COMP
•
OUT
GND
Figure 1. Typical Application Circuit
•
* This specifications are subject to be changed without notice
SEP. 17. 2014 / Preliminary
3/6
http://www.ad-tech.co.kr
Dimmable Constant Current / Constant Voltage IC
ADT6051
PIN CONFIGURATION
Pin Name
Description
1
ISEN
Constant current control input.
2
ADIM
Analog dimming input.
3
PWM
PWM dimming input.
4
GND
Ground.
5
VCC
Supply voltage input.
6
VSEN
Constant voltage control input
7
DC5V
5V LDO output
8
OUT
Open-drain output. Connects this pin to opto-coupler.
ISEN
1
ADIM
2
PWM
3
GND
4
ADT6051
Pin No.
8
OUT
7
DC5V
6
VSEN
5
VCC
SIMPLIFIED BLOCK DIAGRAM
•
•
•
VCC
•
•
DC5V
•
5V Regulator
VCCOVP
1V
•
VSEN
OUT
•
ISEN
•
•
•
1V
5V
0.3V
•
•
600kohm
• • •
Dimming
control
GND
•
PWM
150kohm
•
OTP
ADIM
100kohm
•
* This specifications are subject to be changed without notice
SEP. 17. 2014 / Preliminary
4/6
http://www.ad-tech.co.kr
Dimmable Constant Current / Constant Voltage IC
ADT6051
ABSOLUTE MAXIMUM RATINGS (Note1)
Parameter
Symbol
Rating
Units
Ground Voltage
GND
-0.3
V
Power Voltage
VCC
-0.3 ~ 60
V
Open Drain Output
OUT
-0.3 ~ 60
V
All Other pins
DC5V, VSEN, ISEN, PWM, ADIM
-0.3 ~ 6
V
Junction Temperature
TJ
-40 ~ 150
℃
Storage Temperature
TSTG
-65 ~ 150
℃
Thermal Resistance (Note2)
θJA
150
℃/W
Note1. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
Note2. Measured on JESD51-7, 4-layer PCB
ELECTRICAL CHARACTERISTICS
(VCC = 15V, Ta=25°C , unless otherwise specified)
Parameter
Conditions
Power supply operating range
Temperature
protection
56
V
56
58.5
61
V
10
11.5
V
ICC
-
0.5
1.0
mA
PWM input high level
VPWMH
1.5
-
-
V
PWM input low level
VPWML
-
-
0.8
V
PWM dimming frequency
FPWM
0.1
-
100
kHz
PWM duty range
DPWM
10
-
100
%
Threshold duty (LED OFF) (Note3)
DOFF
7
10
13
%
Threshold duty (LED ON) (Note3)
DON
12
15
18
%
IPULLUP
-
9
15
uA
Analog dimming input voltage
VADIM
0.1
-
1.0
V
Threshold voltage (LED OFF)
VOFF
0.07
0.1
0.13
V
V(ISEN)=V(VSEN)=0V
V(PWM)=0V
Threshold voltage (LED ON)
V(ADIM)=1V
VON
0.12
0.15
0.18
V
IADIM
-3
0
3
uA
GMISEN
-
9.5
-
V/A
Current sensing reference voltage
I(OUT)=100uA
VISEN
297
300
303
mV
Pin input current
V(ISEN)=5V
IISEN
-1
0
1
uA
Transconductance, Sink current only (Note3)
DC 5V output
15
8.5
Transconductance, Sink current only (Note3)
Output stage
8
VCCOVP
Pin input current
Voltage
control loop
VCC
Max. Units
VCCOVPOFF
Pull up current
Current
control loop
Typ.
V(ADIM)=0V
VCC quiescent current
Analog
dimming
Min.
V(ADIM)=1V
Device supply VCC OVP
PWM
dimming
Symbol
GMVSEN
-
5.2
-
V/A
Voltage sensing reference voltage
I(OUT)=100uA
VVSEN
0.95
1.00
1.05
V
Pin input current
V(VSEN)=5V
IVSEN
-1
0
1
uA
Lower output voltage, Sink current only
I(OUT)=1mA, V(ISEN)=1V
VOL
-
0.7
1.1
V
Output short circuit current.
V(OUT)=5V, V(ISEN)=1V
IOUTMAX
3
6
10
mA
DC 5V output voltage
I(DC5V)=5mA
VDC5V
4.5
5.0
5.5
V
Output short circuit current.
V(DC5V)=0V
IDC5Vmax
8
16
24
mA
OTP
-
150
-
℃
OTPHYS
-
30
-
℃
Over temperature protection (Note3)
OTP hysteresis (Note3)
Note 3 : The parameter is guaranteed by design. It is not tested in production.
* This specifications are subject to be changed without notice
SEP. 17. 2014 / Preliminary
5/6
http://www.ad-tech.co.kr
Dimmable Constant Current / Constant Voltage IC
ADT6051
PACKAGE DIMENSTION
* This specifications are subject to be changed without notice
SEP. 17. 2014 / Preliminary
6/6
http://www.ad-tech.co.kr