ONSEMI ENA2186

Ordering number : ENA2186A
LV5012MD
Bi-CMOS LSI
LED Driver IC
http://onsemi.com
Overview
LV5012MD is a High Voltage LED drive controller which drives LED current with external MOS FET. LV5012MD is
realized a simple LED circuit with a few external parts and reduce circuit board space.
It corresponds to various dimming controls including the TRIAC dimming control without flickering. LV5012MD is
realized high efficiency due to low operation current.
Function
 High Voltage LED Controller
 Various Dimming Control
- TRIAC & Analog Input & PWM Input
 Fixed Switching Frequency [70 kHz]
 Multiple Internal Reference Voltage
-Auto Level Control Output & 0.45V & 0.1V
 Short Protection Circuit – [latch off]
 Over Voltage Protection – [auto recovery circuit]
 2Staged Thermal Protection– [auto recovery circuit]
 External Thermal Protection Adopted
 Built-in TRIAC Stabilized function.
MFP14S(225mil)
ORDERING INFORMATION
See detailed ordering and shipping information on page 16 of this data sheet.
Semiconductor Components Industries, LLC, 2013
October, 2013
O2313HK 20131009-S00002/51513HK No.A2186- 1/16
LV5012MD
Specifications
Maximum Ratings at Ta = 25C
Parameter
Symbol
Conditions
Ratings
unit
High Voltage Input
HV_abs
0.3 to 500
V
VIN pin
VINmax
0.3 to 40
V
0.3 to 7
V
0.3 to 40
V
ENB, CS, ACS, REF_OUT,
ALC_C, REF_IN
OUT Pin
Vout_abs
DML Pin OFF
VDL_OFF_abs
ACS=2.0V
500
V
DML Pin ON
VDL_ON_abs
ACS=0.7V, TRC=1.0V
55
V
Pd max
With specified board *1
0.95
W
Tj
150
C
Operating Junction temperature
Topj
30 to +125
C
Storage temperature
Tstg
40 to +150
C
Allowable power dissipation
Junction temperature
*1: Specified board = 64mm×24mm×1.2mm, glass epoxy board
Caution 1) Absolute maximum ratings represent the values which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high
temperature, high current, high voltage, or drastic temperature change, the reliability of the IC may be degraded.
Please contact us for the further details.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Recommended Operating Conditions at Ta = 25C
Parameter
Symbol
Input voltage
Conditions
VIN
Ratings
unit
8.5 to 24
V
Electrical Characteristics at Ta = 25C, VIN = 12V, unless otherwise specified.
Parameter
Symbol
Conditions
Ratings
min
typ
unit
max
 Reference Voltage block 
Built-in Reference Voltage
VREF
FET Turn-Off CS Voltage
VCS
VIN Regulation of CS Voltage
VCS_LN
ACS=2.0V
REF_IN=3V,
ALC_C=0V
VIN=8.5 to 24V,
REF_IN=3V
ACS=2.0V, ALC_C=0V
0.45
V
0.45
V
±0.5
%
REF_IN Input Range
REFIN_RNG
0
3.2
V
Minimum ALC_C Voltage
MIN_ALC_C
0.5
V
TRC pin voltage of operation start
TRC_STR
0.1
V
TRC pin voltage of operation stop
TRC_STP
0.05
V
 Under Voltage Lockout 
Operation Start Input Voltage
UVLOON
8
9
10
V
Operation Stop Input Voltage
UVLOOFF
6.3
7.3
8.3
V
Hysteresis Voltage
UVLOH
1.7
V
 Oscillation 
Frequency
FOSC
Maximum Duty
MAXDuty
61
70
79
kHz
70
%
 Comparator 
Input current
IIOCS
CS=0V
160
nA
Duty ON detection voltage
VDTYON
CS=0V, REF_IN=3V
1.7
V
Duty OFF detection voltage
VDTYOFF
CS=0V, REF_IN=3V
1.3
V
No.A2186-2/16
LV5012MD
 Thermal protection Circuit 
st
OTP
*Design guarantee
140
C
OTP
*Design guarantee
12
C
Reference voltage at 1 stage
REFOTP
*Design guarantee
0.1
V
Thermal shutdown Temperature
TSD
*Design guarantee
155
C
Thermal shutdown hysteresis
TSD
*Design guarantee
12
C
1000
mA
50
mA
200
mA
1 stage thermal protection
st
1 stage hysteresis
st
[ 1 stage to normal operation ]
st
 Drive Circuit 
OUT sink current
OUT source current1
(First step driving current)
OUT source current2
(Second step driving current)
IOI
IOO1
IOO2
VIN=12V,CS=3V,
OUT=2V
VIN=12V,CS=0V,
OUT=6V
VIN=12V,CS=0V,
OUT=6V
500
 Switching Stop Function 
Switching stop ENB Voltage
ENBSP
1.9
2.0
2.1
V
Switching start ENB Voltage
ENBST
1.7
1.8
1.9
V
ENB Hysteresis Voltage
ENBHY
0.2
V
0.85
V
 TRIAC Stabilization Circuit 
Threshold of DML Load
(Threshold of Bleeder)
VACS
Load Operation of the
DML pin is started,
when ACS pin is less
than this value.
DML Load current
IDML
DML=40V, ACS=0.7V
20
REF_OUT Voltage
REF_OUT
VIN=12V,
IREF_OUT=0.5mA
2.8
REF_OUT Load
IREF_OUT
VIN=12V
mA
 Reference Out Circuit 
3.0
3.2
V
1
mA
13
V
 Startup circuit 
Startup OUTPUT Voltage
VIN_OUT
ACS=2.0V,
Static startup current
IHV
ACS=2.0V,
OUT=OPEN,
CS=0.6V
11
12
1
mA
Leak current of Startup circuit
IHV2
HV=100V, VIN=15V
20
A
UVLO mode VIN current
ICCOFF
VIN=7V
100
A
LOW TRIAC Duty Current
ICCLTR
TRC=0V
250
A
Normal mode VIN current
IVIN
ACS=2.0V,
REF_IN=3V,
ALC_C=0V, CS=0.6V,
OUT=OPEN
1
mA
 VIN current 
 VIN Over Voltage protection (OVP) Circuit 
VIN Over Voltage protection Voltage
VINOVP
VIN Current at OVP
IINOVP
24
VIN=30V
27
30
10
V
mA
 CS pin abnormal sensing Circuit 
Abnormal sensing Voltage
CSOCP
1.7
1.9
2.1
V
No.A2186-3/16
LV5012MD
Block Diagram
DML
HV
Built-in HV
REGULATOR
VIN
Built-in
REGULATOR
UVLO
TSD
REF_OUT
3.0V
0.85V
0.45V
REFERENCE
VOLTAGE
OSCILLATOR
70kHz
0.1V
CS
REF_IN
S
+
-
CONTROL
LOGIC
OUT
Current Limit
Comparater
1.7V
1.3V
+
+
Q
R
Short Protection
Circuit
ACS
OVP
1.0V
AC_Duty sense
Comparator
OUT2
AC_Voltage sense
Comparator
0.1V
Auto Level
Control function
-
SD or Normal
0.05
+
ENB
ALC_C
TRC
GND
Pin Assignment
No.A2186-4/16
LV5012MD
Pin Function
No
Pin Symbol
1
HV
2
DML
Pin description
Please connect about 10k between this pin and the rectified AC voltage. Thereby HV regulator for IC
startups operates.
This pin is Drain of internal bleeder MOSFET.
This pin is used in TRIAC dimming applications for TRIAC stabilization. Please connect the resistor ”Rbl”
between this pin and the rectified AC voltage. If ACS pin is below 0.85V, the internal bleeder MOS is
turned on and bleeder current flows. Please set ”Rbl” so that the voltage of DML pin does not exceed 55V
when the bleeder MOS is turned on.
[If this function not used, do not connect.]
3
NC
4
GND
No connect pin
GND pin.
5
ENB
Switching Operation ON/OFF pin. If the input of this pin is above 2V, OUT pin is fixed Low. If the input of
this pin is below 1.8V, normal operation is started.
Connect it to GND when unused.
6
ACS
This pin senses the rectified AC voltage for TRIAC dimming.
If the voltage of this pin is below 0.85V, the internal bleeder MOS is turned on and bleeder current flows.
If the voltage of this pin is above 1.7V, LV5012MD recognizes “TRIAC ON”. If the voltage of this pin is
below 1.3V, LV5012MD recognizes “TRIAC OFF”.
[If this function not used, please connect to REF_OUT pin.]
7
REF_OUT
8
ALC_C
9
TRC
10
REF_IN
Reference Voltage (3.0V) output pin.
This pin is used for Auto Level Control (ALC) function. Please connect a capacitor of about 0.1F to GND.
Thereby ALC_C pin can output the smoothing value of REF_IN pin voltage.
Please connect a capacitor about 1F to GND, and a resistor about 4.7M to VIN.
If this pin is below 0.05V, the operation is stopped and VIN current is less than 250A (typ). If this pin is
above 0.1V, the operation is started.
This pin senses the rectified AC voltage for the ALC function.
CS
Current sense pin.
When CS pin voltage exceeds the reference, the power MOSFET is turned off. (The details of the
reference are described in following “Functional description”.)
If this pin voltage exceeds 1.9V, LV5012MD stops switching.
12
VIN
Power supply pin.
Operation : VIN > UVLOON(9V)
Stop : VIN < UVLOOFF(7.3V)
Switching Stop : VIN > VINOVP(27V)
Pull down to GND : VIN > 28V
13
GND
GND pin.
14
OUT
The external power MOSFET is driven by this pin. Please connect to MOSFET gate.
11
No.A2186-5/16
LV5012MD
Sample Application Circuit
Non-Isolation dimmable configuration
AC
LED-
LED+
LV5012MD
1
2
3
4
5
6
7
HV
14
OUT
DML
13
GND
NC
12
VIN
GND
CS
ENB
REF_IN
ACS
TRC
REF_OUT
11
10
9
8
ALC_C
Isolation dimmable configuration
AC
LED+
LV5012MD
1
2
3
4
5
6
7
HV
OUT
DML
GND
NC
VIN
GND
CS
ENB
REF_IN
ACS
TRC
REF_OUT
ALC_C
14
13
LED-
12
11
10
9
8
No.A2186-6/16
LV5012MD
Package Dimensions
unit : mm
SOIC14 W / MFP14S (225 mil)
CASE 751CB
ISSUE O
DATE 29 FEB 2012
Allowable power dissipation. Pdmax - W
Pd max -Ta
Specified board:
64mm×24mm×1.2mm,
glass epoxy board
1.0 0.8 0.6 0.4 0.2 0.0 ‐30
0
30
60
90
120
150
Ambient temperature, Ta - C
No.A2186-7/16
TRC_STR – Ta
0.11
0.10
0.09
0.08
0.07
--50
0
50
100
150
TRC pin voltage of operation stop, TRC_STP -- V
TRC pin voltage of operation start, TRC_STR -- V
LV5012MD
0.07
0.06
0.05
0.04
0.03
--50
UVLOON – Ta
9.5
9.0
8.5
8.0
--50
0
50
100
50
100
150
150
UVLOOFF – Ta
8.5
8.0
7.5
7.0
6.5
--50
Ambient temperature, Ta -- °C
0
50
100
150
Ambient temperature, Ta -- °C
UVLOH – Ta
1.80
Hysteresis voltage, UVLOH -- V
0
Ambient temperature, Ta -- °C
Operation stop input voltage, UVLOOFF -- V
Operation start input voltage, UVLOON -- V
Ambient temperature, Ta -- °C
10.0
TRC_STP – Ta
0.08
1.75
1.70
1.65
1.60
--50
0
50
100
150
Ambient temperature, Ta -- °C
FOSC – Ta
75
70
65
60
--50
0
50
MAXDuty – Ta
80
Maximum duty, MAXDuty -- %
Frequency, FOSC -- kHz
80
100
Ambient temperature, Ta -- °C
150
75
70
65
60
--50
0
50
100
150
Ambient temperature, Ta -- °C
No.A2186-8/16
LV5012MD
VDTYON – Ta
Duty OFF detection voltage, VDTYOFF -- V
Duty ON detection voltage, VDTYON -- V
1.80
1.75
1.70
1.65
1.60
--50
0
50
100
150
1.35
1.30
1.25
1.20
--50
Ambient temperature, Ta -- °C
Switching start ENB voltage, ENBST -- V
Switching stop ENB voltage, ENBSP -- V
2.00
1.95
0
50
100
1.75
ENB hysteresis voltage, ENBHY -- V
REF_OUT voltage, REF_OUT -- V
100
150
3.0
2.9
2.8
--50
150
0
50
100
150
Ambient temperature, Ta -- °C
VACS – Ta
IDML – Ta
100
90
DML load current, IDML -- mA
Threshold of DML load, VACS -- V
100
3.1
Ambient temperature, Ta -- °C
0.95
50
REF_OUT – Ta
3.2
0.15
50
0
Ambient temperature, Ta -- °C
ENBHY – Ta
0
150
1.80
1.70
--50
150
0.20
0.10
--50
100
1.85
Ambient temperature, Ta -- °C
0.25
50
ENBST – Ta
1.90
2.05
1.90
--50
0
Ambient temperature, Ta -- °C
ENBSP – Ta
2.10
VDTYOFF – Ta
1.40
0.90
0.85
0.80
80
70
60
50
40
30
0.75
--50
0
50
100
Ambient temperature, Ta -- °C
150
20
--50
0
50
100
150
Ambient temperature, Ta -- °C
No.A2186-9/16
LV5012MD
VIN_OUT – Ta
12.5
12.0
11.5
11.0
--50
0
50
100
1.6
1.4
1.2
1.0
0.8
0.6
0.4
--50
150
Ambient temperature, Ta -- °C
LOW TRIAC duty current, ICCLTR -- μA
UVLO mode VIN current, ICCOFF -- μA
100
80
60
0
50
100
200
1.2
1.0
0.8
0.6
100
150
Ambient temperature, Ta -- °C
50
100
150
VINOVP – Ta
30
29
28
27
26
25
24
--50
0
50
100
150
Ambient temperature, Ta -- °C
CSOCP – Ta
2.2
Abnormal sensing voltage, CSOCP -- V
VIN over voltage protection voltage, VINOVP -- V
Normal mode VIN current, IVIN -- mA
1.4
50
0
Ambient temperature, Ta -- °C
IVIN – Ta
0
150
250
150
--50
150
1.6
0.4
--50
100
300
Ambient temperature, Ta -- °C
1.8
50
ICCLTR – Ta
350
120
40
--50
0
Ambient temperature, Ta -- °C
ICCOFF – Ta
140
IHV – Ta
1.8
Static startup current, IHV -- mA
Startup OUTPUT voltage, VIN_OUT -- V
13.0
2.1
2.0
1.9
1.8
1.7
1.6
--50
0
50
100
150
Ambient temperature, Ta -- °C
No.A2186-10/16
LV5012MD
Functional description
LV5012MD is an LED driver IC that operates directly from the rectified AC voltage. LV5012MD controls brightness of
the LED by controlling a peak current of the MOSFET.
1. Start up function
LV5012MD has a high voltage regulator built-in for self-supplying
from the rectified AC voltage. It outputs 12V, and thereby the circuit
in the IC starts. Please connect about 10kΩ between HV pin and the
rectified AC voltage to operate HV regulator normally.
2. Peak current control
LV5012MD detects the current of external MOSFET as shown in the following diagram. The current that flows into
MOSFET is a triangular wave shown in the diagram. The current peak value is determined by the relationship between the
internal reference level and CS voltage. This relationship makes Power Factor Correction (PFC). CS voltage is used by
internal comparator to compare to the reference level. And OUT pin outputs the signal for MOSFET control. LV5012MD
controls the peak value of MOSFET current.
Here, the reference level is lower value of either “ALC_out” or “VREF(0.45V)”. ( “ALC_out” is described in “3. Auto
Level Control function”.)
Rectified
AC voltage
ALC_out
VREF
(0.45Vtyp)
FET
current
0.5Vtyp
Reference
T
ON
OUT
(FET Gate)
OFF
Ton
Toff
Reference=ALC_out
Reference
=0.45V
Reference=ALC_out
R1,R2 : External resistor for REF_IN pin setting
Rcs : External resistor for current sense
M1 : External Power MOSFET
The peak value of MOSFET current (Ipk) is determined by :
In the case of “ALC_out < VREF(0.45V)”  Ipk  ALC _ out
Rcs
0
.
45
V
In the case of “ALC_out > VREF(0.45V)”  Ipk 
Rcs
No.A2186-11/16
LV5012MD
3. Auto Level Control (ALC) function
Auto Level Control (ALC) function makes the sine wave reference voltage which doesn’t depend on AC voltage. This
function realizes both lower total harmonic distortion and good line regulation. ALC function is realized by calculation
shown in the following diagram.
Sine wave is inputted into REF_IN pin. And ALC_C pin is the smoothing value of REF_IN pin voltage. The ALC_C pin
voltage is compared with internal reference 0.5V by the “Larger Selection”. If the value of ALC_C pin voltage is more
than 0.5V, the “Larger Selection” outputs ALC_C voltage, otherwise outputs 0.5V. And the “Divider” divides the value
of REF_IN pin voltage by the “Larger Selection” output. If the “Larger Selection” output is ALC_C voltage, the output of
“Divider” is AC voltage-independent sine wave. The “Multiplier” adjusts amplitude to 0.5Vpeak sine wave.
Rectified AC
REF_IN
ALC_C
T
0.5V(constant)
ALC_out
T
 R1, R2 setting
Please set R1, R2 so that the voltage peak of the REF_IN pin is around 1.1V to 1.9V.
e.g. Vac=230V → R1=680kΩ, R2=2.7kΩ
REF_IN peak = (230V×√¯2) ×2.7k / (680k+2.7k) = 1.286V
 C1 setting
Please connect capacitor of about 0.1uF to an ALC_C pin.
4. Function for TRIAC dimming applications
LV5012MD contains the function for TRIAC dimming. This function is operated by setting ACS pin and DML pin.
4-1. TRIAC ON/OFF detection function
If ACS pin voltage is above 1.7V (internal fixed voltage), LV5012MD recognize “TRIAC ON”. If ACS pin voltage is
below 1.3V (internal fixed voltage), LV5012MD recognize “TRIAC OFF”.
The peak value of MOSFET current is controlled by the following reference voltage level.
 During TRIAC ON (ACS > 1.7V)
The reference voltage level is lower value of either “ALC_out” or “VREF(0.45V)”.
 During TRIAC OFF (ACS < 1.3V)
The reference voltage level is internal fixed 0.1V.
4-2. Bleeder current circuit
When ACS pin voltage is below 0.85V (internal fixed voltage), the built-in MOSFET for breeder current is turned on and
the bleeder current flows.
No.A2186-12/16
LV5012MD
The following shows a diagram of TRIAC Dimming.
Rectified
TRIAC OUT
Rectified
AC voltage
ACS
1.7V
1.3V
0.85V
T
TRIAC OFF
TRIAC ON
ALC_out
FET
current
VREF
(0.45Vtyp)
Reference
R1,R2 : External resistor for REF_IN pin setting
R3,R4 : External resistor for ACS pin setting
Rbl : External resistor for bleeder current
Rcs : External resistor for current sense
Rbl : External resistor for bleeder current
M1 : External Power MOSFET
M2 : Internal MOSFET for bleeder current
0.1V
T
TRIAC OFF
TRIAC ON
TRIAC
OFF
Bleeder MOS gate
Bleeder MOS ON
Bleeder MOS OFF
Bleeder
MOS ON
The peak value of MOSFET current (Ipk) is determined below
During TRIAC ON (ACS > 1.7V)
In the case of “ALC_out < VREF(0.45V)” → Ipk  ALC _ out
Rcs
0
.
45
V
In the case of “ALC_out > VREF(0.45V)” → Ipk 
Rcs
During TRIAC OFF (ACS< 1.3V)
0.1V
Ipk 
Rcs
The TRIAC ON threshold of the rectified AC is determined below.
Vac_triac on = R 3  R 4  1.7V
R4
The TRIAC OFF threshold of the rectified AC is determined below.
Vac_triac off = R 3  R 4  1.3V
R4
The Bleeder operation threshold of the rectified AC is determined below.
Vac_bleeder = R 3  R 4  0.85V
R4
Please set R3, R4 on the basis of these expressions according to TRIAC dimmer.
In addition, please set Rbl between the rectified AC voltage and DML pin to satisfy the following expression.
 R3  R 4

 0.85V   Rbl  0.02   50V

R
4


No.A2186-13/16
LV5012MD
5. Protection function
tilte
Outline
monitor point
1
UVLO
Under Voltage Lock Out
VIN voltage
2
OCP
Over Current Protection
CS voltage
3
OVP
Over Voltage Protection
VIN voltage
4
OTP
Over Temperature Protection
PN Junction temperature
5-1. UVLO(Under Voltage Lock Out)
If VIN voltage is 7.3V or lower, then UVLO operates and the IC stops. When UVLO operates, the power supply current
of the IC is about 80uA or lower. If VIN voltage is 9V or higher, then the IC starts switching operation.
VIN
voltage
VIN
voltage
UVLOON
(9Vtyp)
UVLOOFF
(7.3Vtyp)
time
Output stage
on
off
on
5-2. OCP(Over Current Protection)
CS pin is used to sense current in primary winding of transformer via external MOSFET. This provides an additional level
of protection in the event of a fault. If the voltage of the CS pin exceeds VCSOCP(1.9V typ.)(A), the internal comparator
will detect the event and turn off the MOSFET. The peak switch current is calculated
Iocp(peak) [A] = VCSOCP[V] / Rcs[]
The VIN pin is pulled down to fixed level, keeping the controller latched off. The latch reset occurs when the user
disconnects LED from VAC and lets the VIN falls below the VIN reset voltage,UVLOOFF(7.3V typ.)(B). Switching
restarts when VIN rises UVLOON(9V typ.)(C).
CS
voltage
A
C
VCSOCP(1.9Vtyp)
time
VIN
voltage
B
UVLOON(9Vtyp)
UVLOFF(7.3Vtyp)
time
Output stage
on
off
on
No.A2186-14/16
LV5012MD
5-3. OVP(Over Voltage Protection)
If the voltage of VIN pin is higher than the internal reference voltage VINOVP(27V typ.), switching operation is stopped.
The stopping operation is kept until the voltage of VIN is lower than VINOVP(27V typ.). If the voltage of VIN pin is
lower than VINOVP(27V typ.), the switching operation is restated. Please see OVP waveform chart.
5-4. OTP(Over thermal protection)
LV5012MD has the gradually thermal protection system. If the junction temperature exceeds 140 degrees Celsius, 1st
stage protection mode is started. At 1st stage protection mode, the internal reference level compared with CS pin voltage is
set to 0.1V. And the LED current is restricted to low values (approximately 5%).
If the junction temperature exceeds 155 degrees Celsius, the switching operation and startup circuit are stopped. Please
see OTP waveform chart.
155°C
143°C
140°C
IC
Junction
Temperature
128°C
Time
100%
LED
Current
Approximately 5%
Normal
Condition
Normal
Condition
1st Stage
Thermal
Protection
Normal
Condition
Time
Thermal
Shut
Down
No.A2186-15/16
LV5012MD
6. PWM dimming function
ENB pin is used for PWM dimming. LED current is adjusted according to PWM pulse duty of ENB input. When PWM
pulse is High(2V to 5V), the IC stops switching operation. When PWM pulse is Low(below 0.6V), the IC restarts
switching. Please see the waveform chart of PWM dimming.
a the
outline of PWM dimming using ENB pin
LED
current
ENB
LED current vs ENB duty (outline)
max
[note]
ENB input voltage is,
above 2V – output OFF
below 0.6V – output ON
0
0[%]
100[%]
ENB Duty (High side)[%]
AC
H
ENB
L
ENB
L
H
output sage
ON
OFF
OUT
(FET gate)
ENB
OUT
(FET gate)
FET current
(CS voltage)
ORDERING INFORMATION
Device
LV5012MD-AH
Package
MFP14S(225mil)
(Pb-Free / Halogen Free)
Shipping (Qty / Packing)
1000 / Tape & Reel
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PS No.A2186-16/16