Note1) Absolute maximum ratings represent the values which cannot be exceeded for any length of time.
Note2) 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.
Recommended Operating Conditions
at Ta = 25°C
Parameter
Input voltage
* Note : supply the stabilized voltage.
VIN
Symbol
Conditions
Ratings
8.5 to 24
Unit
V
Electrical Characteristics
at Ta
=
25°C, VIN = 12V, unless otherwise specified.
Parameter
Reference voltage block
Built-in reference voltage
VREF VIN line regulation
Reference output voltage
- Maximum load
- equivalent output impedance
Under voltage lockout
Operation start Input voltage
Operation stop input voltage
Hysteresis voltage
Oscillation
Frequency
FOSC1
FOSC2
FOSC1 Switch voltage
FOSC2 Switch voltage
Maximum ON duty
Comparator
Input offset voltage
(Between CS and VREF)
Input offset voltage
(Between CS and REFIN)
Input current
IIOSC
IIOREF
CS pin max voltage
malfunction prevention mask
time
PWM_D circuit
OFF voltage
ON voltage
Thermal protection circuit
Thermal shutdown temperature
Thermal shutdown hysteresis
Drive Circuit
OUT sink current
OUT source current
Minimum On time
IOI
IOO
TMIN
500
1000
120
200
300
mA
mA
ns
TSD
ΔTSD
*Design guarantee
*Design guarantee
165
30
°C
°C
VOFF
VON
2
0
5
0.6
V
V
VOM
TMSK
150
160
80
1
nA
nA
V
ns
VIO_RI
1
10
mV
VIO_VR
1
10
mV
VOSC1
VOSC2
MAXDuty
93
RT =OPEN
RT = REF_OUT
40
55
2
50
70
60
85
5
0.5
kHz
kHz
V
V
%
UVLOON
UVLOOFF
UVLOH
8
6.3
9
7.3
1.7
10
8.3
V
V
V
VREF
VREF_LN
REFOUT
REFOUT_MAX
REFOUT_RO
VIN = 8.5 to 24V
IREFOUT = 0.5mA
0.5
10
0.585
0.605
±0.5
3.0
0.625
V
%
V
mA
Ω
Symbol
Conditions
min
Ratings
typ
max
Unit
Continued on next page.
No.A1950-2/17
LV5026M
Continued from preceding page.
Parameter
TRIAC Stabilization circuit
Threshold of OUT2
OUT2 sink current
OUT2 source current
VCC current
UVLO mode VIN current
Normal mode VIN current
ICCOFF
ICCON
VIN
<
UVLOON
VIN
>
UVLOON, OUT = OPEN
80
0.6
120
μA
mA
VACS
IO2I
IO2O
OUT2 = High [less than right record]
VIN = 12V, OUT2 = 6V
VIN = 12V, OUT2 = 6V
2.8
3.0
0.6
0.6
3.2
V
mA
mA
Symbol
Conditions
min
Ratings
typ
max
Unit
VIN over voltage protection circuit
VIN over voltage protection
voltage
VIN current at OVP
VINOVP
IINOVP
VIN = 30V
24
0.7
27
1.0
30
1.5
V
mA
CS terminal abnormal sensing circuit
Abnormal sensing voltage
CSOCP
1.9
V
*: Design guarantee (value guaranteed by design and not tested before shipment)
Package Dimensions
unit : mm (typ)
3086B
5.0
10
6
0.63
1.7max
4.4
0.15
(0.5)
1
5
0.35
1.0
0.1 (1.5)
SANYO : MFP10S(225mil)
Pin Assignment
6.4
RT 1
REF_OUT 2
REF_IN 3
CS 4
PWM_D 5
(Top view)
6 ACS
7 OUT2
LV5026M
8 VIN
9 OUT
10 GND
No.A1950-3/17
LV5026M
Block Diagram
VIN
REF_OUT
Built-in
REGULATOR
TSD
3.0V
0.61V
UVLO
OVP
REFERENCE
VOLTAGE
OSCILATOR
S
R
Current Limit
Comparater
Q
CONTROL
LOGIC
OUT
CS
REF_IN
+
-
-
Short
Protection
Circuit
ACS
-
OUT2
+
AC_Voltage sense
Comparater
RT
PWM_D
GND
Sample Application Circuit
Non isolation
F1
AC
INPUT
C2
-
+
D3
U1
9 OUT2
8 LV5026M
VCC
ACS
10
L
R2
Q1
2 REF_OUT
3
4
REF_IN
CS
5
PWM_D
1 RT
GND
6
OUT 7
R1
R3
Isolation
F1
AC
INPUT
C2
-
D1
+
L1
NP
D3
U1
9 OUT2
8 LV5026M
VCC
ACS
10
D7
RD0306
C13
NS
LED
9pcs
ND
R2
Q1
OUT 7
2 REF_OUT
3
4
REF_IN
CS
5
PWM_D
1 RT
GND
6
R1
R3
No.A1950-4/17
LV5026M
Pin Functions
Pin No.
1
RT
Pin name
Pin function
Switching frequency selection pin.
L or Open : 50kHz switching,
H: 70 kHz switching.
In case of 70kHz,connect RT pin to REFOUT pin.
on time
Equivalent circuit
VREF-OUT
(3V typ)
RT
GND
1kΩ
2
REF_OUT
Built-in 3V Regulate out Pin.
If this function isn’t used, please connect to nothing.
VIN
VREF-OUT
(3V typ)
GND
3
REF_IN
External LED current Limit Setting pin. If less than
VREF (0.61V) voltage is input, Peak current value is
used at the input voltage. If more than REF_IN voltage
is input, it is done at VREF voltage. If this function isn’t
used, please connect nothing.
VIN
CS
REF_IN
GND
4
CS
LED current sensing in. If this terminal voltage
exceeds VREF (Or REF_IN), external FET is OFF.
And if the voltage of the terminal exceeds 1.9V,
LV5026M turns to latch-off mod
VIN
CS
REF_IN
GND
5
PWM_D
PWM Dimming pin.L or open: normal operation,
H: Stop operation.
VIN
PWM_D
200kΩ
700kΩ
GND
6
7
8
GND
OUT
VIN
GND pin.
Driving the external FET Gate Pin.
Power supply pin. Operation
: VIN
>
UVLOON Stop: VIN
<
UVLOOFF
Switching Stop : VIN
>
VINOVP
VIN
OUT
GND
9
OUT2
This pin drive the FET which is stabilized the TRIAC
dimming application.
If ACS is less than 3V, OUT2 turn High voltage.
If this function isn’t used, please connect nothing.
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