Data Sheet

BLOCK DIAGRAM
PFC fosc : 50~400KHz
PWM fosc : 30~200KHz
DETECTION
PWM & PFC
CIRCUIT
O.L.P.O.T.P.
EMI FILTER
RECTIFIERS
POWER
SWITCHING
FILTER
&
RECTIFIERS
+V
-V
I/P
CONTROL
O.V.P.
&
CP.
CASE GROUND
DIM+
(B Type)
DIM-
File Name:LDC-55-SPEC 2018-09-14
LDC-55 series
55W Constant Power MODE Linear LED Driver
OUTPUT CURRENT SETTING
◎I-V Operating Area.
CURRENT
VOLTAGE
CASE GROUND
LDC-55
LDC-55
0V
10V
20V
30V
40V
50V
60V
300mA 500mA 700mA 900mA 1100mA 1300mA 1500mA 1700mA
◎ Rated current setting table
Note:output power 55W≤
18K 20K 24K 27K 30K 33K 36K 39K 43K 47K 56K 68K 91K 150K 200K NC
1.6A 1.52A 1.45A 1.32A 1.26A 1.2A 1.15A 1.11A 1.06A 1.03A 0.95A 0.88A 0.8A 0.7A 0.65A 0.5A
56V
27V
Vo-
Vo-
Vo+
Vo+
NTC
IADJ
NTC
IADJ
IADJ
resistor
IADJ
TB2
Output rated current level can be adjusted by a additive resistance.