LT3798
20
3798fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2012
LT 1212 REV A • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LT3799/LT3799-1 Offline Isolated Flyback LED Controller
with Active PFC
No Opto-Coupler Required, TRIAC Dimmable, V
IN
and V
OUT
Limited Only by
External Components, MSOP-16E
LT3748 100V Isolated Flyback Controller 5V ≤ V
IN
≤ 100V, No-Opto Flyback , MSOP-16 with High Voltage Spacing
LT3573/LT3574/LT3575 40V Isolated Flyback Converters Monolithic No-Opto Flybacks with Integrated 1.25A/0.65A/2.5A Switch
LT3511/LT3512 100V Isolated Flyback Converters Monolithic No-Opto Flybacks with Integrated 240mA/420mA Switch
LT3757/LT3758 40V/100V Flyback/Boost Controllers Universal Controllers with Small Package and Powerful Gate Drive
LT3957/LT3958 40V/100V Flyback/Boost Converters Monolithic with Integrated 5A/3.3A Switch
LTC3803/LTC3803-3/LTC3803-5 200kHz/300kHz Flyback Controllers V
IN
and V
OUT
Limited Only by External Components
LTC3805/LTC3805-5 Adjustable Frequency Flyback
Controllers
V
IN
and V
OUT
Limited Only by External Components
3798 TA04
V
IN_SENSE
V
IN
DCM
FB
V
REF
CTRL2
CTRL1
GATE
SENSE
INTV
CC
GND
LT3798
COMP
+
V
C
COMP
–
C10
10µ
F
×4
C2: TDK C5750X7S2A106M
C8: VISHAY 440LD22-R
C10: MURATA GRM32ER7YA106KA12L
D1: DIODES INC. DFLS1150
D2, D3: DIODES INC. BAV20W
D4: ON SEMICONDUCTOR MBR20200CT
D5: DIODES INC. DFLS2100
C4
15pF
C5
10µ
F
C8
2.2nF
C6
22pF
1:1:0.8
C3
0.1µF
C7, 22nF
R17
20Ω
D2
D4
M1
Z1
Z2
“Y1 CAP”
D1
Z3
D5
R
S
0.004Ω
R4
24k
TO
INTV
CC
R8
6.8k
R7
6.8k
R15
5.9k
R14
100k
CTRL3
EN/UVLO
OVP
R9
40.2k
R10
34.8k
R3
16.2k
R12
221k
R11
100k
R5
402k
R6
51.1k
C9
4.7µF
R13
15k
D3
28V
4A
C2
10µF
V
IN
20V TO 60V
M1: FAIRCHILD FDP2532
T1: WÜRTH ELEKTRONIK 750312872
Z1: DIODES INC. SMCJ60A
Z2: CENTRAL SEMICONDUCTOR CMZ59398
Z3: FAIRCHILD SMBJ170A
112W Wide DC Input Industrial Power Supply
