LT3750EMS#PBF Linear Technology, LT3750EMS#PBF Datasheet - Page 12

• Manufacturer Part Number: LT3750EMS#PBF
• Description: IC CTLR CAPACITOR CHARGE 10-MSOP
• Manufacturer: Linear Technology
• Type: Flyback, Forward Converterr

Specifications of LT3750EMS#PBF

• Applications: Power Supply Controller
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Ic Function: Capacitor Charger Controller
• Supply Voltage Range: 3V To 24V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: MSOP
• No. Of Pins: 10
• Msl: MSL 1 - Unlimited
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LT3750
TYPICAL APPLICATIO S
12
100
60
50
90
80
70
0
50
3A Charging Efficiency
V
TRANS
100
= 12V
V
V
OUT
TRANS
150
(V)
= 18V
V
200
TRANS
V
= 6V
250
TRANS
3750 TA02b
12V
V
CC
300
U
C1
10µF
OFF ON
300
250
200
150
100
50
0
C1: 25V X5R OR X7R CERAMIC CAPACITOR
C2: 25V X5R OR X7R CERAMIC CAPACITOR
C3: 25V SANYO OS-CON 25SVP56M
C4: 330V RUBYCON PHOTOFLASH CAPACITOR
D1: DIODES INC. MURS160
M1: PHILIPS PHT6NQ10T
T1: TDK DCT15EFD-U44S003 FLYBACK TRANSFORMER
0
100k
V
TRANS
300V, 3A Capacitor Charger
0.2
V
DONE
CHARGE
CC
= 18V
C2
10µF
GND
3A Charge Time
V
LT3750
TIME (SECONDS)
TRANS
0.4
SOURCE
V
RBG
RV
RDCM
TRANS
GATE
OUT
2.49k
0.6
V
TRANS
= 12V
C3
56µF
60.4k
= 6V
43k
0.8
33pF
3750 TA02a
3750 TA02c
4, 5
6, 7
•
1.0
1:10
T1
M1
25mΩ
•
1
10
NMOS DRAIN
NMOS DRAIN
D1
CURRENT
VOLTAGE
+
20V/DIV
1A/DIV
C4
100µF
V
300V
OUT
Typical Switching Waveforms
5µs/DIV
3750 TA02d
3750fa