LT3580 LINER [Linear Technology], LT3580 Datasheet - Page 22

• Manufacturer Part Number: LT3580
• Description: Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization
• Manufacturer: LINER [Linear Technology]

LT3580
TYPICAL APPLICATIONS
22
High Voltage Positive Power Supply Uses Tiny 5.8mm × 5.8mm × 3mm Transformer and Switches at 200kHz
3.3V TO 5V
V
IN
Danger High Voltage! Operation by High Voltage Trained Personnel Only
C1: 2.2μF , 25V, X5R, 1206
C2: TDK C3225X7R2J683M
D1: VISHAY GSD2004S DUAL DIODE CONNECTED IN SERIES
D2: ON SEMICONDUCTOR MBR0540
T1: TDK LDT565630T-041
AC COUPLED
C1
2.2μF
I
I
PRIMARY
50V/DIV
PRIMARY
1A/DIV
2V/DIV
1A/DIV
V
V
OUT
OUT
464k
SHDN
RT
5V INPUT
NO LOAD
Start-Up Waveforms
Switching Waveforms
5V INPUT
4.5mA LOAD
V
SYNC
IN
LT3580
4.7μH
D2
7, 8
5, 6
SS
SW
GND
1:10.4
VC
•
FB
0.47μF
T1
•
2ms/DIV
2μs/DIV
R
1
4
FB
4.22M*
10k
D1
10nF
100pF
3580 TA05a
3580 TA05b
3580 TA05c
C2
68nF
FOR ANY V
350V, CHOOSE R
FOR 5V INPUT, KEEP MAXIMUM
OUTPUT POWER AT 1.58W
FOR 3.3V INPUT, KEEP MAXIMUM
OUTPUT POWER AT 0.88W
*MAY REQUIRE MULTIPLE SERIES
RESISTORS TO COMPLY WITH
MAXIMUM VOLTAGE RATINGS
R
FB
V
350V
4.5mA (V
2.5mA (V
OUT
=
V
OUT
OUT
83.3μA
IN
IN
– 1.215
BETWEEN 50V TO
= 5V)
= 3.3V)
FB
ACCORDING TO
3580fc