LTC3900ES8#PBF Linear Technology, LTC3900ES8#PBF Datasheet - Page 14

• Manufacturer Part Number: LTC3900ES8#PBF
• Description: IC DRIVER RECT SYNC CONV 8SOIC
• Manufacturer: Linear Technology

Specifications of LTC3900ES8#PBF

• Configuration: High-Side
• Input Type: Inverting and Non-Inverting
• Delay Time: 60ns
• Current - Peak: 2A
• Number Of Configurations: 2
• Number Of Outputs: 2
• Voltage - Supply: 4.5 V ~ 11 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• High Side Voltage - Max (bootstrap): -

LTC3900
TYPICAL APPLICATIONS
The LTC3900 can drive multiple synchronous output
rectifi ers. The 12V and 24V or ±12V output converter
has good cross regulation due to low voltage drops in
14
1.2k
V
Q2, Q3, Q4, Q5 = Si7850
FB
0.1μF
13.3k
BC857BF
22k
340k
V
IN
115k
33k
22k
36V to 72V Input to 12V and 24V (or ± 12V), 2A Output Converter in 1/8th Brick Footprint
36V TO 72V
1
2
3
4
5
6
7
8
COMP
FB = 1.23V
R
SYNC
MAXDC
V
SD
GND
R
OSC
= 2.5V
56k
V
IN
2.2μF
0.47μF
LT1952-1
BLANK
DELAY
I
PGND
SENSE
S
OUT
OUT
V
OC
82k
IN
16
15
14
13
12
11
10
9
BCX56
PDZ10B
680Ω
82k
V
S
V
U1
OUT
FB
100pF
145k
1.5mH
V
U1
Si7462
PS2801-1
1μF
V
IN
V
U1
V
OUT1
BAS516
1k
0.030R
PDZ7.5B
BAS516
470R
2
1
3
4
PA1577
•
•
T1
the output MOSFETs. Other combinations like 3.3V and
–5V or 1.5V and 5V can be easily achieved by changing
the transformer turns ratio.
BCX55
•
•
V
7
9
8
10
F
AUX
G
V
0.1μF
AUX
10k
1μF
F
10k
10k
G
CG
1
2
3
V
GND
OC
CC
BAS516
LT4430
1
2
3
4
1μF
COMP
CS
CS
CG
V
OPTO
CC
LTC3900
+
–
FB
Q2
Q4
38.3k
TIMER
6
5
4
C
SYNC
GND
G
FG
3.92k
5.23k
0.1μF
47k
L1: DRQ127-220
10k
8
7
6
5
C
G
FG
15nF
33pF
100k
BAS516
470pF
560R
Q3
Q5
L1A
L1B
V
OUT1
PE-68386
+
•
150μF
16V
33μF
16V
•
V
24V
2A
V
12V
2A
220pF
OUT2
OUT1
3900 TA02
S
OUT
3900fa