OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

LT3959EFE#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P26
LT3959
19
3959fa
For more information www.linear.com/LT3959
applicaTions inForMaTion
Figure 5. Suggested Layout of the 2.5V to 8V Input. 12V Output Boost Converter
in the Typical Application Section (Shown for QFN Package)
3959 F05
LT3959
37
38
10
VIA TO V
OUT
R1
R2
C
SS
C
VCC
R
T
R5
R
C
C
C
R3
R4
D1
SW
SGND
L1
C
OUT
C
OUT
C
IN
GND V
OUT
V
IN
VIA TO V
OUT
VIA TO V
OUT
VIA TO V
IN
VIAS TO SGND GROUND PLANE
VIAS TO SW PLANE
36 35 34 33 32 31 30
21
23
24
25
27
28
20
12 13 14 15 16 17
8
6
4
3
2
1
9
LT3959
20
3959fa
For more information www.linear.com/LT3959
Typical applicaTions
2.5V to 5V Input, –5V Output Inverting Converter
Efficiency vs Output Current
GND
LT3959
V
IN
V
IN
2.5V TO 5V
C
IN
47µF
10V
X5R
C
DC
4.7µF, 25V
X7R
1µF
16V
X5R
DRIVE
FBX
INTV
CC
SSRT
EN/UVLO
SYNC
PGOOD
SGND
V
C
L1B
L1A
GNDK
SW
22k
9.09k
10nF
0.1µF
27.4k
300kHz
124k
121k
C
VCC
4.7µF
10V
X5R
V
OUT
–5V
1A
3959 TA02
D2 D1
84.5k
15.8k
L1A, L1B: COILTRONICS DRQ127-3R3
D1: VISHAY 6CWQ03FN
D2: PHILIPS PMEG2005EJ
C
OUT
47µF
10V
X5R
×2
OUTPUT CURRENT (mA)
0
EFFICIENCY (%)
100
600
3759 TA02a
200 400 1000800
70
60
80
90
50
V
IN
= 5V
LT3959
21
3959fa
For more information www.linear.com/LT3959
Typical applicaTions
2.5V to 24V Input, 12V Output SEPIC Converter
DRIVE
LT3959
L1A
L1B
V
IN
V
C
SW
D1
L1A, L1B: COILTRONICS DRQ127-150
D1: VISHAY 6CWQ06FN
GND
FBX
RT
SS
INTV
CC
EN/UVLO
SYNC
TIE TO SGND IF
NOT USED
PGOOD
SGND
3959 TA03
124k
121k150k
7.5k 4.7µF
27.4k
300kHz
22nF0.1µF
105k
15.8k
GNDK
4.7µF
50V
V
OUT
12V
500mA AT V
IN
= 2.5V
1.5A AT V
IN
> 8v
V
IN
2.5V TO 24V
C
IN
22µF
50V
×2
C
OUT1
47µF
16V
X5R
×2
•
•
Efficiency vs Output Current
Load Step Response at V
IN
= 12V
Frequency Foldback Waveforms
When Output Short-Circuits
OUTPUT CURRENT (mA)
0
EFFICIENCY (%)
90
100
800
3759 TA03b
80
400200 600 1000
65
70
75
85
95
60
V
IN
= 12V
500µs/DIV
V
OUT
500mV/DIV
(AC)
I
OUT
500mA/DIV
0.2A
0.8A
3959 TA03c
500µs/DIV
V
OUT
10V/DIV
V
SW
20V/DIV
I
L1A+L1B
2.5A/DIV
3959 TA03d
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P26

LT3959EFE#TRPBF

Mfr. #:
Buy LT3959EFE#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators Wide Input Voltage Range Boost/SEPIC/Inverting Converter with 5A, 40V Switch
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet