LTC3108
ABSOLUTE MAXIMUM RATINGS
(Note 1)
SW Voltage ..................................................–0.3V to 2V
C1 Voltage....................................................–0.3V to 6V
C2 Voltage (Note 5).........................................–8V to 8V
V
OUT2
, V
OUT2_EN
...........................................–0.3V to 6V
VAUX....................................................15mA into VAUX
VS1, VS2, VAUX, V
OUT
, PGD ........................–0.3V to 6V
VLDO, VSTORE ............................................–0.3V to 6V
Operating Junction Temperature Range
(Note 2)................................................. –40°C to 125°C
Storage Temperature Range.................. –65°C to 125°C
PIN CONFIGURATION
TOP VIEW
GND
VAUX
VSTORE
V
OUT
V
OUT2
VLDO
PGD
1
2
3
4
5
6
13
GND
12
SW
11
C2
10
C1
9
8
7
V
OUT2_EN
VS1
VS2
VAUX
VSTORE
V
OUT
V
OUT2
VLDO
PGD
GND
1
2
3
4
5
6
7
8
TOP VIEW
16 GND
15 SW
14 C2
13 C1
12 V
OUT2_EN
11 VS1
10 VS2
9
GND
DE PACKAGE
12-LEAD (4mm 3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 43°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB (NOTE 4)
GN PACKAGE
16-LEAD PLASTIC SSOP NARROW
T
JMAX
= 125°C,
θ
JA
= 110°C/W
ORDER INFORMATION
LEAD FREE FINISH
LTC3108EDE#PBF
LTC3108IDE#PBF
LTC3108EGN#PBF
LTC3108IGN#PBF
TAPE AND REEL
LTC3108EDE#TRPBF
LTC3108IDE#TRPBF
LTC3108EGN#TRPBF
LTC3108IGN#TRPBF
PART MARKING*
3108
3108
3108
3108
PACKAGE DESCRIPTION
12-Lead (4mm
×
3mm) Plastic DFN
12-Lead (4mm
×
3mm) Plastic DFN
16-Lead Plastic SSOP
16-Lead Plastic SSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts specified for other fixed output voltages or wider operating temperature ranges.
*The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum Start-Up Voltage
No-Load Input Current
Input Voltage Range
CONDITIONS
The
l
denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are for T
A
= 25°C (Note 2). VAUX = 5V, unless otherwise noted.
MIN
TYP
20
3
l
MAX
50
UNITS
mV
mA
Using 1:100 Transformer Turns Ratio, VAUX = 0V
Using 1:100 Transformer Turns Ratio; V
IN
= 20mV,
V
OUT2_EN
= 0V; All Outputs Charged and in Regulation
Using 1:100 Transformer Turns Ratio
V
STARTUP
500
mV
3108fb
2
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
