LTC3108-1_15 Datasheet, PDF (2/24 Pages) Linear Technology – Ultralow Voltage Step-Up Converter and Power Manager

LTC3108-1
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
VAUX 1
VSTORE 2
V_OUT 3
V_OUT2 4
VLDO 5
PGD 6
12 SW
11 C2
13
10 C1
GND
9 V_{OUT2_EN}
8 VS1
7 VS2
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)
TOP VIEW
GND 1
VAUX 2
VSTORE 3
V_OUT 4
V_OUT2 5
VLDO 6
PGD 7
GND 8
16 GND
15 SW
14 C2
13 C1
12 V_{OUT2_EN}
11 VS1
10 VS2
9 GND
GN PACKAGE
16-LEAD PLASTIC SSOP NARROW
T_JMAX = 125°C, θ_JA = 110°C/W
order information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
LTC3108EDE-1#PBF
LTC3108EDE-1#TRPBF 31081
12-Lead (4mm × 3mm) Plastic DFN
LTC3108IDE-1#PBF
LTC3108IDE-1#TRPBF 31081
12-Lead (4mm × 3mm) Plastic DFN
LTC3108EGN-1#PBF
LTC3108EGN-1#TRPBF 31081
16-Lead Plastic SSOP
LTC3108IGN-1#PBF
LTC3108IGN-1#TRPBF 31081
16-Lead Plastic SSOP
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/
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Electrical Characteristics 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.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Minimum Start-Up Voltage
Using 1:100 Transformer Turns Ratio, VAUX = 0V
20
50
mV
No-Load Input Current
Input Voltage Range
Using 1:100 Transformer Turns Ratio; V_IN = 20mV,
V_{OUT2_EN} = 0V; All Outputs Charged and in Regulation
3
mA
Using 1:100 Transformer Turns Ratio
l V_STARTUP
500
mV
31081fb
2
For more information www.linear.com/LTC3108-1