LTC3440_15 Datasheet, PDF (2/20 Pages) Linear Technology – Micropower Synchronous Buck-Boost DC/DC Converter

LTC3440
Absolute Maximum Ratings
(Note 1)
V_IN, V_OUT Voltage ........................................ – 0.3V to 6V
SW1, SW2 Voltage....................................... –0.3V to 6V
V_C, R_T, FB, SHDN/SS,
MODE/SYNC Voltage................................... –0.3V to 6V
Operating Temperature Range (Note 2)....–40°C to 85°C
Storage Temperature Range................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec).................... 300°C
Pin Configuration
TOP VIEW
R_T 1
MODE/SYNC 2
10 V_C
9 FB
SW1 3
11
8 SHDN/SS
SW2 4
GND 5
7 V_IN
6 V_OUT
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
EXPOSED PAD (PIN 11) IS GND
MUST BE SOLDERED TO PCB
T_JMAX = 125°C, θ_JA = 43°C/W, θ_JC = 3°C/W
TOP VIEW
R_T 1
MODE/SYNC 2
SW1 3
SW2 4
GND 5
10 V_C
9 FB
8 SHDN/SS
7 V_IN
6 V_OUT
MS PACKAGE
10-LEAD PLASTIC MSOP
T_JMAX = 125°C,
θ_JA = 130°C/W 1 layer board
θ_JA = 100°C/W 4 layer board
θ_JC = 45°C/W
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3440EDD#PBF
LTC3440EDD#TRPBF LBKT
10-Lead (3mm × 3mm) Plastic DFN
LTC3440EMS#PBF
LTC3440EMS#TRPBF LTNP
10-Lead Plastic MSOP
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on nonstandard lead based finish parts.
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 85°C
–40°C to 85°C
ELECTRICAL CHARAcTERISTICS The ● denotes specifications that apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_IN = V_OUT = 3.6V, R_T = 60k, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
Input Start-Up Voltage
l
2.4
2.5
Input Operating Range
l 2.5
5.5
Output Voltage Adjust Range
l 2.5
5.5
Feedback Voltage
l 1.196
1.22
1.244
Feedback Input Current
Quiescent Current, Burst Mode Operation
V_FB = 1.22V
V_C = 0V, MODE/SYNC = 3V (Note 3)
1
50
25
40
Quiescent Current, Shutdown
SHDN = 0V, Not Including Switch Leakage
0.1
1
Quiescent Current, Active
NMOS Switch Leakage
V_C = 0V, MODE/SYNC = 0V (Note 3)
Switches B and C
600
1000
0.1
5
2
For more information www.linear.com/LTC3440
UNITS
V
V
V
V
nA
µA
µA
µA
µA
3440fc