LTC3525L-3 Datasheet, PDF (2/12 Pages) Linear Technology – 400mA Micropower Synchronous Step-Up DC/DC Converter with Output Disconnect

LTC3525L-3
ABSOLUTE AXI U RATI GS
(Note 1)
V_IN, V_OUT Voltage ......................................... –0.3V to 6V
SW Voltage .................................................. –0.3V to 6V
SW Voltage < 100ns .................................... –0.3V to 7V
SHDN Voltage .............................................. –0.3V to 6V
Operating Temperature Range
(Notes 2, 5).......................................... –40°C to 85°C
Storage Temperature Range................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
SHDN 1
GND 2
V_IN 3
6 SW
5 GND
4 V_OUT
SC6 PACKAGE
6-LEAD PLASTIC SC70
T_JMAX = 125°C
JA ^{= 256°C/W IN FREE AIR,} JA ^{= 150°C/W ON BOARD}
OVER GROUND PLANE
ORDER PART NUMBER SC6 PART MARKING
LTC3525LESC6-3
LCPY
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS (LTC3525L-3)
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T_A = 25°C.
V_IN = 1.2V, V_SHDN = 1.2V, V_OUT = 3V unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Minimum Input Start-Up Voltage
0.7
0.88
V
Output Voltage
(Note 6)
● 2.91 3.00 3.09
V
Quiescent Current, V_OUT
Quiescent Current, V_IN
Quiescent Current, V_IN - Shutdown
SHDN = V_IN (Note 4)
SHDN = V_IN (Note 4)
SHDN = 0V, V_OUT = 0V
Not Including Switch Leakage
7
15
µA
0.5
3
µA
0.1
1
µA
NMOS Switch Leakage
PMOS Switch Leakage
NMOS Switch On Resistance
V_IN = V_OUT = V_SW = 5V, SHDN = 0V
V_IN = V_SW = 5V, V_OUT = 0V, SHDN = 0V
(Note 3)
0.1
3
µA
0.1
6
µA
0.5
PMOS Switch On Resistance
(Note 3)
0.85
Peak Current Limit
0.4
0.45
A
SHDN Threshold
0.3
0.5
0.88
V
SHDN Input Current
V_SHDN = V_IN or V_OUT
0.01
1
µA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3525LE-3 is guaranteed to meet performance
specifications from 0°C to 85°C. Specifications over the –40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: Specification is guaranteed by design and not 100% tested in
production.
Note 4: Current Measurements are performed when the LTC3525L-3 is not
switching.
Note 5: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
Note 6: Consult LTC Marketing for other output voltage options.
3525lf
2