Datasheet

LTC3526L/LTC3526LB
2
3526lfc
V
IN
Voltage ................................................... –0.3V to 6V
SW Voltage
DC ............................................................ –
0
.3V to 6V
Pulsed <100ns ......................................... –0.3V to 7V
SHDN,
FB Voltage ........................................ –0.3V to 6V
V
OUT
............................................................. –0.3V to 6V
Operating Temperature Range
(Notes 2, 5) ..............................................–40°C to 85°C
Storage Temperature Range .................. –65°C to 150°C
(Note 1)
The
l denotes the specifications which apply over the specified operating
temperature range of –40°C to 85°C, otherwise specifications are at T
A
= 25°C. V
IN
= 1.2V, V
OUT
= 3.3V unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Start-Up Input Voltage I
LOAD
= 1mA 0.68 0.8 V
Input Voltage Range After Start-Up. (Minimum Voltage is Load Dependent)
l
0.5 5 V
Output Voltage Adjust Range
l
1.5 5.25 V
Feedback Pin Voltage
l
1.165 1.195 1.225 V
Feedback Pin Input Current V
FB
= 1.30V 1 50 nA
Quiescent Current—Shutdown V
SHDN
= 0V, Not Including Switch Leakage, V
OUT
= 0V 0.01 1 µA
Quiescent Current—Active Measured on V
OUT
, Nonswitching 250 500 µA
Quiescent Current—Burst Measured on V
OUT
, FB > 1.230V (LTC3526L Only) 9 18 µA
N-Channel MOSFET Switch Leakage Current V
SW
= 5V 0.1 5 µA
P-Channel MOSFET Switch Leakage Current V
SW
= 5V, V
OUT
= 0V 0.1 10 µA
N-Channel MOSFET Switch On Resistance V
OUT
= 3.3V 0.4
Ω
P-Channel
MOSFET Switch On Resistance V
OUT
= 3.3V 0.6
Ω
N-Channel
MOSFET Current Limit
l
550 750 mA
Current Limit Delay to Output (Note 3) 60 ns
Maximum
Duty Cycle V
FB
= 1.15V
l
87 90 %
Minimum Duty Cycle V
FB
= 1.3V
l
0 %
Switching Frequency
l
0.75 1 1.25 MHz
SHDN Pin
Input High Voltage 0.8 V
SHDN Pin
Input Low Voltage 0.3 V
pin conFigurAtion
TOP VIEW
V
OUT
FB
SHDN
SW
GND
V
IN
DC PACKAGE
6-LEAD (2mm s 2mm) PLASTIC DFN
7
1
2
3
6
5
4
T
JMAX
= 125°C, θ
JA
= 102°C/W (NOTE 6)
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PC BOARD
electricAl chArActeristics
Absolute MAxiMuM rAtings
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3526LEDC#PBF LTC3526LEDC#TRPBF LCSS
6-Lead
(2mm × 2mm)
Plastic DFN
–40°C to 85°C
LTC3526LBEDC#PBF LTC3526LBEDC#TRPBF LCST
6-Lead
(2mm × 2mm)
Plastic DFN
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult
LTC Marketing for information on non-standard 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/
orDer inForMAtion