LTC3526/LTC3526B
absoluTe maximum raTings
(Note 1)
pin conFiguraTion
TOP VIEW
SW 1
GND 2
V
IN
3
7
6 V
OUT
5 FB
4
SHDN
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 (Note 2) ...–40°C to 85°C
Storage Temperature Range .................. –65°C to 150°C
DC PACKAGE
6-LEAD (2mm × 2mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 102°C/W (NOTE 6)
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PC BOARD
orDer inFormaTion
LEAD FREE FINISH
LTC3526EDC#PBF
LTC3526BEDC#PBF
TAPE AND REEL
LTC3526EDC#TRPBF
LTC3526BEDC#TRPBF
PART MARKING
LCHW
LCNN
PACKAGE DESCRIPTION
6-Lead (2mm
×
2mm) Plastic DFN
6-Lead (2mm
×
2mm) Plastic DFN
TEMPERATURE RANGE
–40°C to 85°C
–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/
elecTrical characTerisTics
PARAMETER
Minimum Start-Up Input Voltage
Output Voltage Adjust Range
Feedback Pin Voltage
Feedback Pin Input Current
Quiescent Current—Shutdown
Quiescent Current—Active
Quiescent Current—Burst
N-Channel MOSFET Switch Leakage Current
P-Channel MOSFET Switch Leakage Current
N-Channel MOSFET Switch On Resistance
P-Channel MOSFET Switch On Resistance
N-Channel MOSFET Current Limit
Current Limit Delay to Output
Maximum Duty Cycle
Minimum Duty Cycle
Switching Frequency
SHDN
Pin Input High Voltage
SHDN
Pin Input Low Voltage
SHDN
Pin Input Current
(Note 3)
V
FB
= 1.15V
V
FB
= 1.3V
V
FB
= 1.30V
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.
CONDITIONS
I
LOAD
= 1mA
l
MIN
1.7
1.6
1.165
TYP
0.85
MAX
1
5.25
5.25
UNITS
V
V
V
V
nA
µA
µA
µA
µA
µA
Ω
Ω
mA
ns
%
0°C to 85°C
l
1.195
1
0.01
250
9
0.1
0.1
0.4
0.6
1.225
50
1
500
18
5
10
V
SHDN
= 0V, Not Including Switch Leakage, V
OUT
= 0V
Measured on V
OUT
, Nonswitching, LTC3526 Only
Measured on V
OUT
, FB > 1.230V
V
SW
= 5V
V
SW
= 5V, V
OUT
= 0V
V
OUT
= 3.3V
V
OUT
= 3.3V
l
500
85
0.7
0.9
700
60
90
0
1
1.3
0.3
l
l
l
%
MHz
V
V
µA
µA
3526bfd
V
SHDN
= 1.2V
V
SHDN
= 3.3V
0.3
1
1
2
LINER [ LINEAR TECHNOLOGY ]
