LTC3526 Datasheet, PDF (2/16 Pages) Linear Technology – 500mA 1MHz Synchronous Step-Up DC/DC Converters in 2mm X 2mm DFN

LTC3526/LTC3526B
ABSOLUTE MAXIMUM RATINGS
(Note 1)
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
PIN CONFIGURATION
TOP VIEW
SW 1
6 V_OUT
GND 2
7
5 FB
V_IN 3
4 SHDN
DC PACKAGE
6-LEAD (2mm × 2mm) PLASTIC DFN
T_JMAX = 125°C, θ_JA = 60°C/W (NOTE 6)
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PC BOARD
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3526EDC#PBF
LTC3526EDC#TRPBF
LCHW
6-Lead (2mm × 2mm) Plastic DFN
LTC3526BEDC#PBF
LTC3526BEDC#TRPBF LCNN
6-Lead (2mm × 2mm) Plastic DFN
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/
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
ELECTRICAL CHARACTERISTICS 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
Output Voltage Adjust Range
I_LOAD = 1mA
0°C to 85°C
0.85
1
V
l 1.7
1.6
5.25
V
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, LTC3526 Only
250
500
μA
Quiescent Current—Burst
Measured on V_OUT, FB > 1.230V
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 500
700
mA
Current Limit Delay to Output
(Note 3)
60
ns
Maximum Duty Cycle
Minimum Duty Cycle
Switching Frequency
SHDN Pin Input High Voltage
SHDN Pin Input Low Voltage
SHDN Pin Input Current
V_FB = 1.15V
V_FB = 1.3V
V_SHDN = 1.2V
V_SHDN = 3.3V
l 85
90
%
l
0
%
l 0.7
1
1.3
MHz
0.9
V
0.3
V
0.3
1
μA
1
2
μA
3526bfb
2