LTC3526L-2_15 Datasheet, PDF (2/16 Pages) Linear Technology – 550mA 2MHz Synchronous Step-Up DC/DC Converters

LTC3526L-2/LTC3526LB-2
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
(Notes 2, 5)..............................................–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 s 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
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3526LEDC-2#PBF
LTC3526LEDC-2#TRPBF LFFC
6-Lead (2mm × 2mm) Plastic DFN
LTC3526LBEDC-2#PBF LTC3526LBEDC-2#TRPBF LFFD
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
Input Voltage Range
I_LOAD = 1mA
0.68
0.8
V
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
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
V_FB = 1.30V
V_SHDN = 0V, Not Including Switch Leakage, V_OUT = 0V
Measured on V_OUT, Nonswitching
Measured on V_OUT, FB > 1.230V (LTC3526L-2 Only)
V_SW = 5V
V_SW = 5V, V_OUT = 0V
V_OUT = 3.3V
1
50
nA
0.01
1
µA
250
500
µA
9
18
µA
0.1
5
µA
0.1
10
µA
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
Minimum Duty Cycle
Switching Frequency
V_FB = 1.15V, V_OUT = 5V
V_FB = 1.3V
l 87
90
%
l
0
%
l 1.8
2
2.4
MHz
SHDN Pin Input High Voltage
0.8
V
SHDN Pin Input Low Voltage
0.3
V
3526lb2fa