LTC3427_15 Datasheet, PDF (2/12 Pages) Linear Technology – 500mA, 1.25MHz Synchronous Step-Up DC/DC Converter in 2mm 2mm DFN Package

LTC3427
ABSOLUTE AXI U RATI GS
(Note 1)
V_IN, V_OUT Voltages ...................................... – 0.3V to 6V
SHDN, FB Voltages ..................................... – 0.3V to 6V
SW Voltage
DC .......................................................... – 0.3V to 6V
Pulsed < 100ns ...................................... – 0.3V to 7V
Operating Temperature Range
(Notes 2, 5) ............................................ – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 125°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
654
7
123
DC PACKAGE
6-LEAD (2mm × 2mm) PLASTIC DFN
T_JMAX = 125°C, θ_JA = 60°C/W TO 85°C/W
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB
ORDER PART NUMBER DC PART MARKING
LTC3427EDC
LBSY
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
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T_A = 25°C.
V_IN = 2.4V, V_OUT = 3.3V unless otherwise specified.
PARAMETER
CONDITIONS
MIN TYP MAX
Minimum Start-Up Voltage
I_LOAD < 1mA
●
1.6
1.8
Output Voltage Adjust Range
● 1.8
5.25
Feedback Voltage
● 1.215 1.24 1.265
Feedback Input Current
Quiescent Current—Shutdown
Quiescent Current—Active
V_FB = 1.24V
V_SHDN = 0V, V_OUT = 0V
V_FB = 1.5V (Note 3)
1
50
0.01
1
350 550
NMOS Switch Leakage
0.1
5
PMOS Switch Leakage
0.1
5
NMOS Switch-On Resistance
0.525
PMOS Switch-On Resistance
0.575
NMOS Current Limit
● 500
Current Limit Delay to Output
(Note 4)
40
Maximum Duty Cycle
Minimum Duty Cycle
V_FB = 1V
V_FB = 1.5V
●
80
87
●
0
Frequency
●
0.9
1.25
1.5
SHDN Input High
1
SHDN Input Low
0.35
SHDN Input Current
V_SHDN = 5.5V
0.01
1
Soft-Start Time
2
UNITS
V
V
V
nA
µA
µA
µA
µA
Ω
Ω
mA
ns
%
%
MHz
V
V
µA
ms
3427fa
2