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| LTC3409A_15 Datasheet, PDF (2/16 Pages) Linear Technology – 600mA Low VIN Buck Regulator in 3mm 3mm DFN | |||
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LTC3409A
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage................................... â0.3V to 6V
RUN, VFB, MODE, SYNC Voltages . â0.3V to (VIN + 0.3V)
SW Voltage ................................... â0.3V to (VIN + 0.3V)
Operating Temperature Range (Note 2) ..â40°C to 85°C
Junction Temperature (Note 3) ........................... 125°C
Storage Temperature Range.................. â65°C to 125°C
PIN CONFIGURATION
TOP VIEW
VFB 1
8 SYNC
GND 2
7 RUN
9
VIN 3
6 SW
VIN 4
5 MODE
DD PACKAGE
8-LEAD (3mm s 3mm) PLASTIC DFN
TJMAX = 125°C, θJA = 43°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3409AEDD#PBF
LTC3409AEDD#TRPBF LFGY
8-Lead (3mm à 3mm) Plastic DFN
â40°C to 85°C
LTC3409AIDD#PBF
LTC3409AIDD#TRPBF LFGY
8-Lead (3mm à 3mm) Plastic DFN
â40°C to 85°C
Consult LTC Marketing for parts speciï¬ed with wider operating temperature ranges. *Temperature grades are identiï¬ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based ï¬nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel speciï¬cations, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The â denotes speciï¬cations which apply over the full operating
temperature range, otherwise speciï¬cations are TA = 25°C. VIN = 2.2V unless otherwise speciï¬ed.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
VIN
Input Voltage Range
l 1.6
5.5
VFB
Regulated Feedback Voltage
(Note 4) TA = 25°C
(Note 4) 0°C ⤠TA ⤠85°C
(Note 4) â40°C ⤠TA ⤠85°C
IVFB
Feedback Current
VFB = 0.612V
0.604
0.600
l 0.598
0.612
0.612
0.612
0.620
0.624
0.626
±30
ÎVOVL
ÎVFBOVL Overvoltage Lockout
ÎVOVL = ÎVFBOVL â VFB (Note 6)
35
61
85
ÎVFB
Reference Voltage Line Regulation 1.6V < VIN < 5.5V (Note 4)
l
1.9V ⤠VIN ⤠3.6V, 0°C ⤠TA ⤠85°C (Note 4)
0.04
0.4
0.05
0.5
IPK
Peak Inductor Current
VFB = 0.5V or VOUT = 90%
0.75
1
1.3
VLOADREG
Output Voltage Load Regulation
VOUT = 1.8V, VMODE = 0V, 1mA < ILOAD < 210mA,
0°C ⤠TA ⤠85°C (Note 8)
0.2
0.5
VRUN
RUN Threshold
l 0.3
0.65
1.1
IRUN
VMODE
IMODE
RUN Leakage Current
MODE Threshold
MODE Leakage Current
VRUN = 0V or = 2.2V
VMODE = 0V or = 2.2V
0.01
1
l 0.3
0.65
1.1
0.01
1
UNITS
V
V
V
V
nA
mV
%/V
%
A
%
V
μA
V
μA
3409af
2
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