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LTC3409A Datasheet(PDF) 2 Page - Linear Technology

Part No. LTC3409A
Description  600mA Low VIN Buck Regulator in 3mm 3mm DFN
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LTC3409A Datasheet(HTML) 2 Page - Linear Technology

 
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LTC3409A
2
3409af
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage................................... –0.3V to 6V
RUN, VFB, MODE, SYNC Voltages . –0.3V to (VIN + 0.3V)
SW Voltage ................................... –0.3V to (VIN + 0.3V)
Operating Temperature Range (Note 2) ..–40°C to 85°C
Junction Temperature (Note 3) ........................... 125°C
Storage Temperature Range.................. –65°C to 125°C
The
denotes specifications which apply over the full operating
temperature range, otherwise specifications are TA = 25°C. VIN = 2.2V unless otherwise specified.
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3409AEDD#PBF
LTC3409AEDD#TRPBF
LFGY
8-Lead (3mm
× 3mm) Plastic DFN
–40°C to 85°C
LTC3409AIDD#PBF
LTC3409AIDD#TRPBF
LFGY
8-Lead (3mm
× 3mm) Plastic DFN
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *Temperature grades are identified by a label on the shipping container.
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/
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Input Voltage Range
l
1.6
5.5
V
VFB
Regulated Feedback Voltage
(Note 4) TA = 25°C
(Note 4) 0°C ≤ TA ≤ 85°C
(Note 4) –40°C ≤ TA ≤ 85°C
l
0.604
0.600
0.598
0.612
0.612
0.612
0.620
0.624
0.626
V
V
V
IVFB
Feedback Current
VFB = 0.612V
±30
nA
ΔVOVL
ΔVFBOVL Overvoltage Lockout
ΔVOVL = ΔVFBOVL – VFB (Note 6)
35
61
85
mV
ΔVFB
Reference Voltage Line Regulation
1.6V < VIN < 5.5V (Note 4)
1.9V ≤ VIN ≤ 3.6V, 0°C ≤ TA ≤ 85°C (Note 4)
l
0.04
0.05
0.4
0.5
%/V
%
IPK
Peak Inductor Current
VFB = 0.5V or VOUT = 90%
0.75
1
1.3
A
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
V
IRUN
RUN Leakage Current
VRUN = 0V or = 2.2V
0.01
1
μA
VMODE
MODE Threshold
l
0.3
0.65
1.1
V
IMODE
MODE Leakage Current
VMODE = 0V or = 2.2V
0.01
1
μA
ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
TOP VIEW
9
DD PACKAGE
8-LEAD (3mm
3mm) PLASTIC DFN
5
6
7
8
4
3
2
1
VFB
GND
VIN
VIN
SYNC
RUN
SW
MODE
TJMAX = 125°C, θJA = 43°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
(Note 1)


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