LTC3409 Ver la hoja de datos (PDF) - Linear Technology
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LTC3409 Datasheet PDF : 16 Pages
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LTC3409
ABSOLUTE MAXIMUM RATINGS
(Note 1)
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
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 × 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
LTC3409EDD#PBF
LTC3409EDD#TRPBF
LBNM
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 85°C
LTC3409IDD#PBF
LTC3409IDD#TRPBF
LBNM
8-Lead (3mm × 3mm) Plastic DFN
–40°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
VRUN
IRUN
VMODE
IMODE
VSYNCTH
ISYNC
VFB
IVFB
ΔVOVL
ΔVFB
ΔVOUT
IPK
VLOADREG
VIN
RUN Threshold
â—
RUN Leakage Current
VRUN = 0V or = 2.2V
MODE Threshold
â—
MODE Leakage Current
VMODE = 0V or = 2.2V
SYNC Threshold
â—
SYNC Leakage Current
VSYNC = 0V or = 2.2V
Regulated Feedback Voltage
(Note 4) TA = 25°C
(Note 4) 0°C ≤ TA ≤ 85°C
(Note 4) –40°C ≤ TA ≤ 85°C
â—
Feedback Current
ΔVFBOVL Overvoltage Lockout
ΔVOVL = ΔVFBOVL – VFB (Note 6)
Reference Voltage Line Regulation 1.6V < VIN < 5.5V (Note 4)
â—
Output Voltage Line Regulation
IOUT = 100mA, 1.6V < VIN < 5.5V
Peak Inductor Current
VFB = 0.5V or VOUT = 90%
Output Voltage Load Regulation VOUT = 1.2V, Pulse Skip Mode, 0 < ILOAD < 600mA
Input Voltage Range
â—
0.3
0.3
0.3
0.6007
0.5992
0.5977
35
0.75
1.6
0.65
0.01
0.65
0.01
0.65
0.01
0.6130
0.6130
0.6130
61
0.04
0.04
1
0.5
1.1
1
1.1
1
1.1
1
0.6252
0.6268
0.6283
±30
85
0.4
0.4
1.3
5.5
UNITS
V
μA
V
μA
V
μA
V
V
V
nA
mV
%/V
%/V
A
%
V
3409fc
2
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