LTC3409_15 Datasheet, PDF (2/16 Pages) Linear Technology – 600mA Low VIN Buck Regulator in 3mm 3mm DFN

LTC3409
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage................................... – 0.3V to 6V
RUN, V_FB, MODE, SYNC Voltages . – 0.3V to (V_IN + 0.3V)
SW Voltage ................................... – 0.3V to (V_IN + 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
V_FB 1
8 SYNC
GND 2
7 RUN
9
V_IN 3
6 SW
V_IN 4
5 MODE
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
T_JMAX = 125°C, θ_JA = 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 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/
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are T_A = 25°C. V_IN = 2.2V unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
V_RUN
I_RUN
V_MODE
I_MODE
V_SYNCTH
I_SYNC
V_FB
I_VFB
ΔV_OVL
ΔV_FB
ΔV_OUT
I_PK
V_LOADREG
V_IN
RUN Threshold
●
RUN Leakage Current
V_RUN = 0V or = 2.2V
MODE Threshold
●
MODE Leakage Current
V_MODE = 0V or = 2.2V
SYNC Threshold
●
SYNC Leakage Current
V_SYNC = 0V or = 2.2V
Regulated Feedback Voltage
(Note 4) T_A = 25°C
(Note 4) 0°C ≤ T_A ≤ 85°C
(Note 4) –40°C ≤ T_A ≤ 85°C
●
Feedback Current
ΔV_FBOVL Overvoltage Lockout
ΔV_OVL = ΔV_FBOVL – V_FB (Note 6)
Reference Voltage Line Regulation 1.6V < V_IN < 5.5V (Note 4)
●
Output Voltage Line Regulation
I_OUT = 100mA, 1.6V < V_IN < 5.5V
Peak Inductor Current
V_FB = 0.5V or V_OUT = 90%
Output Voltage Load Regulation V_OUT = 1.2V, Pulse Skip Mode, 0 < I_LOAD < 600mA
Input Voltage Range
●
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