LTC3542 Datasheet, PDF (2/16 Pages) Linear Technology – 500mA, 2.25MHz Synchronous Step-Down DC/DC Converter

LTC3542
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (V_IN) ........................... –0.3V to 6V
V_FB, RUN Voltages .......................................–0.3V to V_IN
MODE Voltage................................–0.3V to (V_IN + 0.3V)
SW Voltage ....................................–0.3V to (V_IN + 0.3V)
Operating Temperature Range (Note 2)
LTC3542E ............................................ –40°C to 85°C
LTC3542I ........................................... –40°C to 125°C
Junction Temperature (Note 7) ............................. 125°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
TSOT-23............................................................ 300°C
Reflow Peak Body Temperature (DFN) .................. 260°C
PIN CONFIGURATION
TOP VIEW
V_FB 1
6 RUN
V_IN 2
7
5
MODE/
SYNC
GND 3
4 SW
DC PACKAGE
6-LEAD (2mm × 2mm) PLASTIC DFN
T_JMAX = 125°C, θ_JA = 102°C/W, θ_JC = 20°C/W (SOLDERED TO A 4-LAYER BOARD, NOTE 3)
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB
TOP VIEW
V_IN 1
GND 2
V_FB 3
6 SW
5 MODE/SYNC
4 RUN
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
T_JMAX = 125°C, θ_JA = 215°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3542EDC#PBF
LTC3542EDC#TRPBF
LCFR
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 85°C
LTC3542IDC#PBF
LTC3542IDC#TRPBF
LCFR
6-Lead (2mm × 2mm) Plastic DFN
–40°C to 125°C
LTC3542ES6#PBF
LTC3542ES6#TRPBF
LCFS
6-Lead Plastic TSOT-23
–40°C to 85°C
LTC3542IS6#PBF
LTC3542IS6#TRPBF
LCFS
6-Lead Plastic TSOT-23
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is 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 the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_IN = 3.6V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
V_IN
I_FB
V_FB
ΔV_{LINE_REG}
ΔV_{LOAD_REG}
Operating Voltage Range
Feedback Input Current
Feedback Voltage (Note 4)
Reference Voltage Line Regulation (Note 4) V_IN = 2.5V to 5.5V
Output Voltage Load Regulation (Note 4) I_LOAD = 100mA to 500mA
● 2.5
5.5
V
±30
nA
● 0.588 0.6 0.612
V
0.04
0.2
%/V
0.02
0.2
%
3542fa
2