LTC3542-1 datasheet(2/16 Pages) LINER

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LTC3542-1

35421f

ELECTRICAL CHARACTERISTICS

Input Supply Voltage (VIN)........................... –0.3V to 6V

VOUT, RUN Voltages......................................–0.3V to VIN

MODE Voltage................................–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 7) ............................. 125°C

Storage Temperature Range................... –65°C to 150°C

Reﬂow Peak Body Temperature ............................ 260°C

The

l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 3.6V unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN

Operating Voltage Range

2.5

5.5

RVOUT

Input Resistance of VOUT Pin

504

840

1176

kΩ

VOUT

Output Feedback Voltage (Note 4)

2.744

2.8

2.856

ΔVLINE_REG

Reference Voltage Line Regulation (Note 4) VIN = 2.5V to 5.5V

0.04

0.2

%/V

ΔVLOAD_REG

Output Voltage Load Regulation (Note 4)

ILOAD = 100mA to 500mA

0.02

0.2

Input DC Supply Current (Note 5)

Active Mode

Sleep Mode

Shutdown

VOUT = 2.5V

VOUT = 2.9V, MODE = 0V

RUN = 0V

300

0.1

500

μA

fOSC

Oscillator Frequency

VOUT = 2.8V

1.8

2.25

2.7

MHz

fSYNC

Synchronous Frequency

VOUT = 2.8V

MHz

ILIM

Peak Switch Current

VIN = 3V, VOUT = 2.5V, Duty Cycle < 35%

650

1000

RDS(ON)

P-Channel On Resistance (Note 6)

N-Channel On Resistance (Note 6)

ISW = 100mA

ISW = –100mA

0.5

0.35

0.65

0.55

ISW(LKG)

Switch Leakage Current

VIN = 5V, VRUN = 0V, VSW = 0V or 5V

±0.01

±1

μA

ABSOLUTE MAXIMUM RATINGS

(Note 1)

TOP VIEW

RUN

VOUT

VIN

GND

DC PACKAGE

6-LEAD (2mm

2mm) PLASTIC DFN

MODE/SYNC

TJMAX = 125°C, θJA = 89°C/W, θJC = 18°C/W

(SOLDERED TO A 4-LAYER BOARD, NOTE 3)

EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB

PIN CONFIGURATION

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC3542EDC-1#PBF

LTC3542EDC-1#TRPBF

LDWC

6-Lead (2mm

× 2mm) Plastic DFN

–40°C to 85°C

Consult LTC Marketing for parts speciﬁed with wider operating temperature ranges.

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/

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