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LTC4232-1

42321f

For more information www.linear.com/LTC4232-1

SENSE

TOP VIEW

DHC PACKAGE

16-LEAD (5mm

× 3mm) PLASTIC DFN

VDD

ISET

IMON

FLT

GATE

OUT

VDD

TIMER

INTVCC

GND

OUT

TJMAX = 125°C, θJA = 43°C/W

EXPOSED PAD (PIN 17) IS SENSE,

θJA = 43°C/W SOLDERED, OTHERWISE θJA = 140°C/W

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

Supply Voltage (VDD)................................. –0.3V to 28V

Input Voltages

FB, OV, UV ..............................................–0.3V to 12V

TIMER................................................... –0.3V to 3.5V

SENSE .............................VDD – 10V or – 0.3V to VDD

Output Voltages

ISET, IMON................................................. –0.3V to 3V

PG, FLT .................................................. –0.3V to 35V

OUT ............................................ –0.3V to VDD + 0.3V

INTVCC.................................................. –0.3V to 3.5V

GATE (Note 3)........................................ –0.3V to 33V

Operating Temperature Range

LTC4232C-1............................................. 0°C to 70°C

LTC4232I-1 ..........................................–40°C to 85°C

Junction Temperature (Notes 4, 5)........................ 125°C

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

(Notes 1, 2)

ELECTRICAL CHARACTERISTICS The

denotes those specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VDD = 12V unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

DC Characteristics

VDD

Input Supply Range

2.9

IDD

Input Supply Current

MOSFET On, No Load

1.6

VDD(UVL)

Input Supply Undervoltage Lockout

VDD Rising

2.63

2.73

2.85

IOUT

OUT Pin Leakage Current

VOUT = VGATE = 0V, VDD = 15V

VOUT = VGATE = 12V

±150

µA

RON

MOSFET + Sense Resistor On-Resistance

mΩ

ILIM(TH)

Current Limit Threshold

V = 1.23V, ISET Open

5.0

5.6

6.1

VFB = 0V, ISET Open

1.2

1.5

1.8

VFB = 1.23V, RSET = 20kΩ

2.6

2.9

3.3

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC4232CDHC-1#PBF

LTC4232CDHC-1#TRPBF 42321

16-Lead (5mm

× 3mm) Plastic DFN

0°C to 70°C

LTC4232IDHC-1#PBF

LTC4232IDHC-1#TRPBF

42321

16-Lead (5mm

× 3mm) Plastic DFN

–40°C to 85°C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

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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