2

4251b12f

LTC4251B/LTC4251B-1/

LTC4251B-2

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

SENSE 1

6 GATE

5 UV/OV*

4 TIMER

TOP VIEW

S6 PACKAGE

6-LEAD PLASTIC SOT-23

*UV FOR LTC4251B-2

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

l

11.5

13

14.5

V

5

Ω

l

0.8

2

mA

l

9.2

11.5

V

1

V

Circuit Breaker Current Limit Voltage

l

40

50

60

mV

Analog Current Limit Voltage

l

80

100

120

mV

Fast Current Limit Voltage

l

150

200

300

mV

GATE Pin Output Current

l

40

58

17

190

80

μA

mA

mA

External MOSFET Gate Drive

l

10

12

V

The

ORDER INFORMATION

Gate, UV/OV, Timer Voltage........................ –0.3V to 16V

Sense Voltage ............................................ –0.6V to 16V

Current Out of Sense Pin (20μs Pulse).............. –200mA

Maximum Junction Temperature .......................... 125°C

Operating Temperature Range

LTC4251BC/LTC4251BC-1/LTC4251BC-2....0°C to 70°C

LTC4251BI/LTC4251BI-1/LTC4251BI-2 .. –40°C to 85°C

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

Lead Temperature (Soldering, 10 sec)................... 300°C

Lead Free Finish

TAPE AND REEL (MINI)

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC4251BCS6#TRMPBF

LTC4251BCS6#TRPBF

LTGCT

6-Lead Plastic SOT-23

0°C to 70°C

LTC4251BIS6#TRMPBF

LTC4251BIS6#TRPBF

LTGCT

6-Lead Plastic SOT-23

–40°C to 85°C

LTC4251BCS6-1#TRMPBF

LTC4251BCS6-1#TRPBF

LTGDV

6-Lead Plastic SOT-23

0°C to 70°C

LTC4251BIS6-1#TRMPBF

LTC4251BIS6-1#TRPBF

LTGDV

6-Lead Plastic SOT-23

–40°C to 85°C

LTC4251BCS6-2#TRMPBF

LTC4251BCS6-2#TRPBF

LTGDW

6-Lead Plastic SOT-23

0°C to 70°C

LTC4251BIS6-2#TRMPBF

LTC4251BIS6-2#TRPBF

LTGDW

6-Lead Plastic SOT-23

–40°C to 85°C

TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container.

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

Consult LTC Marketing for information on lead based finish parts.