LTC4251/LTC4251-1/

LTC4251-2

2

425112fa

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

●

11.5

13

14.5

V

5

Ω

●

0.8

2

mA

●

9.2

11.5

V

1V

Circuit Breaker Current Limit Voltage

●

40

50

60

mV

Analog Current Limit Voltage

●

80

100

120

mV

Fast Current Limit Voltage

●

150

200

300

mV

GATE Pin Output Current

●

40

58

80

µA

17

mA

190

mA

External MOSFET Gate Drive

●

10

12

V

Gate Low Threshold

(Before Gate Ramp-Up)

0.5

V

UV Threshold High

LTC4251/LTC4251-2

●

3.075

3.225

3.375

V

LTC4251-1

●

2.300

2.420

2.540

V

UV Threshold Low

LTC4251/LTC4251-2

●

2.775

2.925

3.075

V

LTC4251-1

●

2.050

2.160

2.270

V

UV Hysteresis

LTC4251/LTC4251-2

0.30

V

LTC4251-1

0.26

V

OV Threshold High

LTC4251

●

5.85

6.15

6.45

V

LTC4251-1

●

5.86

6.17

6.48

V

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

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

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

Current Out of Sense Pin (20

µs Pulse) ............. –200mA

Maximum Junction Temperature .......................... 125

°C

Operating Temperature Range

LTC4251C/LTC4251-1C/LTC4251-2C ...... 0

°C to 70°C

LTC4251I/LTC4251-1I/LTC4251-2I .... – 40

°C to 85°C

Storage Temperature Range ................. – 65

°C to 150°C

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

°C

SENSE 1

6 GATE

5 UV/OV*

4 TIMER

TOP VIEW

S6 PACKAGE

6-LEAD PLASTIC SOT-23

*UV FOR LTC4251-2

ORDER PART NUMBER

S6 PART MARKING

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

LTC4251CS6

LTC4251IS6

LTC4251-

1CS6

LTC4251-1IS6

LTC4251-

2CS6

LTC4251-2IS6

LTUQ

LTUR

LTQU

LTQV

LTK6

LTAAZ

Order Options Tape and Reel: Add #TR

Lead Free: Add #PBF

Lead Free Tape and Reel: Add #TRPBF

Lead Free Part Marking: http://www.linear.com/leadfree/