1248

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

1

1

2V ~ 10V

-

100%

No

Yes

-

Enable, Soft Start

-45°C ~ 85°C (TA)

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SO

1241

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

1

1

4V ~ 38V

235kHz ~ 750kHz

99%

Yes

No

-

Enable, Frequency Control, Power Good, Soft Start, Tracking

-40°C ~ 125°C (TJ)

Surface Mount

24-WFQFN Exposed Pad

24-QFN (3x5)

1238

-

Tube

Active

Transistor Driver

Step-Up/Step-Down

Positive, Isolation Capable

Forward Converter, Half-Bridge

1

1

9V ~ 16V

Up to 1MHz

80%

Yes

Yes

-

Current Limit, Enable, Soft Start

-40°C ~ 105°C (TA)

Surface Mount

20-SSOP (0.154", 3.90mm Width)

20-QSOP

1235

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

2

2

4.5V ~ 40V

100kHz ~ 3MHz

99%

Yes

Yes

-

Enable, Frequency Control, Power Good, Soft Start, Tracking

-40°C ~ 150°C (TJ)

Surface Mount, Wettable Flank

28-WFQFN Exposed Pad

28-QFN (4x5)

50

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

2

2

4V ~ 30V

250kHz ~ 780kHz

97.2%

Yes

No

-

Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking

-40°C ~ 85°C (TA)

Surface Mount

28-WFQFN Exposed Pad

28-QFN (4x5)

50

-

Tube

Active

PWM Signal

Step-Up/Step-Down

Positive

Buck-Boost

1

2

4.5V ~ 60V

90kHz ~ 650kHz

-

Yes

Yes

-

Current Limit, Enable, Power Good

-40°C ~ 125°C (TA)

Surface Mount

38-TFSOP (0.173", 4.40mm Width) Exposed Pad

38-HTSSOP

1255

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

1

1

4.5V ~ 5.5V

200kHz, 300kHz, 450kHz, 600kHz

100%

Yes

No

-

Current Limit, Enable, On Time Control, Power Good

-40°C ~ 85°C (TA)

Surface Mount

20-SSOP (0.154", 3.90mm Width)

20-QSOP

50

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

2

2

4.75V ~ 23V

100kHz ~ 600kHz

-

Yes

Yes

-

Current Limit, Enable, Frequency Control, Reset

-40°C ~ 85°C (TA)

Surface Mount

24-SSOP (0.154", 3.90mm Width)

24-QSOP

50

PolyPhase?

Tape & Reel (TR),Cut Tape (CT)

Active

PWM Signal

Step-Down

Positive

Buck

2

2

3V ~ 13.8V

500kHz

87.5%

No

Yes

I2C, PMBus

Enable, Phase Control

-40°C ~ 125°C (TJ)

Surface Mount

40-WFQFN Exposed Pad

40-QFN (6x6)

50

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

1

1

4.5V ~ 28V

200kHz ~ 1.4MHz

-

Yes

No

-

Current Limit, Enable, Frequency Control, Soft Start

-40°C ~ 85°C (TA)

Surface Mount

20-WFQFN Exposed Pad

20-TQFN (4x4)

50

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

1

1

4.5V ~ 28V

200kHz ~ 1.4MHz

-

Yes

No

-

Current Limit, Enable, Frequency Control, Power Good, Soft Start

-40°C ~ 85°C (TA)

Surface Mount

16-WQFN Exposed Pad

16-TQFN (4x4)

50

-

Bulk,Tube

Active

Transistor Driver

Step-Up, Step-Up/Step-Down

Positive

Boost, SEPIC

2

2

8.5V ~ 36V

75kHz ~ 500kHz

96%

No

Yes

-

Enable, Frequency Control, Phase Control, Soft Start

-40°C ~ 85°C (TA)

Surface Mount

24-SSOP (0.154", 3.90mm Width)

24-SSOP

50

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

1

1

4.5V ~ 38V

250kHz ~ 770kHz

-

Yes

No

-

Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking

-40°C ~ 125°C (TJ)

Surface Mount

24-TSSOP (0.173", 4.40mm Width) Exposed Pad

24-TSSOP

50

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

2

2

5.5V ~ 23V

200kHz ~ 2.2MHz

-

Yes

Yes

-

Current Limit, Enable, Frequency Control, Phase Control, Power Good, Reset, Sequencing, Tracking

-40°C ~ 125°C (TJ)

Surface Mount

40-WFQFN Exposed Pad

40-TQFN (6x6)

50

-

Tube

Active

Transistor Driver

Step-Up

Positive

Boost

1

1

4.35V ~ 14V

-

-

Yes

No

-

Enable, Power Good, Soft Start

-40°C ~ 125°C (TJ)

Surface Mount

16-TSSOP (0.173", 4.40mm Width) Exposed Pad

16-TSSOP-EP