1437

PolyPhase?

Tube

Active

PWM Signal

Step-Down

Positive

Buck

2

2

3V ~ 13.8V

500kHz

87.5%

No

Yes

I2C, PMBus

Enable, Frequency Control, Phase Control, Power Good

-40°C ~ 125°C (TJ)

Surface Mount

40-WFQFN Exposed Pad

40-QFN (6x6)

1380

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

2

2

3.5V ~ 30V

260kHz ~ 550kHz

99.4%

Yes

No

-

Enable, Power Good, Soft Start

-40°C ~ 85°C (TA)

Surface Mount

32-WFQFN Exposed Pad

32-QFN (5x5)

1356

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

2

2

3.5V ~ 30V

220kHz

99.4%

Yes

No

-

Enable, Frequency Control, Power Good, Soft Start

-40°C ~ 85°C (TA)

Surface Mount

16-SSOP (0.209", 5.30mm Width)

16-SSOP

1746

-

Tube

Active

Transistor Driver

Step-Up, Step-Up/Step-Down

Positive

Buck, Boost, Flyback

1

1

5V ~ 30V

150kHz, 300kHz

96%

Yes

Yes

-

Enable, Pulse Skipping, Soft Start

-40°C ~ 85°C (TA)

Surface Mount

16-SOIC (0.154", 3.90mm Width)

16-SOIC

2640

PolyPhase?

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

2

2

4V ~ 36V

260kHz ~ 550kHz

99.5%

Yes

No

-

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

-40°C ~ 85°C (TA)

Surface Mount

32-WFQFN Exposed Pad

32-QFN (5x5)

2521

PolyPhase?

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

2

2

4.5V ~ 24V

250kHz ~ 1MHz

-

Yes

Yes

I2C, PMBus

Enable, Frequency Control, Phase Control

-40°C ~ 125°C (TJ)

Surface Mount

40-WFQFN Exposed Pad

40-QFN (6x6)

1342

-

Tube

Active

Transistor Driver

Step-Up, Step-Up/Step-Down

Positive or Negative, Isolation Capable

Boost, Flyback, SEPIC

1

1

5.5V ~ 100V

100kHz ~ 1MHz

-

No

Yes

-

Enable, Frequency Control, Soft Start

-55°C ~ 150°C (TJ)

Surface Mount

10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad

10-MSOP-EP

1588

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

1

1

4V ~ 60V

105kHz ~ 835kHz, 350kHz ~ 535kHz

99%

Yes

No

-

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

-55°C ~ 150°C (TJ)

Surface Mount

20-WFQFN Exposed Pad

20-QFN (3x4)

4026

-

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

Active

Transistor Driver

Step-Up

Positive

Boost

1

1

8.6V ~ 12V

330kHz

80%

No

No

-

Current Limit, Enable

-40°C ~ 85°C (TA)

Surface Mount

8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

8-MSOP

2234

R1272S

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

Active

Transistor Driver

Step-Down

Positive

Buck

1

1

4V ~ 34V

250kHz ~ 1MHz

-

Yes

Yes

-

Current Limit, Enable, Power Good, Soft Start

-40°C ~ 105°C (TA)

Surface Mount

18-LFSOP (0.173", 4.40mm Width) Exposed Pad

18-HSOP

3124

R1272S

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

Active

Transistor Driver

Step-Down

Positive

Buck

1

1

4V ~ 34V

250kHz ~ 1MHz

-

Yes

Yes

-

Current Limit, Enable, Power Good, Soft Start

-40°C ~ 105°C (TA)

Surface Mount

18-LFSOP (0.173", 4.40mm Width) Exposed Pad

18-HSOP

1734

-

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

Active

Transistor Driver

Step-Up

Positive

Boost

1

1

2.75V ~ 9.8V

550kHz

-

No

No

-

Current Limit, Enable, Soft Start

-40°C ~ 150°C (TJ)

Surface Mount

8-WFDFN Exposed Pad

8-DFN (3x2)

1648

-

Tube

Not For New Designs

Transistor Driver

Step-Up/Step-Down

Positive, Isolation Capable

Flyback

1

1

13V ~ 36V

275kHz

50%

No

No

-

Enable, Soft Start

-40°C ~ 85°C (TA)

Surface Mount

8-SOIC (0.154", 3.90mm Width)

8-SOIC

1483

-

Tube

Active

Transistor Driver

Step-Down

Positive

Buck

1

1

2.75V ~ 4.5V

300kHz, 550kHz, 750kHz

99%

Yes

No

-

Enable, Frequency Control

-40°C ~ 85°C (TA)

Surface Mount

10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad

10-MSOP-EP

3234

-

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

Active

Transistor Driver

Step-Up/Step-Down

Positive

Buck-Boost

4

2

3V ~ 42V

250kHz ~ 2.2MHz

-

Yes

Yes

-

Current Limit, Power Good, Soft Start

-40°C ~ 125°C (TJ)

Surface Mount

40-WFQFN Exposed Pad

40-QFN (6x6)