SiC437, SiC438

www.vishay.com

Vishay Siliconix

S18-0030-Rev. B, 15-Jan-18

21

Document Number: 75921

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

PRODUCT SUMMARY

Part number

SiC437A

SiC437B

SiC437C

SiC437D

Description

12 A, 4.5 V to 28 V input,

300 kHz, 500 kHz,

750 kHz, 1 MHz,

Synchronous Buck

Regulator with

Ultrasonic Mode and

Internal 5 V Bias

12 A, 4.5 V to 28 V input,

300 kHz, 500 kHz,

750 kHz, 1 MHz,

Synchronous Buck

Regulator with

Power Save Mode and

Internal 5 V Bias

12 A, 3 V to 28 V input,

300 kHz, 500 kHz,

750 kHz, 1 MHz,

Synchronous Buck

Regulator with

Ultrasonic Mode,

requires external 5 V Bias

12 A, 3 V to 28 V input,

300 kHz, 500 kHz,

750 kHz, 1 MHz,

Synchronous Buck

Regulator with

Power Save Mode,

requires external 5 V Bias

Input voltage min. (V)

4.5

4.5

3

3

Input voltage max. (V)

28

28

28

28

Output voltage min. (V)

0.6

0.6

0.6

0.6

Output voltage max. (V)

Continuous current (A)

12

12

12

12

Switch frequency min. (kHz)

300

300

300

300

Switch frequency max. (kHz)

1000

1000

1000

1000

Pre-bias operation (yes / no)

Yes

Yes

Yes

Yes

Internal bias reg. (yes / no)

Yes

Yes

No

No

Compensation

Internal

Internal

Internal

Internal

Enable (yes / no)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Over current protection

Yes

Yes

Yes

Yes

Protection

OVP, OCP, UVP/SCP,

OTP, UVLO

OVP, OCP, UVP/SCP,

OTP, UVLO

OVP, OCP, UVP/SCP,

OTP, UVLO

OVP, OCP, UVP/SCP,

OTP, UVLO

Light load mode

Selectable ultrasonic

Selectable powersave

Selectable ultrasonic

Selectable powersave

Peak efficiency (%)

97

97

97

97

Package type

PowerPAK MLP44-24L

PowerPAK MLP44-24L

PowerPAK MLP44-24L

PowerPAK MLP44-24L

Package size (W, L, H) (mm)

4 x 4 x 0.75

4 x 4 x 0.75

4 x 4 x 0.75

4 x 4 x 0.75

Status code

111

1

Product type

microBUCK

(step down regulator)

microBUCK

(step down regulator)

microBUCK

(step down regulator)

microBUCK

(step down regulator)

Applications

Computing, consumer,

industrial, healthcare,

networking

Computing, consumer,

industrial, healthcare,

networking

Computing, consumer,

industrial, healthcare,

networking

Computing, consumer,

industrial, healthcare,

networking