Reverse-blocking, pFET integrated power controllers

April 27, 2016 // By Graham Prophet
Silego Technology has added pFET integrated power controllers; a family of self-powered, 1.6 mm², single-channel and dual-channel very low-power controllers with reverse-current protection. Designed for all high-side, 1.5V to 5.5V power rail applications, these pFET power controllers achieve an ultra-stable 23 mΩ RDS(ON) over temperature.

Using Silego’s proprietary CuFET technology, these products can handle load currents up to 4A and exhibit low thermal resistance. The reverse-current protection feature is useful in applications where a V OUT-to-VIN backfeed current to the V IN power source is to be avoided. Compared to other pFET load switches currently available these products combine higher-performance lower on-resistance pFET structures, lower supply current operation, and multiple protection features into very pcb space-efficient solutions.

 

Using Silego’s p-channel MOSFET design IP, these new additions to its high-performance pFET integrated power switches include (4) dual-channel, 2-A devices and (1) single-channel, 4-A device:

 







Product

VIN Range

RDSON

Single/Dual

tVOUT(R)

OFF-ON Polarity

SLG59M1638V

1.5 V - 5.5 V

45 mΩ

Dual

0.145 ms

High

SLG59M1639V

1.5 V - 5.5 V

45 mΩ

Dual

1 ms

High

SLG59M1640V

1.5 V - 5.5 V

45 mΩ

Dual

1.1 µs

Low

SLG59M1641V

1.5 V - 5.5 V

45 mΩ

Dual

1.1 µs

Low

SLG59M1649V

1.5 V - 5.5 V

23 mΩ

Single

0.130 ms

High

 

Designed to operate over the industrial -40°C to 85°C temperature range, the micropower, pFET integrated power control switches are available in a 1.0 x 1.6 mm package.

 

Key features include:

 




VIN

SLG59M1638/39/40/41

SLG59M1649V

5 V

45 mΩ

23 mΩ

3 V

60 mΩ

31 mΩ

1.5 V

80 mΩ

42 mΩ

 

Built-in, system-level features;

Reverse-voltage detection

Fixed V OUT Slew Rates from 1 µsec to 1 msec

125°C thermal shutdown protection

Fast V OUT discharge (SLG59H1638V & SLG59M1640V)

 

Open-drain signalling (SLG59M1649V)

 

Silego; www.silego.com