SG Micro Corp

SGM37891 Single Output, Inductorless type LED Flash Driver

SG MICRO has recently introduced economic flash drivers: SGM37891(720mA) and SGM37891A(1200mA). The SGM37891 series are single LED flash drivers which integrate current source. The inductorless structure of flash driver simplifies the application circuit and the output permits LED cathode grounding for thermally enhanced, low EMI and compact layouts.

The SGM37891 can program driver current by the 1-Wire interface. It can be easy performed 6/8 current Level adjustment. Additionally, Torch function can be affected by the TORCH pin. The torch current is fixed at the 1/4 ratio of the flash current. When flash current lasts continuously and the time exceeds 650ms, the LED current will be turned off. During flash time, if the battery voltage falls below the input low detection threshold or the temperature exceeds 165, the SGM37891 will reduce LED current automatically.

The SGM37891 is an ideal solution for multimedia flash application. The SGM37891 is available in Green  UTDFN-1.5×2-6L and TSOT-23-6 packages. It is rated over -40 to +85 operating temperature range.

Ordering Information:

For samples, please contact SGMICRO’s local offices or distributors, or log into www.sg-micro.com and leave a message.

SGM37891/A are in mass production and the typical lead time is 6-8 weeks.

Part#

VIN (V)

Interface

Soft-start up

Output Current (mA)

ISHDN (μA)

SGM37891

2.7~5.5

PSK

Yes

720

<1

SGM37891A

2.7~5.5

PSK

Yes

1200

<1



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