圣邦微电子

SGM3132 4-Channel 1-Wire Dimming LED Driver with Ultra Low Dropout Current Source

GENERAL DESCRIPTION

The SGM3132 is a 4-channel ultra low dropout constant source parallel LED driver. The SGM3132 uses an internal resistor to set the bias current for four LEDs.

The SGM3132 incorporates a single wire interface to program the output current at 16 continuous steps. It has an internal deglitch circuit for filtering the noise of the EN input.

The SGM3132 requires only a 35mV dropout voltage at a 20mA load. The feature makes SGM3132 ideal for battery-operated systems, such as personal digital assistants.

The SGM3132 is available in Green TQFN-3×3-16L, TDFN-2×2-8L and MSOP-8 packages and is specified over an ambient temperature range of -40 to +85.


PIN CONFIGURATIONS

 

FEATURES

• Ultra Low Dropout: 35mV/20mA
• Support up to 4 LEDs
• LED Sink Current 20mA
• ±3% LED Current Matching
• Deglitch Circuit
• Thermal Shutdown Protection
• 16-Step Brightness Control
• No EMI and Switch Noise
• Operating Temperature Range: -40 to +85
• Available in Green TQFN-3×3-16L, TDFN-2×2-8L
    and MSOP-8 Packages

APPLICATIONS

Wireless Handsets
MP3, MP4, and PMP
Cellular Phones
Portable Communication Devices
Digital Cameras, Camcorders
PDAs, Palmtops, and Handy Terminals
Battery-Powered Equipment


ORDERING INFORMATION

Part Number Status Package Pins Pb-Free Temp Range
SGM3132YTQ16G/TR Production TQFN-3×3-16L 16 Y -40℃ to +85℃ Samples
SGM3132YDE8G/TR Production TDFN-2×2-8L 8 Y -40℃ to +85℃ Samples
SGM3132YMS8G/TR Production MSOP-8 8 Y -40℃ to +85℃ Samples

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