GENERAL DEscriptION

The SGM3132 is a 4-channel white LED driver with ultra-low dropout current sources. Low 35mV dropout voltage makes the SGM3132 ideal for battery-powered applications.

The SGM3132 integrates an internal resistor to set the LED bias current and a deglitch circuit for filtering the noise on the EN pin. 16-step LED current levels can be set by a serial pulse input signal into the EN pin.

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

FEATURES

• Support up to 4 LEDs

• Ultra-Low 35mV Dropout Voltage at a 20mA Load

• 16-Step Brightness Control through One-Wire Interface

• LED Sink Current: 20mA

• ±3% Regulated LED Current Matching

• Internal Deglitch Circuit

• Thermal Shutdown

• 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

Mobile Phones, Digital Cameras, Camcorders

Portable E

PDAs, Palmtops, and Handy Terminals

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