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 Equipment
PDAs, Palmtops, and Handy Terminals
Battery-Powered Equipment