封装管脚图
产品描述
The SGM3139 is a 6-channel ultra low dropout constant source parallel LED driver. The SGM3139 uses an internal resistor to set the bias current for six LEDs, which are matched to ±3%.
The SGM3139 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 SGM3139 requires only a 35mV dropout voltage at a 20mA load. The feature makes SGM3139 ideal for battery-operated systems, such as personal digital assistants.
The SGM3139 is available in Green TQFN-3 × 3-16L and TDFN-3 × 3-10L packages and is specified over an ambient temperature range of -40°C to + 85°C .
产品特性
Ultra Low Dropout: 35mV/20mA
Support up to 6 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°C to +85°C
Available in Green TQFN-3×3-16L and TDFN-3×3-10L Packages