Product Summary

The SGM3128 is a 3-Channel Low Dropout Low Side White LED Driver provides a simple solution for a matched current source for common Anode LED configuration. The SGM3128 can drive three LEDs or one LED at three times the current. The factory preset current value is 30mA per channel. The SGM3128 requires only a 50mV dropout voltage at a 30mA load on each output to match the LED brightness.

Parametrics

SGM3128 absolute maximum ratings: (1)VIN to GND: -0.3V to 6 V; (2)VOUT to GND: -0.3V to 6 V; (3)SHDN to GND: -0.3V to 6 V; (4)Storage Temperature Range: -65℃ to +150℃; (5)Junction Temperature: 160℃; (6)Operating Temperature Range: -40℃ to +85℃; (7)Power Dissipation, PD @ TA = 25℃, SOT23-6: 0.34W; (8)Package Thermal Resistance, SOT23-6, θJA: 250℃/W; (9)Lead Temperature Range (Soldering 10 sec): 260℃; (10)ESD Susceptibility, HBM: 2000V; MM: 400V.

Features

SGM3128 features: (1)Step-Up Voltage Converter; (2)Input Voltage Range: SGM3110-5.0: 2.7 to 5.0V; SGM3110-4.5: 2.7 to 4.5V; (3)MicroPower Consumption: 60μA; (4)Fixed 5V, 4.5V ± 4% Output; (5)Peak Current 250mA for 100ms; (6)High Frequency 750kHz Operation; (7)Logic-Controlled Shutdown; (8)Short-Circuit/Over-Temperature Protection; (9)Lead (Pb) Free SOT23-6 Package.

Diagrams

SGM3128 block diagram