Product Summary

The SGM3124 is a charge pump with PWM brightness control for white LED supplies in LCD display backlight applications. The supply voltage ranges from 2.7V to 5.5V, it is ideally suited for all applications powered by a single Li-ion battery cell or three to four NiCd, NiMH, or alkaline battery cells.

Parametrics

SGM3124 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

SGM3124 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

SGM3124 block diagram