S-1740/1741 Series 5.5 V INPUT, 100 mA VOLTAGE REGULATOR www.ablic.com WITH SUPPLY VOLTAGE DIVIDED OUTPUT www.ablicinc.com ABLIC Inc., 2016-2018 Rev.1.3 00 The S-1740/1741 Series, developed using CMOS technology, is a positive voltage regulator with the supply voltage divided output, which features super low current consumption and low dropout voltage. The regulator block has low current consumption of 0.35 A typ. and high-accuracy output voltage of 1.0%. The function of the supply voltage divided output is prepared in the S-1740/1741 Series. The supply voltage divided output is a function that divides the input voltage (V ) of the regulator into V /2 or V /3 and outputs the voltage. For example, this IN IN IN function makes it possible that the IC connects to a low voltage microcontroller A/D converter directly and the microcontroller monitors a battery voltage. Features Regulator block Output voltage: V = 1.0 V to 3.5 V, selectable in 0.05 V step OUT Input voltage: V = 1.5 V to 5.5 V IN Output voltage accuracy: 1.0% (1.0 V to 1.45 V output product: 15 mV) (Ta = +25C) Dropout voltage: 20 mV typ. (2.5 V output product, at I = 10 mA) (Ta = +25C) OUT Current consumption during operation: I = 0.35 A typ. (Ta = +25C) SS1 *1 Output current: Possible to output 100 mA ( at V V + 1.0 V) IN OUT(S) Input capacitor: A ceramic capacitor can be used. (1.0 F or more) Output capacitor: A ceramic capacitor can be used. (1.0 F to 100 F) Built-in overcurrent protection circuit: Limits overcurrent of output transistor. Supply voltage divider block Output voltage: V = V /2 (S-1740 Series) PMOUT IN V = V /3 (S-1741 Series) PMOUT IN Current consumption during operation: I = 0.15 A typ. (Ta = +25C) SS1P Output capacitor: A ceramic capacitor can be used. (100 nF to 220 nF) Built-in enable circuit: Ensures long battery life. Overall Operation temperature range: Ta = 40C to +85C Lead-free (Sn 100%), halogen-free *1. Please make sure that the loss of the IC will not exceed the power dissipation when the output current is large. Applications Constant-voltage power supply and battery voltage monitoring support for battery-powered device Constant-voltage power supply for portable communication device, digital camera, and digital audio player Constant-voltage power supply for home electric appliance Packages SOT-23-5 HSNT-6(1212) HSNT-4(1010) 1 5.5 V INPUT, 100 mA VOLTAGE REGULATOR WITH SUPPLY VOLTAGE DIVIDED OUTPUT S-1740/1741 Series Rev.1.3 00 Block Diagram 1. S-1740/1741 Series A / C type (SOT-23-5, HSNT-6(1212)) *1 VIN VOUT SW Overcurrent protection circuit + PMOUT + PMEN Enable circuit Reference voltage circuit VSS Product Type Output Voltage (V ) PMEN Pin Logic PMOUT S-1740 Series A type Active V /2 IN S-1740 Series C type Active S-1741 Series A type Active V /3 IN S-1741 Series C type Active *1. Parasitic diode Figure 1 2