MAX1818 500mA Low-Dropout Linear Regulator in SOT23 Electrical Characteristics (continued) (VIN = VOUT + 500mV or VIN = +2.5V, whichever is greater; SHDN = IN, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 3) PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS Load Regulation ∆VLDR IOUT = 1mA to 500mA 0.4 1.0 % Output Voltage Noise 10Hz to 1MHz, COUT = 3.3µF (ESR < 0.1Ω) 115 µVRMS SHUTDOWN Shutdown Supply Current IOFF SHDN = GND, VIN = 5.5V 0.1 15 µA V SHDN Input Threshold IH 2.5V < VIN < 5.5V 1.6 V VIL 2.5V < VIN < 5.5V 0.6 SHDN = IN or GND, T SHDN Input Bias Current I A = +25°C 1 25 SHDN nA TA = +85°C 5 POK OUTPUT POK Output Low Voltage VOL POK sinking 1mA 0.01 0.1 V Operating Voltage Range for Valid POK POK sinking 100µA 1.0 5.5 V POK Output High Leakage POK = 5.5V, TA = +25°C 1 25 Current nA TA = +85°C 5 POK Threshold Rising edge, referred to VOUT(NOMINAL) 90 93 96 % THERMAL PROTECTION Thermal Shutdown Temperature TSHDN 170 °C Thermal Shutdown Hysteresis ∆TSHDN 20 °C Note 3: All devices are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design. Note 4: The Dropout Voltage is defined as VIN - VOUT, when VOUT is 100mV below the value of VOUT measured for VIN = VOUT(NOM) + 500mV. Since the minimum input voltage is 2.5V, this specification is only meaningful when VOUT(NOM) > 2.5V. For VOUT(NOM) between 2.5V and 3.5V, use the following equations: Typical Dropout = -93mV/V x VOUT(NOM) + 445mV; Guaranteed Maximum Dropout = -137mV/V x VOUT(NOM) +7004mV. For VOUT(NOM) > 3.5V, Typical Dropout = 120mV; Maximum Dropout = 220mV. Typical Operating Characteristics (VIN = (VOUT + 500mV) or +2.5V, whichever is greater; SHDN = IN, CIN = 1μF, COUT = 3.3μF, TA = +25°C, unless otherwise noted.) GROUND PIN CURRENTGROUND PIN CURRENTGROUND PIN CURRENTvs. INPUT VOLTAGEvs. LOAD CURRENTvs. TEMPERATURE 250 160 170 ILOAD = 150mA ILOAD = 150mA 225 145 160 MAX1818 toc01 MAX1818 toc02 MAX1818 toc03 200 130 5.0V OUTPUT 2.5V OUTPUT 175 3.3V OUTPUT 150 115 150 1.8V OUTPUT 3.3V OUTPUT 1.8V OUTPUT 125 100 140 1.5V OUTPUT 100 2.5V OUTPUT 85 130 75 70 GROUND PIN CURRENT (µA) GROUND PIN CURRENT (µA) GROUND PIN CURRENT (µA) 50 120 55 25 0 40 110 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 INPUT VOLTAGE (V) LOAD CURRENT (A) TEMPERATURE (°C) www.maximintegrated.com Maxim Integrated │ 3
