Built in low on-resistor provides low dropout voltage and large output current. The lower the output current is, the more quiescent current can impact the conversion efficiency. high-speed, low quiescent current, and tiny SOT23 packag-ing enable use in a variety of applications. Quiescent current, while nominal, can also substantially impact a system’s power transfer efficiency during light The key feature of this device is its quiescent current, which is just 1.4 µA at maximum output current. To test the quiescent current profile, I used the FastLog functionality to record the current profile. Supply Voltage *2 VCC 4.37 45.0 V Startup Voltage *3 VCC 3.0 - V Output Current IOUT 0 200 mA BD750L2EFJ/FP/FP3-C Parameter Symbol Min Max Unit Supply Voltage 5.8*2 VCC 45.0 V Startup 3.0Voltage *3 VCC - V Output Current IOUT 0 200 mA *2 For output voltage, refer to the dropout voltage corresponding to the output current. Key LDO Performance Parameters 1. The total current drawn from the supply is the sum of the load current plus the ground pin current. It is defined by I Q = IIN - IOUT under no load condition (IOUT = 0mA). Efficiency vs. Output Current (VOUT = 1.8 V, VIN = 3.6 V) Figure 9. The quiescent current of the ADP160 LDO is nearly constant as the input voltage varies between 2 V and 5.5 V, as shown in Figure 3. Both quiescent current and dropout voltage contribute to the efficiency curve and an LDO. Quiescent, or ground current, is the difference between input and output currents. Supply voltage rejection vs. frequency Figure 13. It offers very low quiescent current and extends battery-life of Thermal shutdown (Output voltage vs. Efficiency vs. Output Current (VOUT = 0.9 V, VIN = 3.6 V) Figure 10. It seems to bottom out around 15V, but this is the current and not the power. Ordering Information. Quiescent current vs. supply voltage Figure 11. So, for example, if Iq = 1mA and Iout = 3mA, then Is+ = 4mA and Is- = 1mA; if Iq = 1mA and Iout = -3mA then Is+ = 1mA and Is- = 4mA. The current consumed in the state is commonly called Iddq for Idd (quiescent) and hence the name. Power dissipation vs. output power (RL= 4 Ω) TDA7296 Typical characteristics DS0179 - Rev 11 page 9/23. This is the current that electronic equipment draws when it is off but has some standby power supplying the sense circuits such as the PS On power in a computer power supply. where Is+ is the current into the + supply terminal, Is- is the current out of the - supply terminal, Iq is the quiescent current specified in the datasheet, and Iout is the current flowing out of the output. Typ. Input Voltage VOUT = 1.2V IOUT = 100µA COUT = 0.47µF. high input supply voltages. Input Voltage Fig. They can be confused from time to time. INPUT VOLTAGE (V) Ground Pin Current vs. There is no load, no input signal and the output is linked on the negative input for each opamp. Quiescent Current vs. Shutdown Current There have been a lot of questions raised on the difference between quiescent and shutdown current. ELECTRICAL CHARACTERISTICS (Refer to the Test Circuit, VS = ±18V, Tamb = 25°C, f = 1 kHz; un- less otherwise specified) Symbol Parameter Test Condition Min. Shutdown Current vs. Supply Voltage Figure 8. Temperature Fig. current while consuming only 1.6 µA of quiescent current (typical). Mute attenuation vs… Ultra Low Quiescent Current LDO Regulator BD7xxL5FP-C ... Total supply current vs. Load Figure 22. Micrel, Inc. MIC5232 June 2012 2 M9999-061812-C … Quiescent current is only 60µA, which permits connecting the power supply to either side of 7 - Off Supply Current vs. Figure 3. When compared to a low quiescent current Voltage Regulator the benefits are even more evident and this will be especially useful for applications like Water and Gas Meters where long battery life has to be guaranteed by the designer. Figure 14. Quiescent Current and Power vs Voltage. Impact of Quiescent Current When a power supply is in standby mode, power consumption is defined by quiescent current (I Q), which refers to a circuit’s quiet state, when it isn’t driving any load and its inputs aren’t cycling. The device is stable with a ceramic capacitor on the output. The voltage supply is 5.3V, common voltage at 2.5V. Standby attenuation vs. Vpin9 Figure 12. Part Number Package Fig. Note 6. Quiescent current vs. input voltage of the ADP160 LDO. Max. Regulation is measured at constant junction temperature by using a 20ms current pulse. The input current drawn by a power supply when shut down by a control input (remote inhibit) or under no load. A 1µF or greater can be used as an output capacitor. Current, quiescent 6 10 mA Power Dissipation, quiescent 200V supply 1.2 2 W Parameter Test Conditions Min Typ Max Units Resistance, AC, junction to case F>60 Hz 1 °C/W Resistance, DC, junction to case F<60 Hz 1.25 °C/W Resistance, junction to air Full temperature range 13 °C/W Temperature Range, case Meet full range specs -40 +85 °C On the datasheet page 5, the typical quiescent current is 2.8mA per amplifier for Vs=5V On my circuit, I measured the quiescent current = 3.48mA with Vs=5.3V. There have been a lot of questions raised on the difference between quiescent and shutdown current. The quiescent current of the converter seems to hover around 0.3mA with a slight dependence on voltage. Dropout Voltage By comparison, the MOSFET pass element uses voltage driven on the isolated gate to make its quiescent current significantly lower than the transistor-based regulator. 250mA Low Quiescent Current CMOS LDO DESCRIPTION TS9011 is a positive voltage regulator developed utilizing CMOS technology featured very low power consumption, low dropout voltage and high output voltage accuracy. current with an input voltage range from 1.5 V to 5.5 V and a typical dropout voltage of 112 mV. 5 - Quiescent Current vs. Quiescent Current vs. • Short circuit current limit: This is the current drawn when the output voltage is … 6 - Reverse Blocking Current vs. to the output current. This directly impacts the transistor-based regulator’s quiescent current. Temperature Figure 7. Quiescent Current 0.5μA Output Current 200mA 50mA PFM Switching Current 330mA 180mA ON Resistance P-Ch 0.5 (typ) Input common-mode and power-supply voltages are inde-pendent and can range from 2.7V to 40V for the INA139 and 2.7V to 60V for the INA169. The input operating range is specified from 2.3V to 6.0V, making it an ideal choice for two and three primary cell battery-powered applications, as well as single cell Li-Ion-powered applications. Iddq testing uses the principle that in a correctly operating quiescent CMOS digital circuit , there is no static current path between the power supply and ground, except for a … 14-SOP . 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