Holtek is delighted to announce the release of its new TinyPower ultra low quiescent current LDO series, the HT75Hxx. implemented in a CMOS technology. This new LDO series includes a high input voltage of 40 V, ultra-low quiescent current of 2.5 µA and a maximum output current value of 150 mA. With an output voltage accuracy of ±1.5%, this new HT75Hxx series also provide over current and over temperature protection features. They are available with several fixed output voltages ranging from 2.1 V to 5.0 V.
The soft start function controls the output slew rate to prevent the overshooting phenomenon when power on. These new devices include a chip enable pin, which when pulled low, will reduce the current consumption to 0.1 µA. The enable pin, CE, accepts CMOS level as logic input. When CE goes low, a fast discharging path pulls output voltage low a via 300 Ω resistor. The internally output over current protection prevents the HT75Hxx from being burned even if the output node shorts to ground. The over temperature protection ensures that the junction temperature will not exceed 150 °C.
The HT75Hxx devices provide a variety of package types including SOT89, SOT23-5 and 8SOP-EP.
The devices can be used in a diverse range of industrial and serial-battery applications which require a high input voltage such as smart meters, electric tools and sensors.
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