Description
The HT73Lxx are a series of low dropout voltage regulators with an input voltage range from 2.3V to 6.6V. They are available in a range of fixed output voltages from 0.9V to 3.6V. When the CE pin input is low, a fast discharge path pulls the output voltage low via an internal pull-down resistor. An internal overcurrent protection circuit prevents the devices from damage even if their output was shorted to ground. An over-temperature protection circuit ensures the device junction temperature will not exceed a temperature of 150ºC.
Due to the device’s outstanding PSRR and low output noise performance features, they are suitable for use in powering RF applications such as sub-1GHz transceivers. Their ultra-small 4-pin DFN package type with their 0.4mm thickness makes the devices also suitable for space limited applications such as financial/credit cards or smart wearable products.
Features:
- 2.3V to 6.6V operating input voltage
- up to 250mA output current capability
- fixed output voltage range: 0.9V, 1.05V, 1.2V, 1.5V, 1.8V, 2.5V, 2.7V, 3.0V, 3.3V and 3.6V with ±2% accuracy
- ultra low input consumption current: 1.35μA (typical)
- stable with 1μF ceramic output capacitor
- fast output discharge to ground when shutdown
- soft-start function when powered on
- high PSRR: 75dB at 1kHz
- low output noise: 50μVRMS from 10Hz to 100kHz
- over current and over temperature protection features
- enable/disable function
Specification:
- max. input voltage: 6.6V
- output voltage: 2.7V
- max. output current: 250mA
- current consumption: 1.0μA
- chip enable: yes
- tolerance: ±2%
- protection: soft-start, OCP, OTP
- case: SOT23-5
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