HT7027A-2 Datasheet | Holtek Semiconductor

Low Power Voltage Detector HT70xx A-2 Revision: V1.71 Date: December 04, 2025 HT70xx A-2 Low Power Voltage Detector Features - Low power consumption - Low temperature coefficient - High input voltage range (up to 30V) - Quiescent current 2.5μA - Output voltage accuracy: tolerance ±1% - Built-in hysteresis characteristic - 3-pin SOT89 and 5-pin SOT23 packages Applications - Battery checkers - Level selectors - Power failure detectors - Microputer reset - Battery memory backup - Non-volatile RAM signal storage protectors General Description The HT70xx A-2 series devices area set of three terminal low power voltage detectors implemented in CMOS technology. Each voltage detector in the series detects a particular fixed voltage ranging from 2.2V to 8.2V. The voltage detectors consist of a high-precision and low power consumption standard voltage source as well as a parator, hysteresis circuit, and an output driver. CMOS technology ensures low power consumption. Although designed primarily as fixed voltage detectors, these devices can be used with external ponents to detect user specified threshold voltages. Selection Table Part No. HT7022A-2 HT7024A-2 HT7027A-2 HT7033A-2 HT7039A-2 HT7044A-2 HT7050A-2 HT7082A-2 Detectable Voltage 2.2V 2.4V 2.7V 3.3V 3.9V 4.4V 5.0V 8.2V Hysteresis Width 0.110V 0.120V 0.135V 0.165V 0.195V 0.220V 0.250V 0.410V Tolerance ±1% Note: ″xx″ stands for detectable voltages. Package...