HT7722

HOLTEK Semiconductor Inc.
HT77xx PFM Asynchronous Step-up DC to DC Converter (100mA) Features · Low start-up voltage: 0.7V (Typ.), 0.9V (Max.) · Ultra low supply current IDD2: 4mA (Typ.) · High efficiency: 85% (Typ.), VOUT³2.7V · Low ripple and low noise · High output voltage accuracy: ±2.5% · Low shutdown current: 0.5mA (Typ.) · Output voltage: 1.8V, 2.2V, 2.7V, 3.0V, 3.3V, 3.7V, · 3-pin SOT89, 3-pin SOT23 and ...
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Технические характеристики

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Корпус SOT-23-5
Режим преобразования
Входное напряжение
Выходное напряжение
Кол-во выходов
Ток собственного потребления
Встроенные возможности
Рабочая температура
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HT77xx PFM Asynchronous Step-up DC to DC Converter (100mA) Features · Low start-up voltage: 0.7V (Typ.), 0.9V (Max.) · Ultra low supply current IDD2: 4mA (Typ.) · High efficiency: 85% (Typ.), VOUT³2.7V · Low ripple and low noise · High output voltage accuracy: ±2.5% · Low shutdown current: 0.5mA (Typ.) · Output voltage: 1.8V, 2.2V, 2.7V, 3.0V, 3.3V, 3.7V, · 3-pin SOT89, 3-pin SOT23 and 5.0V 5-pin SOT23 package · Output current up to 100mA Applications · Palmtops/PDAs · Cameras/Camcorders · Portable communicators/Smartphones · Battery-powered equipment General Description The HT77xx consists of an oscillator, a PFM control circuit, a driver transistor, a reference voltage unit, and a high speed comparator. They employ pulse frequency modulation (PFM) for minimum supply current and ripple at light output loading. These devices are available in space saving 3-pin SOT89, 3-pin SOT23 and 5-pin SOT23 packages. For 5-pin SOT23 package, it also build-in a chip enable function to reduce power consumption during shutdown mode. The HT77xx series is a set of PFM step-up DC/DC converter with high efficiency and low ripple. The series features extremely low start-up voltage and high output voltage accuracy. They require only three external components to provide a fixed output voltage of 1.8V, 2.2V, 2.7V, 3.0V, 3.3V, 3.7V or 5.0V. CMOS technology ensures ultra low supply current and makes them ideal for battery-operated applications powered from one or more cells. Selection Table Note: Part No. Output Voltage HT7718 1.8V HT7722 2.2V HT7727 2.7V HT7730 3.0V HT7733 3.3V HT7737 3.7V HT7750 5.0V Package Marking SOT89 SOT23 SOT23-5 HT77xx (for SOT89) 77xx (for SOT23) 77xx (for SOT23-5) ²XX² stands for output voltages. Rev 2.21 1 January 4, 2021 PDF
Документация на HT7730 

Z:\Power Management\HT77xx\HT77xxv220--20200924.vp

Дата модификации: 04.01.2021

Размер: 747.2 Кб

15 стр.

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