The HT77XXA 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 2.7V, 3.0V, 3.3V or 5.0V. CMOS technology ensures ultra low supply current and makes them ideal fo.
· Low start-up voltage: 0.7V (Typ.)
· High efficiency: 85% (Typ.)
· High output voltage accuracy: ±2.5%
· Output voltage: 2.7V, 3.0V, 3.3V, 5.0V
· Ultra low supply current IDD: 5mA (Typ.)
· Low ripple and low noise
· Low shutdown current: 0.5mA (Typ.)
· TO-92, SOT-89, SOT-23 and SOT-25 package
Applications
· Palmtops/PDAs
· Portable communicators/Smartphones
· Cameras/Camcorders
· Battery-powered equipment
General Description
The HT77XXA 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 vol.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | HT7727 |
Holtek Semiconductor |
PFM Step-up DC/DC Converter | |
2 | HT7727BA |
Holtek Semiconductor |
5V/200mA PFM Asynchronous Step-up Converter | |
3 | HT7727S |
Holtek Semiconductor |
100mA PFM Synchronous Step-up DC/DC Converter | |
4 | HT7727SA |
Holtek Semiconductor |
200mA PFM Synchronous Step-up DC/DC Converter | |
5 | HT772 |
Hi-Sincerity Mocroelectronics |
PNP EPITAXIAL PLANAR TRANSISTOR | |
6 | HT7722S |
Holtek Semiconductor |
100mA PFM Synchronous Step-up DC/DC Converter | |
7 | HT7700 |
Holtek Semiconductor Inc |
Key & Touch Linear Dimmer | |
8 | HT7700A |
Holtek Semiconductor Inc |
Key & Touch Linear Dimmer | |
9 | HT7700B |
Holtek Semiconductor Inc |
Key & Touch Linear Dimmer | |
10 | HT7700C |
Holtek Semiconductor Inc |
Key & Touch Linear Dimmer | |
11 | HT7700D |
Holtek Semiconductor Inc |
Key & Touch Linear Dimmer | |
12 | HT7712B |
Holtek Semiconductor |
Touch Dimmer |