Datasheet HT7727FA, HT7730FA, HT7733FA, HT7737FA, HT7750FA (Holtek)
| Fabricante | Holtek |
| Descripción | TinyPower TM 200mA Synchronous Step-up Converter |
| Páginas / Página | 26 / 1 — HT77xxFA. TinyPowerTM 200mA. Synchronous Step-up Converter. Features. … |
| Formato / tamaño de archivo | PDF / 9.0 Mb |
| Idioma del documento | Inglés |
HT77xxFA. TinyPowerTM 200mA. Synchronous Step-up Converter. Features. General Description. Applications. Selection Table. Part No
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HT77xxFA TinyPowerTM 200mA Synchronous Step-up Converter Features General Description
• Ultra low supply current : 4μA The HT77xxFA series is a set of synchronous step-up • Low ripple and low noise DC/DC converters with high efficiency. The series • High efficiency up to 95% devices have the advantage of extremely low start-up voltage, which is suitable for 1-cell Alkaline battery • Fixed output voltage: 2.7V, 3.0V, 3.3V, 3.7V, 5.0V applications. Being manufactured using CMOS • High output voltage accuracy: ±2% technology ensures ultra low supply current to extend • Output current: power endurance for portable products. The devices Up to 200mA @ 0.6×V require only three external components to provide a OUT≤VIN≤VOUT fixed output voltage of 2.7V, 3.0V, 3.3V, 3.7V or 5.0V. • Low shutdown current: 0.1μA (Typ.) • Package types: 3-pin SOT89, 3-pin SOT23 and In order to save PCB layout area, these devices are 5-pin SOT23 using synchronous topology integrated schottky diode, and also using 3-pin SOT89, 3-pin SOT23 and 5-pin SOT23 packages. For 5-pin SOT23 package
Applications
type, it also includes an internal chip enable function to reduce power consumption in the shutdown mode. • Palmtops/PDAs • Portable communicators/Smartphones • Cameras/Camcorders • Battery-powered equipment: Remote Control, Wireless Mouse, blood glucose meter, electric clipper and thermometer
Selection Table Part No. Output Voltage Packages Markings
HT7727FA 2.7V HT7730FA 3.0V SOT89 HT7733FA 3.3V SOT23 HT7xxFA marking for SOT89 type SOT23-5 xxFA marking for SOT23 and SOT23-5 types HT7737FA 3.7V HT7750FA 5.0V Note: “xx” stands for output voltages.
Typical Application Circuits
VIN LX OUT VOUT L1 10μH
HT77xxFA
C1 C2 10μF OFF ON 10μF CE GND Rev. 1.21 1 July 08, 2022 Rev. 1.00 PB July 08, 2022 Document Outline Features Applications General Description Selection Table Typical Application Circuits Block Diagram Pin Assignment Pin Description Absolute Maximum Ratings Recommended Operating Ratings Electrical Characteristics Typical Performance Characteristics Functional Description Low Voltage Start-up Shutdown Power on Component Selection Power Inductor Input Capacitor Output Capacitor PCB Layout Suggestion Thermal Consideration Application Circuits Without CE Pin Application Circuit With CE Pin Application Circuit VIN Quick On/Off Power Supply with Low Load Ability Package Information 3-pin SOT23 Outline Dimensions 3-pin SOT89 Outline Dimensions 5-pin SOT23 Outline Dimensions
• Ultra low supply current : 4μA The HT77xxFA series is a set of synchronous step-up • Low ripple and low noise DC/DC converters with high efficiency. The series • High efficiency up to 95% devices have the advantage of extremely low start-up voltage, which is suitable for 1-cell Alkaline battery • Fixed output voltage: 2.7V, 3.0V, 3.3V, 3.7V, 5.0V applications. Being manufactured using CMOS • High output voltage accuracy: ±2% technology ensures ultra low supply current to extend • Output current: power endurance for portable products. The devices Up to 200mA @ 0.6×V require only three external components to provide a OUT≤VIN≤VOUT fixed output voltage of 2.7V, 3.0V, 3.3V, 3.7V or 5.0V. • Low shutdown current: 0.1μA (Typ.) • Package types: 3-pin SOT89, 3-pin SOT23 and In order to save PCB layout area, these devices are 5-pin SOT23 using synchronous topology integrated schottky diode, and also using 3-pin SOT89, 3-pin SOT23 and 5-pin SOT23 packages. For 5-pin SOT23 package
Applications
type, it also includes an internal chip enable function to reduce power consumption in the shutdown mode. • Palmtops/PDAs • Portable communicators/Smartphones • Cameras/Camcorders • Battery-powered equipment: Remote Control, Wireless Mouse, blood glucose meter, electric clipper and thermometer
Selection Table Part No. Output Voltage Packages Markings
HT7727FA 2.7V HT7730FA 3.0V SOT89 HT7733FA 3.3V SOT23 HT7xxFA marking for SOT89 type SOT23-5 xxFA marking for SOT23 and SOT23-5 types HT7737FA 3.7V HT7750FA 5.0V Note: “xx” stands for output voltages.
Typical Application Circuits
VIN LX OUT VOUT L1 10μH
HT77xxFA
C1 C2 10μF OFF ON 10μF CE GND Rev. 1.21 1 July 08, 2022 Rev. 1.00 PB July 08, 2022 Document Outline Features Applications General Description Selection Table Typical Application Circuits Block Diagram Pin Assignment Pin Description Absolute Maximum Ratings Recommended Operating Ratings Electrical Characteristics Typical Performance Characteristics Functional Description Low Voltage Start-up Shutdown Power on Component Selection Power Inductor Input Capacitor Output Capacitor PCB Layout Suggestion Thermal Consideration Application Circuits Without CE Pin Application Circuit With CE Pin Application Circuit VIN Quick On/Off Power Supply with Low Load Ability Package Information 3-pin SOT23 Outline Dimensions 3-pin SOT89 Outline Dimensions 5-pin SOT23 Outline Dimensions