Overview
The MC34063ADG4 is a versatile and highly integrated switching regulator from Texas Instruments, designed to support a wide range of power conversion topologies including boost, buck, and inverting configurations. This device is part of the MC34063A series, characterized for operation from 0°C to 70°C, making it suitable for various applications requiring reliable and efficient power management. The MC34063ADG4 features a high-current output switch, an internal oscillator, and a precision internal reference, allowing for minimal external component requirements.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 3 | - | 40 | V |
| Operating Temperature Range | 0 | - | 70 | °C |
| Oscillator Frequency | 24 | 33 | 42 | kHz |
| Output Switch Current | - | - | 1.5 | A |
| Switch Collector to Emitter Voltage | - | - | 40 | V |
| Switch Saturation Voltage (Darlington Connection) | 1 | 1.3 | - | V |
| Supply Current | - | - | 4 | mA |
| Current-Limit Sense Voltage | 250 | 300 | 350 | mV |
Key Features
- Wide Input Voltage Range: 3 V to 40 V
- High Output Switch Current: Up to 1.5 A
- Adjustable Output Voltage: Allows for flexible output voltage settings
- Oscillator Frequency Up to 100 kHz: Supports high-frequency switching applications
- Precision Internal Reference: 2% accuracy
- Short-Circuit Current Limiting: Protects against overcurrent conditions
- Low Standby Current: Minimizes power consumption in standby mode
Applications
- Portable Devices: Suitable for battery-powered devices due to its low standby current and high efficiency
- Telecommunications: Used in various telecom equipment for reliable power conversion
- Consumer & Computing: Found in consumer electronics and computing devices requiring efficient power management
- Test & Measurement: Used in test and measurement equipment for stable power supply
- HMIs (Human Machine Interfaces): Applied in HMIs for reliable and efficient power conversion
Q & A
- What is the operating temperature range of the MC34063ADG4?
The MC34063ADG4 operates from 0°C to 70°C. - What is the maximum output switch current of the MC34063ADG4?
The maximum output switch current is up to 1.5 A. - What is the typical oscillator frequency of the MC34063ADG4?
The typical oscillator frequency is around 33 kHz. - Does the MC34063ADG4 have short-circuit current limiting?
Yes, it has built-in short-circuit current limiting. - What is the precision of the internal reference voltage?
The internal reference voltage has a precision of 2%. - What are the common applications of the MC34063ADG4?
Common applications include portable devices, telecommunications, consumer & computing, test & measurement, and HMIs. - What is the recommended input decoupling capacitor value?
A 1000-µF decoupling capacitor is recommended on the input. - How does the MC34063ADG4 support different power conversion topologies?
The device supports boost, buck, and inverting topologies with minimal external components. - What is the typical supply current of the MC34063ADG4?
The typical supply current is up to 4 mA. - What is the current-limit sense voltage range of the MC34063ADG4?
The current-limit sense voltage range is from 250 mV to 350 mV.
