Overview
The UC3844BD1R2 is a high-performance integrated circuit designed primarily for switching power supply applications. It is part of the UC384x series from onsemi, which comprises a range of voltage-mode PWM (Pulse Width Modulation) controllers suitable for various power management solutions. This IC is known for its efficiency and reliability in DC-DC converter applications, providing excellent performance while minimizing power losses. The UC3844BD1R2 features a built-in voltage reference, error amplifier, and oscillator, which allow for easy regulation of output voltage and current.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 10V to 36V |
| Supply Current-Max | 17mA |
| Frequency-Max | Up to 500kHz |
| Topology | Flyback, Boost |
| Duty Cycle-Min | 0% |
| Duty Cycle-Max | 50% |
| Operating Temperature Range | 0°C to 70°C |
| Storage Temperature Range | -65°C to +150°C |
| Output Current | -1mA |
| Thermal Resistance | 178°C/W |
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
Key Features
- Input voltage range: 10V to 36V
- Output frequency: Up to 500kHz
- Low start-up current: 0.5 mA
- Peak current limit: Internally set, adjustable via an external resistor
- Built-in soft start function
- TTL compatible output stage
- Temperature range: 0°C to 70°C
- Compact 8-pin SOIC package
- Protective features including input and reference undervoltage lockouts, cycle-by-cycle current limiting, and a latch for single pulse metering
Applications
- Off-line power supplies
- DC-DC converters
- AC to DC converters
- LED drivers
- Battery chargers
- Power factor correction circuits
- Flyback converters
Q & A
- What is the maximum input voltage for the UC3844BD1R2?
The maximum input voltage for the UC3844BD1R2 is 36V.
- Can this IC be used for battery charger applications?
- What is the typical operating frequency for this IC?
The typical operating frequency can go up to 500kHz, depending on the external component configuration.
- Does UC3844BD1R2 have a built-in soft start feature?
- Can I use this IC for LED driving applications?
- What is the operating temperature range of the UC3844BD1R2?
- What is the package type of the UC3844BD1R2?
- Does the UC3844BD1R2 have protective features?
- Can the UC3844BD1R2 be used in flyback converter applications?
- What is the thermal resistance of the UC3844BD1R2?
