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30-V, 1A, 500KHz current mode PWM controller with 16V/10V UVLO 50% duty cycle, 0°C to 70°C
DIP8Manufacturer:
Mfr.Part #:
UC3844AN
Datasheet:
Series: UC3844A
Output Type:
Transistor Driver
Function:
Step-Up, Step-Down, Step-Up/Step-Down
Output Configuration:
Positive, Isolation Capable
EDA/CAD Models:
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The UC3844AN is a PWM controller IC from Texas Instruments, designed for use in power supply circuits such as offline and DC-DC converters, battery chargers, and LED drivers. It features optimized performance for these applications, including low start-up current, trimmed oscillator discharge current, automatic feedforward compensation, and pulse-by-pulse current limiting. The device also offers enhanced load response characteristics, undervoltage lockout with hysteresis, double pulse suppression, and a high-current totem pole output. With its internally-trimmed bandgap reference and ability to operate up to 500 kHz, the UC3844AN is suitable for various power management applications in industrial, automotive, and consumer electronics.
The UC3844AN features include:
These features make it suitable for various power supply applications, including offline and DC-DC converters, battery chargers, and LED drivers.
The package type of UC3844AN is DIP8 (Dual In-Line Package, 8 pins).
The UC3844AN has a DIP8 package with the following pins: 1. VCC: Positive supply voltage 2. GND: Ground 3. OUT: Output pin for the PWM signal 4. COMP: Compensation pin for the error amplifier 5. FB: Feedback input pin for the error amplifier 6. TRIM: Trim pin for the oscillator discharge current 7. DIS: Discharge pin for the oscillator 8. NC: No connect (not connected) The UC3844AN is a PWM controller IC designed to regulate voltage and current in power supply circuits. It has an internally trimmed bandgap reference, automatic feedforward compensation, and pulse-by-pulse current limiting, making it suitable for various power management applications.
The manufacturer of the UC3844AN is Texas Instruments (TI), a leading American technology company that designs, manufactures, and sells semiconductors and other electronic components. TI is a global leader in the development and manufacturing of analog and embedded processing technologies. The company was founded in 1930 and is headquartered in Dallas, Texas.
According to the product description, the application areas of UC3844AN include:
Additionally, its versatile design makes it suitable for various power supply needs in industrial, automotive, and consumer electronics.
Based on the features and applications of UC3844A, some equivalent products could be:
These ICs are also PWM controllers, optimized for off-line and DC-DC converters, with similar features like low start-up current, oscillator discharge current, and undervoltage lockout.
Category | Integrated Circuits (ICs)Power Management (PMIC)DC DC Switching Controllers | Output Type | Transistor Driver |
Function | Step-Up, Step-Down, Step-Up/Step-Down | Output Configuration | Positive, Isolation Capable |
Topology | Boost, Buck, Flyback, Forward | Number of Outputs | 1 |
Output Phases | 1 | Voltage - Supply (Vcc/Vdd) | 10V ~ 30V |
Frequency - Switching | Up to 500kHz | Duty Cycle (Max) | 48% |
Synchronous Rectifier | No | Clock Sync | No |
Serial Interfaces | - | Control Features | Frequency Control |
Operating Temperature | 0°C ~ 70°C (TA) | Mounting Type | Through Hole |
Base Product Number | UC3844 | Package/Case | DIP8 |
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Qty. | Unit Price | Ext. Price |
---|---|---|
1000+ | $0.555 | $555.00 |
500+ | $0.573 | $286.50 |
100+ | $0.617 | $61.70 |
30+ | $0.803 | $24.09 |
10+ | $0.890 | $8.90 |
1+ | $1.047 | $1.05 |
The prices above are for reference only.
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