OB2273AMP

"OB2273AMP" is a power management integrated circuit (IC) designed for offline switch-mode power supplies (SMPS). It features a high-voltage startup, low standby power consumption, and robust protection functions like over-voltage (OVP), over-load (OLP), and over-temperature (OTP) protection.
Key characteristics:
- PWM Control: Uses pulse-width modulation for efficient power regulation.
- Low Standby Power: Optimized for energy-saving applications.
- Protections: Built-in safeguards enhance reliability.
- Wide Input Range: Suitable for universal AC input (e.g., 85–265VAC).
Commonly used in adapters, LED drivers, and auxiliary power supplies. For detailed specs, refer to the datasheet from the manufacturer (e.g., On-Bright).

The OB2273AMP is a PWM controller IC for power supplies. Equivalent alternatives include:
- OB2263 (similar specs, lower power)
- SG6848 (compatible pinout)
- LD7535 (alternative from Leadtrend)
- TNY278 (TinySwitch series, different topology)
- VIPer12A (STMicroelectronics, higher power handling)
Check datasheets for exact compatibility in your circuit.

The OB2273AMP is a high-performance current-mode PWM controller IC with the following key features:
- Wide Input Voltage Range: Supports 8V to 30V operation.
- Low Startup Current: <5μA, reducing standby power consumption.
- Current-Mode Control: Enhances transient response and loop stability.
- Adjustable Switching Frequency: Up to 130kHz for flexible design.
- Built-in Protections: Includes OVP (Over-Voltage Protection), OLP (Over-Load Protection), SCP (Short-Circuit Protection), and thermal shutdown.
- Green Mode Operation: Improves efficiency at light loads.
- Low Operating Current: ~3mA typical for energy efficiency.
- SOP-8 Package: Compact and suitable for space-constrained designs.
Ideal for AC/DC adapters, LED drivers, and auxiliary power supplies.

The OB2273AMP is an 8-pin PWM controller IC for offline flyback converters. Key functions per pin:
1. VCC (Pin 1): Power supply input.
2. GND (Pin 2): Ground.
3. FB (Pin 3): Feedback input for output voltage regulation.
4. CS (Pin 4): Current sense input for overcurrent protection.
5. RT/CT (Pin 5): Timing resistor/capacitor for oscillator frequency.
6. NC (Pin 6): No connection (reserved).
7. Gate (Pin 7): PWM output to drive MOSFET.
8. HV (Pin 8): High-voltage startup input.
It features built-in protections (overvoltage, overload, short-circuit) and operates in DCM/CCM modes.

The OB2273AMP is a power management IC manufactured by On-Bright Electronics, a semiconductor company specializing in high-performance analog and mixed-signal ICs.
On-Bright (founded in 1998, headquartered in Shanghai, China) focuses on power supply solutions, including AC/DC controllers, LED drivers, and battery management ICs. The company serves consumer electronics, industrial, and automotive markets, known for cost-effective and energy-efficient designs.
The OB2273AMP is a PWM controller for offline power supplies, commonly used in adapters, chargers, and SMPS applications.

The OB2273AMP is typically available in an SOP-8 (Small Outline Package with 8 pins) package. This compact surface-mount design is common for power management ICs, offering efficient thermal performance and space-saving benefits. For exact specifications, always refer to the manufacturer's datasheet.