TOP244P Off-Line Switching Power Converter IC PDIP-8B
TOP244P Off-Line Switching Power Converter IC PDIP-8B is an integrated offline switcher for efficient AC-DC SMPS applications.
40.00 EGP
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TOP244P Off-Line Switching Power Converter IC PDIP-8B is a high-performance offline switching power converter from the TOPSwitch-GX family. It integrates a high-voltage power MOSFET, PWM controller, fault protection, and control circuitry into a single device, reducing component count and simplifying power supply design. Designed for compact and energy-efficient AC-DC converters, the IC offers programmable current limiting, line sensing, soft-start, thermal shutdown, frequency jittering for EMI reduction, and excellent standby efficiency. It is widely used in switch-mode power supplies, industrial equipment, consumer electronics, adapters, and embedded power conversion applications.
Features
- Integrated high-voltage 700V power MOSFET and PWM controller.
- Built-in Eco Smart technology for low standby power consumption.
- Programmable current limit for flexible power supply design.
- Integrated soft-start minimizes startup stress and overshoot.
- Frequency jittering helps reduce EMI emissions.
- Automatic thermal shutdown with hysteretic recovery.
- Line under-voltage and over-voltage protection.
- Operates without dummy load at no-load conditions.
- Requires very few external components.
- PDIP-8B package for through-hole applications.
Specifications
| Parameter | Details |
|---|---|
| Product Type | Off-Line Switching Power Converter IC |
| Series | TOPSwitch-GX |
| Model | TOP244P |
| Package | PDIP-8B |
| Mounting Type | Through Hole |
| Breakdown Voltage | 700V(Min) |
| CONTROL Pin Voltage | 5.85V |
| Supply Current | 1.5mA |
| Switching Frequency | 132kHz(Internal, Fixed) |
| Maximum Duty Cycle | 78% |
| Current Limit (TOP244P/G) | 1.00A(Internal, di/dt=200mA/µs,25°C) |
| Current Limit (TOP244Y/R/F) | 1.35A(Internal, di/dt=270mA/µs,25°C) |
| ON-State Resistance (25°C) | 6.0Ω |
| ON-State Resistance (100°C) | 10.0Ω |
| Auto-Restart Upper Threshold | 5.8V |
| Auto-Restart Lower Threshold | 4.8V |
| Soft-Start Time | 10ms |
| PWM Gain | -23%/mA |
| Thermal Shutdown Temperature | 140°C |
| Thermal Shutdown Hysteresis | 75°C |
| Operating Junction Temperature | -40°Cto+150°C |
| Storage Temperature | -65°Cto+150°C |
Dimensions
Pinout:
| Pin Number | Pin Name | Function / Description |
|---|---|---|
| 1 | M (Multi-Function) | Multi-function pin used for line overvoltage protection, remote ON/OFF control, synchronization, and programmable current limit. |
| 2 | S (Source) | Source terminal of the internal power MOSFET. Primary-side ground reference. |
| 3 | S (Source) | Source terminal of the internal power MOSFET. Connected internally to Pin 2. |
| 4 | C (Control) | Control pin. Provides feedback input, error amplifier connection, and supply bypass capacitor connection. |
| 5 | D (Drain) | Drain terminal of the internal high-voltage power MOSFET. Connected to the primary winding of the transformer. |
| 6 | NC | No internal connection (Not Connected). |
| 7 | S (Source) | Source terminal of the internal power MOSFET. Connected internally to Pins 2 and 3. |
| 8 | S (Source) | Source terminal of the internal power MOSFET. Connected internally to Pins 2, 3, and 7. |
Applications
- AC-DC switch-mode power supplies.
- Power adapters and battery chargers.
- Industrial control power supplies.
- Consumer electronic power supplies.
- Home appliance power modules.
- Set-top boxes and networking equipment.
- LED driver power supplies.
- Embedded auxiliary power supplies.
- Instrumentation power supplies.
- Smart energy and IoT power systems.
Package Contents
- 1 x TOP244P Off-Line Switching Power Converter IC PDIP-8B