DM0365R Datasheet – Green Mode Fairchild Switch (FSDM0365R)
Green Mode Fairchild Power Switch
DM0365R overview
The DM0365R is a Green Mode Fairchild Power Switch made by Fairchild Semiconductor, supplied in these packages: DIP 8, SOP 8 Pin Type. The absolute maximum ratings table on this page lists the 10 limits from the manufacturer's datasheet that must not be exceeded. This page brings together the DM0365R pinout and maximum ratings, with the full datasheet PDF to preview below or download.
The FSDM0x65RNB of integrated Pulse Width Modulator (PWM) and SENSEFETÒ are specifically designed for high performance offline Switch Mode Power Supplies (SMPS) with minimal external components. This devices is an integrated high voltage power switching regulator which combines an avalanche rugged SENSEFET with a current mode PWM control block. The integrated PWM controller features include: a fixed oscillator with frequency modulation for reduced EMI, Under Voltage Lock Out (UVLO) protection, Leading Edge Blanking (LEB), an optimized gate turn−on/turn−off driver, Thermal Shut Down (TSD) protection and temperature compensated precision platform that is well suited for the design of cost−effective flyback converters. current sources for loop compensation and fault protection circuitry. The FSDM0x65RNB offers better performance in Soft Start than FSDM0265RN. When compared to a discrete MOSFET and controller or RCC switching converter solution, the FSDM0x65RNB reduces total component count, design size, weight while increasing efficiency, productivity and system reliability. This device
Datasheet
DM0365R features
- Internal Avalanche Rugged SENSEFET
- Consumes only 0.65 W at 240 VAC & 0.3 W load with Advanced Burst−Mode Operation
- Frequency Modulation for EMI Reduction
- Precision Fixed Operating Frequency
- Internal Start−up Circuit
- Pulse−by−Pulse Current Limiting
- Over Voltage Protection (OVP)
- Over Load Protection (OLP)
- Internal Thermal Shutdown Function (TSD)
- Auto−Restart Mode
- Under Voltage Lockout (UVLO)
- Low Operating Current (3 mA)
- Adjustable Peak Current Limit
- Built−in Soft Start
DM0365R pinout
| Pin | Name | Description |
|---|---|---|
| 1 | GND | SENSEFET source terminal on primary side and internal control ground. |
| 2 | Vcc | Positive supply voltage input. Although connected to an auxiliary transformer winding, current is supplied from pin 5 (Vstr) via an internal switch during startup (see Internal Block Diagram section). It is not until Vcc reaches the UVLO upper threshold (12 V) that the internal start−up switch opens |
| 3 | Vfb | The feedback voltage pin is the non−inverting input to the PWM comparator. It has a 0.9mA current source connected internally while a capacitor and optocoupler are typically connected externally. A feedback voltage of 6V triggers over load protection (OLP). There is a time delay while charging exter |
| 4 | Ipk | This pin adjusts the peak current limit of the SENSEFET. The feedback 0.9 mA current source is diverted to the parallel combination of an internal 2.8kW resistor and any external resistor to GND on this pin to deter- mine the peak current limit. If this pin is tied to Vcc or left floating, the typic |
| 5 | Vstr | This pin connects directly to the rectified AC line voltage source. At start up the internal switch supplies inter- nal bias and charges an external storage capacitor placed between the Vcc pin and ground. Once the Vcc reaches 12 V, the internal switch is opened. |
| 6 | Drain | The drain pins are designed to connect directly to the primary lead of the transformer and are capable of switching a maximum of 650V. Minimizing the length of the trace connecting these pins to the transformer will decrease leakage inductance. |
Absolute maximum ratings
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Drain Pin Voltage | VDRAIN | 650 | V |
| Vstr Pin Voltage | VSTR | 650 | V |
| Drain Current Pulsed (Note FDSM0265RNB FDSM0365RNB | IDM | 8.0 12 | A |
| Single Pulse Avalanche Energy (Note) FDSM0265RNB FDSM0365RNB | EAS | 68 127 | mJ |
| Supply Voltage | VCC | 20 | V |
| Feedback Voltage Range | VFB | −0.3 to VCC | V |
| Total Power Dissipation | PD | 1.56 | W |
| Operating Junction Temperature | TJ | Internally limited | °C |
| Operating Ambient Temperature | TA | −25 to +85 | °C |
| Storage Temperature | TSTG | −55 to +150 | °C |
DM0365R applications
- SMPS for VCR, SVR, STB, DVD & DVCD
- SMPS for Printer, Facsimile & Scanner
- Adapter for Camcorder
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