Overview
The NCP1011ST100T3G is a part of the NCP101X series from onsemi, designed as a self-supplied monolithic switcher for low standby power offline Switch-Mode Power Supplies (SMPS). This integrated circuit combines a fixed-frequency current-mode controller with a 700 V MOSFET, making it a comprehensive solution for building rugged and low-cost power supplies. The component is available in PDIP-7 or SOT-223 packages and features advanced protection mechanisms, low noise operation, and dynamic self-supply capabilities, eliminating the need for an auxiliary winding.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOT-223 | - |
| MOSFET Voltage Rating | 700 | V |
| Typical RDSon | 11 | Ω |
| Peak Current Setpoint | 250 | mA |
| Operating Frequency | 100 | kHz |
| Internal Soft-Start Time | 1.0 | ms |
| Temperature Shutdown | 150 | °C |
| Maximum Junction Temperature | 150 | °C |
| Storage Temperature Range | -60 to +150 | °C |
Key Features
- Integrated 700 V MOSFET with low RDSon (11 Ω typical)
- Current-mode fixed-frequency operation (100 kHz for NCP1011ST100T3G)
- Skip-cycle operation at low peak currents to eliminate acoustic noise
- Dynamic Self-Supply (DSS) - no need for an auxiliary winding
- Internal 1.0 ms soft-start
- Latched overvoltage protection with auxiliary winding operation
- Frequency jittering for improved EMI signature
- Auto-recovery internal output short-circuit protection
- Below 100 mW standby power if auxiliary winding is used
- Internal temperature shutdown
- Direct optocoupler connection
- SPICE models available for transient analysis
- Pb-free and halide-free device
Applications
- Low power AC/DC adapters for chargers
- Auxiliary power supplies for USB, appliances, TVs, etc.
Q & A
- What is the NCP1011ST100T3G used for?
The NCP1011ST100T3G is used for building low standby power offline Switch-Mode Power Supplies (SMPS).
- What package types are available for the NCP101X series?
The NCP101X series is available in PDIP-7 and SOT-223 packages.
- What is the typical RDSon of the MOSFET in the NCP1011ST100T3G?
The typical RDSon of the MOSFET is 11 Ω.
- What is the operating frequency of the NCP1011ST100T3G?
The operating frequency is 100 kHz.
- Does the NCP1011ST100T3G require an auxiliary winding?
No, it features Dynamic Self-Supply (DSS), eliminating the need for an auxiliary winding.
- What is the internal soft-start time of the NCP1011ST100T3G?
The internal soft-start time is 1.0 ms.
- What protection mechanisms are included in the NCP1011ST100T3G?
The device includes overvoltage protection, short-circuit protection, and temperature shutdown.
- What is the maximum junction temperature of the NCP1011ST100T3G?
The maximum junction temperature is 150 °C.
- Is the NCP1011ST100T3G Pb-free and halide-free?
- What are some typical applications of the NCP1011ST100T3G?
Typical applications include low power AC/DC adapters for chargers and auxiliary power supplies for USB, appliances, and TVs.
