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Product Detailed Parameters
- Description：IC OFFLINE SWITCH 8SOIC
- Series：VIPER™
- Mfr：STMicroelectronics
- Package：Tube
- Output Isolation：Non-Isolated
- Internal Switch(s)：Yes
- Voltage - Breakdown：730V
- Topology：-
- Voltage - Start Up：14.5 V
- Voltage - Supply (Vcc/Vdd)：9V ~ 38V
- Duty Cycle：-
- Frequency - Switching：60kHz
- Fault Protection：Current Limiting, Over Temperature, Over Voltage
- Control Features：-
- Operating Temperature：-40°C ~ 150°C (TC)
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
- Power (Watts)：8 W
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Overview
The VIPER12AS-E is an AC/DC converter from the VIPerPlus family, designed as a low-power off-line switch-mode power supply primary switch. It integrates a high-voltage power MOSFET with a breakdown voltage of 730 V and a current-mode PWM controller. The device operates with a fixed switching frequency of 60 kHz and supports a maximum duty cycle of 16%. It functions within an input supply voltage range of 9 V to 38 V, drawing a typical operating supply current of 4.5 mA. The component is housed in an SOIC-8 surface-mount package and is rated for operation between -40°C and +150°C.
Feature Summary
- Integrates a 730 V rugged power MOSFET with a dedicated current-mode PWM controller for compact design.
- Features high-voltage startup capability that eliminates the need for external start-up resistors.
- Includes comprehensive protection mechanisms such as under-voltage lockout, over-current protection, and thermal shutdown.
Applications
- Battery chargers
- Wall adapters
- Standby power supplies for televisions and monitors
Procurement Notes
Verify the specific suffix against official STMicroelectronics documentation to confirm packaging type and environmental compliance status. Ensure the ordering code matches the required tape-and-reel or tube configuration. Confirm RoHS compliance details directly from the manufacturer's datasheet before finalizing procurement specifications.
Selection Notes
Select this component for applications requiring a simplified bill of materials due to integrated high-voltage switching and control logic. Consider the SOIC-8 package constraints for thermal management when designing for the upper limits of the specified temperature range. Validate that the target application falls within the supported low-power output capabilities defined by the manufacturer.
Part Context
This part belongs to the VIPer12A-E series, which consists of self-oscillating flyback converters. The VIPerPlus family is engineered to minimize external component count by combining power and control functions on a single monolithic chip. This integration facilitates the design of cost-effective and space-efficient power solutions for consumer electronics.
Replacement Considerations
Consult official STMicroelectronics substitution guides for verified alternatives. Cross-reference pinouts and electrical characteristics carefully when considering generic replacements to ensure functional compatibility.
