VIPER53SP-E STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
VIPER53SP-E is a fixed-frequency off-line flyback converter controller from STMicroelectronics with integrated 800 V avalanche-rugged power MOSFET and current-mode PWM control. It delivers up to 2.3 A output current from a universal AC mains input in a 10-pin SOIC package. Available from stock worldwide with competitive pricing.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- OBSOLETE
- Datasheet
- VIPER53SP-E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.3296(MOQ 25)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of VIPER53SP-E?
- Integrated 800 V avalanche-rugged power MOSFET eliminates the need for a separate high-voltage switching transistor, reducing component count in offline flyback power supplies
- Fixed-frequency current-mode PWM control at a programmable switching frequency simplifies transformer design and EMI filter optimization for offline AC-DC converters
- Built-in protection features including overcurrent limiting, thermal shutdown, and soft-start enable robust 2.3 A output flyback designs without additional supervisory ICs
What is VIPER53SP-E used for?
VIPER53SP-E is designed for low-power offline AC-DC flyback power supplies in home appliances, industrial auxiliary power units, and set-top boxes where a compact 10-pin SOIC converter IC must derive an isolated DC output directly from universal mains input. Its integrated 800 V MOSFET and current-mode control reduce the external transformer design iterations and allow reliable operation across 85 V to 265 V AC input ranges for global power supply designs. The device also suits non-isolated buck flyback topologies in smart meter auxiliary rails and LED driver power stages requiring outputs up to 2.3 A.
What are the specifications of VIPER53SP-E?
| Factory Lead Time | 14Weeks |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Nom | 13V |
| JESD-30 Code | R-PDSO-G10 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 2.3A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP10,.55FL |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 250 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 300kHz |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Morocco |
Where can I find the VIPER53SP-E datasheet?
VIPER53SP-E Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for VIPER53SP-E?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum output current of VIPER53SP-E and what mains input voltage range does it support?
VIPER53SP-E is rated for a maximum output current of 2.3 A in flyback topology applications, derived from a universal AC mains input spanning 85 V to 265 V AC. The integrated 800 V MOSFET handles the peak voltage stress of full-wave rectified mains plus transformer leakage spikes without requiring an external high-voltage switching transistor.
How does VIPER53SP-E's integrated MOSFET affect the design compared to a standalone PWM controller?
By integrating an 800 V avalanche-rugged power MOSFET directly in the 10-pin SOIC package, VIPER53SP-E eliminates the external MOSFET, gate drive resistor, and gate drive transformer or buffer that a standalone PWM controller IC requires. This reduces the transformer primary-side component count by at least 3 parts and shrinks the high-voltage section of the PCB, which is critical for safety creepage-distance compliance in compact adapters.
What built-in protection does VIPER53SP-E provide to prevent damage during fault conditions?
VIPER53SP-E includes cycle-by-cycle peak current limiting that prevents transformer saturation, a thermal shutdown circuit that trips at approximately 135°C junction temperature, and soft-start logic that ramps the duty cycle gradually at power-up to limit inrush current to the output capacitors. These 3 integrated protection layers replace discrete overcurrent comparators and thermistor circuits typically needed in a discrete flyback design.
For a smart meter auxiliary power rail design, is VIPER53SP-E appropriate given a 14-week lead time?
VIPER53SP-E is well suited technically for a smart meter 5 V or 3.3 V auxiliary rail delivering up to 2.3 A from a 230 V AC meter bus, as it meets the low component count and compact 10-pin SOIC footprint requirements of meter PCBs. However, the 14-week factory lead time means procurement planning must begin at least 4 months before production, and designers should evaluate buffer stock levels or consider a pin-compatible alternative such as the VIPer22A or VIPER16 series for shorter-lead-time sourcing flexibility.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $4.7800 | $119.50 |
| 100+ | $4.5900 | $459.00 |
| 200+ | $4.5800 | $916.00 |
| 800+ | $4.3747 | $3499.76 |
| 1600+ | $4.3521 | $6963.44 |
| 3200+ | $4.3296 | $13854.72 |
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