VIPER37HE STMicroelectronics Integrated Circuit (Dual-In-Line Packages) In Stock
STMicroelectronics VIPER37HE is a fixed-frequency current-mode PWM controller IC for AC/DC flyback converters, supporting input voltages from 8.5 V to 23.5 V with an 800 V integrated power MOSFET rated at 30 mΩ on-resistance, operating up to 265 Vac. Available in DIP-10 package for isolated power supply designs.
- Manufacturer
- STMicroelectronics
- Package
- Dual-In-Line Packages
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- VIPER37HE Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8175(MOQ 100)
- Temp Range
- 25.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of VIPER37HE?
- Integrated 800 V, 30 mΩ power MOSFET eliminates external switch components in AC/DC flyback designs
- Fixed-frequency current-mode PWM control with input voltage range 8.5 V to 23.5 V (nominal 14 V)
- Supports universal mains input up to 265 Vac for global compliance in isolated SMPS applications
- Built-in protection features including overcurrent, overvoltage, and thermal shutdown for robust operation
What is VIPER37HE used for?
VIPER37HE is well-suited for low-power isolated AC/DC flyback power supplies in consumer electronics, home appliances, and industrial controls requiring compact offline switching regulators. Its integrated high-voltage MOSFET makes it ideal for auxiliary power supplies, chargers, and LED driver applications operating from universal mains input up to 265 Vac. The current-mode PWM architecture ensures stable regulation across varying load conditions in cost-sensitive, space-constrained designs.
What are the specifications of VIPER37HE?
| Factory Lead Time | 18Weeks |
| YTEOL | 6 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 23.5V |
| Input Voltage-Min | 8.5V |
| Input Voltage-Nom | 14V |
| JESD-30 Code | R-PDIP-T10 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SDIP10,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 3.5mA |
| Surface Mount | NO |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 127kHz |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 1.78mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mainland China |
Where can I find the VIPER37HE datasheet?
VIPER37HE Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for VIPER37HE?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum drain-source voltage of the integrated MOSFET in VIPER37HE?
The VIPER37HE integrates an 800 V rated MOSFET with 30 mΩ on-resistance, making it suitable for offline flyback converters operating from mains voltages up to 265 Vac without requiring an external power switch. This high breakdown voltage provides adequate margin for transformer leakage spike clamping in typical designs.
Which control topology does VIPER37HE use and how does it affect loop stability in flyback designs?
VIPER37HE uses fixed-frequency current-mode pulse width modulation (PWM) control. Current-mode control inherently provides cycle-by-cycle current limiting and improves transient response compared to voltage-mode designs, simplifying compensation in isolated flyback converters operating at input voltages between 8.5 V and 23.5 V auxiliary supply.
Can VIPER37HE be used in a universal mains adapter covering 100 Vac to 265 Vac input?
Yes. VIPER37HE is designed for offline operation up to 265 Vac, covering both 100 Vac (50/60 Hz) and 230 Vac mains standards. The integrated 800 V MOSFET provides sufficient voltage headroom, while the current-mode PWM controller maintains stable output regulation across the full input range with appropriate transformer and component selection.
What package does VIPER37HE use and how does its footprint influence PCB layout?
VIPER37HE uses a 10-lead DIP (R-PDIP-T10) package with 2.54 mm through-hole pin pitch, occupying roughly 13 mm × 7 mm of board area. The through-hole package provides strong mechanical anchoring and thermal coupling through the PCB, which benefits heat dissipation in low-cost flyback supplies without heatsink in applications up to the rated power level.
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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 |
|---|---|---|
| 100+ | $1.0600 | $106.00 |
| 500+ | $1.0200 | $510.00 |
| 750+ | $0.8900 | $667.50 |
| 1250+ | $0.8800 | $1100.00 |
| 2500+ | $0.8500 | $2125.00 |
| 8000+ | $0.8175 | $6540.24 |
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