VIPER115HSTR STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
STMicroelectronics VIPER115HSTR is a current-mode PWM offline high-voltage switching regulator controller accepting 4.5 V to 30 V input with a 9 V nominal operating point in a compact SO-10 package. It integrates multiple protection features for energy-saving isolated flyback and forward converter designs. Available worldwide through authorized distributors.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- VIPER115HSTR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4696(MOQ 100)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of VIPER115HSTR?
- Current-mode PWM control with pulse-by-pulse current limiting for inherent short-circuit protection
- Wide input range of 4.5 V to 30 V (nominal 9 V) accommodates universal offline and auxiliary power rail designs
- Integrated high-voltage gate driver in SO-10 package reduces external component count for offline converters
- Energy-saving standby mode meets stringent international no-load power consumption regulations
What is VIPER115HSTR used for?
The VIPER115HSTR is designed for off-line switched-mode power supply (SMPS) designs including flyback and forward topologies used in consumer adapters, appliance auxiliary supplies, and industrial power modules. Its current-mode PWM control ensures fast transient response and cycle-by-cycle overload protection, making it suitable for safety-critical applications. The device is also used in smart metering, building automation, and set-top box power stages requiring high efficiency under light-load and standby conditions.
What are the specifications of VIPER115HSTR?
| Factory Lead Time | 18Weeks |
| YTEOL | 7 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 30V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 9V |
| JESD-30 Code | R-PDSO-G10 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Voltage-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP10,.24,40 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Supply Current-Max (Isup) | 1.8mA |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 132kHz |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 1mm |
| Terminal Position | DUAL |
| 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 | Mainland China |
Where can I find the VIPER115HSTR datasheet?
VIPER115HSTR Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for VIPER115HSTR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the VIPER115HSTR support and what is its nominal operating point?
The VIPER115HSTR accepts an input voltage range from 4.5 V minimum to 30 V maximum, with a nominal operating point of 9 V. This wide range allows it to work from auxiliary windings of offline flyback transformers or from low-voltage DC rails in industrial systems, covering a broad set of SMPS topologies without external level shifting.
How does current-mode PWM control in the VIPER115HSTR improve power supply reliability?
Current-mode PWM compares the sensed switch current on every switching cycle against a control threshold, limiting the peak current pulse by pulse. This provides inherent short-circuit protection — if output is shorted, the controller immediately reduces duty cycle within 1 switching cycle, preventing transformer saturation and protecting power MOSFETs rated for the 30 V input, without requiring slow external overcurrent circuits.
Which converter topologies can be built with the VIPER115HSTR for an offline 85–265 VAC application?
The VIPER115HSTR is specified for offline flyback and forward converter topologies. In a typical offline flyback design, the auxiliary winding supplies 9 V to the VDD pin, while the primary switch controls energy transfer. Output power levels of 5 W to 30 W are achievable with appropriate transformer design, covering charger, adapter, and standby supply applications from 85–265 VAC input.
What package does the VIPER115HSTR use, and how does it affect PCB layout for an offline power supply?
The VIPER115HSTR is housed in an SO-10 (SOIC-10) package with 1.27 mm pin pitch, which is a standard SMT footprint compatible with automated assembly lines. In an offline power supply layout, the 10-pin SOIC body keeps primary-side control circuitry compact, easing the required 6 mm creepage distance between primary and secondary copper areas on the PCB.
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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+ | $0.6600 | $66.00 |
| 250+ | $0.6200 | $155.00 |
| 500+ | $0.5900 | $295.00 |
| 2500+ | $0.4793 | $1198.25 |
| 10000+ | $0.4783 | $4782.70 |
| 20000+ | $0.4696 | $9391.60 |
In Stock · 24h Response · Worldwide Shipping
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