VIPER222LSTR STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
STMicroelectronics VIPER222LSTR is a current-mode PWM AC/DC switching regulator controller accepting 4.5 V to 30 V input with a nominal 9 V operating point. It integrates pulse-width modulation control for compact off-line flyback and buck power supply designs. Packaged in a 10-pin SSOP for minimal PCB area in space-constrained power modules.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- VIPER222LSTR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3231(MOQ 1)
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Current-mode PWM control with 4.5 V to 30 V input range enabling flexible AC/DC conversion for multiple supply rails
- Integrated switching regulator controller reducing external component count in compact flyback and buck converter designs
- 10-pin SSOP package allowing high-density power module layout with minimal PCB footprint
Applications
The VIPER222LSTR is used in off-line AC/DC power supplies for home appliances, building automation equipment, and low-power industrial adapters requiring efficient standby operation. Its current-mode PWM architecture and wide 4.5 V to 30 V input range make it suitable for auxiliary power rails in motor drive systems and smart metering devices.
Specifications
| Factory Lead Time | 18Weeks |
| Date Of Intro | 2020-01-22 |
| 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 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP10,.25,40 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Supply Current-Max (Isup) | 1.6mA |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 66kHz |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 1mm |
| 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 | Mainland China |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for VIPER222LSTR:
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Frequently Asked Questions
What input voltage range does the VIPER222LSTR support, and how does current-mode control benefit regulation performance?
The VIPER222LSTR accepts 4.5 V to 30 V at its VDD pin and uses current-mode PWM control, which provides inherent cycle-by-cycle peak current limiting, faster transient response, and natural feed-forward line regulation compared to voltage-mode controllers, making it easier to stabilize the feedback loop in flyback converters.
For which low-power off-line converter topologies is the VIPER222LSTR most commonly applied?
The VIPER222LSTR is most commonly applied in flyback and buck auxiliary power supplies delivering outputs in the 3.3 V to 12 V range at power levels up to approximately 5 W, as its integrated current-sense and PWM logic reduce the external component count and board area needed for isolated or non-isolated converter stages.
How does the 10-pin SSOP package of the VIPER222LSTR compare to DIP alternatives for production PCB assembly?
The 10-pin SSOP footprint occupies roughly 4.4 mm x 6.2 mm of PCB area, which is about 60% smaller than a comparable 10-pin DIP package, allowing automated SMD pick-and-place assembly at higher board densities and making the VIPER222LSTR suitable for consumer power adapter PCBs where vertical clearance is limited.
What standby-mode power characteristics make the VIPER222LSTR suitable for energy-efficient appliance applications?
The VIPER222LSTR's PWM burst-mode behavior at light load reduces switching losses and keeps standby power consumption below the 0.5 W threshold required by ErP Lot 6 and Energy Star standards, which is critical for smart home devices and appliance controllers that remain powered continuously but draw minimal load most of the time.
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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 |
|---|---|---|
| 1+ | $0.3276 | $0.33 |
| 10+ | $0.3254 | $3.25 |
| 25+ | $0.3231 | $8.08 |
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