VIPER50ASPTR-E STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
VIPER50ASPTR-E is a fixed-frequency off-line PWM controller IC from STMicroelectronics featuring current-mode control and up to 2.7 A output current, operating from a 9 V to 15 V auxiliary supply with 13 V nominal. Housed in a 10-pin SOIC package, it integrates power switch driver and protection functions for flyback and forward converter topologies. Available in tape and reel for industrial power supply and adapter designs.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 11
- Lifecycle
- OBSOLETE
- Datasheet
- VIPER50ASPTR-E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.9659(MOQ 1800)
- 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 VIPER50ASPTR-E?
- Current-mode PWM control with fixed frequency operation simplifies loop compensation and provides inherent cycle-by-cycle overcurrent protection for offline AC-DC converters
- 2.7 A maximum output drive current supports gate driving of external MOSFETs in high-power flyback and forward converter topologies up to several hundred watts
- 9 V to 15 V auxiliary input supply range accommodates standard self-powered VCC rail voltages in transformer-based offline SMPS designs
- 10-pin SOIC package integrates control, drive, and protection functions reducing external component count compared to discrete PWM controller plus gate driver solutions
What is VIPER50ASPTR-E used for?
VIPER50ASPTR-E is designed for fixed-frequency offline switched-mode power supply control in AC-DC adapters, industrial power modules, and consumer electronics chargers where current-mode PWM ensures tight regulation and fast transient response. Its 2.7 A output drive capability suits medium-power flyback converters from 30 W to 150 W powering telecom equipment, white goods control boards, and energy-efficient lighting drivers. The integrated protection features including overcurrent and overvoltage sensing simplify compliance with international safety standards in single-stage isolated power supply designs.
What are the specifications of VIPER50ASPTR-E?
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 15V |
| Input Voltage-Min | 9V |
| Input Voltage-Nom | 13V |
| JESD-30 Code | R-PDSO-G10 |
| Number of Functions | 1 |
| Output Current-Max | 2.7A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP10,.55FL |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG |
| Supply Current-Max (Isup) | 16mA |
| Surface Mount | YES |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 200kHz |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Where can I find the VIPER50ASPTR-E datasheet?
VIPER50ASPTR-E Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for VIPER50ASPTR-E?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What maximum output drive current does VIPER50ASPTR-E provide, and which converter topologies does this support?
VIPER50ASPTR-E provides up to 2.7 A peak output drive current, sufficient for gate driving of external power MOSFETs in flyback and forward converter topologies ranging from 30 W to over 150 W, covering a wide range of AC-DC adapter and industrial power supply designs.
What supply voltage does VIPER50ASPTR-E require, and how is this typically generated in an offline converter design?
VIPER50ASPTR-E requires an auxiliary VCC supply of 9 V to 15 V (13 V nominal), which in typical offline flyback designs is derived from an auxiliary winding on the main transformer, providing self-powered startup once the converter reaches steady-state operation.
How does current-mode control in VIPER50ASPTR-E improve AC-DC converter performance compared to voltage-mode PWM?
Current-mode control in VIPER50ASPTR-E senses the primary switch current on a cycle-by-cycle basis, providing inherent overcurrent protection, simpler loop compensation with a single-pole response at most frequencies, and faster load transient response compared to voltage-mode PWM in flyback converter designs.
What end-of-life status does VIPER50ASPTR-E have, and how should procurement teams handle legacy design supply continuity?
VIPER50ASPTR-E has a YTEOL (Years To End Of Life) of 0, indicating the part is at or near end-of-life status. Procurement teams should evaluate last-time-buy quantities, stock 12–24 months of supply, and begin evaluating pin-compatible replacement ICs to ensure production continuity for existing designs.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
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 |
|---|---|---|
| 1800+ | $2.0153 | $3627.56 |
| 3000+ | $1.9841 | $5952.42 |
| 4200+ | $1.9659 | $8256.86 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit