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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > AC DC Converters, Offline Switches

STMicroelectronics VIPER013LS

Name: VIPER013LS
Brand: STMicroelectronics
SKU: VIPER013LS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VIPER013LS

Manufacturer:: STMicroelectronics

Category:: AC DC Converters, Offline Switches

Package:: 10-SOP (0.154", 3.90mm Width)

Datasheet:: VIPER013LS.pdf

Description:: IC OFFLINE SW MULT TOP 10SSOP

Quantity:: RFQ Add To RFQ list

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Inventory:1,607

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Product details

Overview

VIPER013LS from STMicroelectronics is a high-voltage off-line PWM converter IC integrating an 800 V avalanche-rugged N-channel MOSFET, current-mode PWM controller, embedded HV startup circuit, and sense-FET. It delivers up to 4.5 W in open-frame designs at 50 °C ambient, supports flyback/buck/buck-boost topologies, and operates with 120 kHz ±7% jittered switching frequency for EMI reduction.

For engineers reviewing the VIPER013LS datasheet, VIPER013LS pinout, VIPER013LS application, or VIPER013LS equivalent, this device is selected for ultra-low no-load power (<10 mW @230 VAC), self-supply capability eliminating bias windings, and integrated OCP/OLP/VCC clamp/thermal shutdown protections in compact AC-DC converters.

Technical Context

The VIPER013LS implements a fixed-frequency current-mode PWM controller with jittered oscillator (120 kHz ±7% modulation depth) to spread spectral energy and reduce conducted EMI filter size. Its internal 800 V MOSFET enables direct connection to rectified mains up to 265 VAC with minimized snubber requirements.

It features dual supply modes: self-supply (HV current source recharges VCC when it drops to 4.25 V) and external supply (auxiliary winding or output-derived). Protection logic includes pulse-skip to prevent flux runaway, automatic restart on OLP/OVP, and soft-start (8 ms) to limit inrush current during startup or fault recovery.

Key Specifications

Parameter	Value and Actual Design Meaning
Switching Frequency	120 kHz ±7% - Jittered operation reduces peak EMI amplitude and eases compliance with CISPR-22/32 average detection limits.
MOSFET Breakdown Voltage	800 V - Enables universal AC input (85–265 VAC) without derating; reduces DRAIN snubber component count and size.
Drain Current Limit	360 mA typ. at 25 °C - Sets maximum peak primary current for 4.5 W open-frame output power at 50 °C ambient.
No-Load Power Consumption	<10 mW @230 VAC - Meets DOE Level VI and EU CoC Tier 2 standby efficiency requirements without auxiliary bias circuitry.
VCC Operating Range	4.5 V to 30 V - Supports wide-range self-supply operation; UVLO threshold at 4.0 V prevents erratic switching during brownout.
Thermal Shutdown	155 °C typ. - Protects against sustained overload or poor heatsinking; automatic restart after cooldown.
Integrated Error Amplifier	1.2 V reference with 500 µA/V transconductance - Enables stable primary-side regulation without optocoupler in cost-sensitive applications.

Pinout & Package

Package: SSOP10 (3.9 mm × 4.9 mm, 0.65 mm pitch), thermally enhanced with exposed drain pads (pins 6–10) connected to internal MOSFET metal pad for low R_TH-JA (95 °C/W with 100 mm² copper).

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Ground and MOSFET source	Return path for bias currents and internal MOSFET source; must be isolated from pulsed return paths to avoid noise coupling.
2 VCC	Controller supply	Charged by internal HV current source at startup; powers internal logic; requires ≥10 µF storage capacitor and 0.1 µF bypass.
3 DIS	Disable input	Triggers auto-restart OVP protection when voltage exceeds 1.2 V for >1 ms; tied to GND if unused.
4 FB	Direct feedback input	Inverting input of transconductance error amplifier referenced to 1.2 V; accepts voltage divider from output or VCC for primary regulation.
5 COMP	Compensation node	Output of internal E/A; connects to RC network for loop stability; driven directly by optocoupler in secondary-feedback designs.
6–10 DRAIN	MOSFET drain terminals	High-voltage power switch nodes; internally connected to MOSFET die metal pad; require PCB copper pour for thermal dissipation.

Key Features

Feature	Design Value
Jittered 120 kHz oscillator	±7% frequency spread at 260 Hz reduces EMI peak amplitudes, enabling smaller input EMI filters and lower BOM cost.
Self-supply mode	Eliminates auxiliary winding and bias components by using internal HV current source to recharge VCC during OFF time.
Integrated 800 V MOSFET	Reduces external component count and PCB area; avalanche ruggedness withstands line transients without external snubber.
Pulse-skip protection	Prevents transformer core saturation during light-load or startup by skipping cycles when peak current exceeds IDLIM within t_{ON_MIN}.
Soft-start (8 ms)	Gradually increases current limit setpoint in 8 steps to suppress inrush current and avoid output overshoot during power-up or fault recovery.

Applications

Smart Home Sensors

LED Driver Modules

Use Scenario: Low-power AC-DC conversion for battery-free Zigbee/Z-Wave motion sensors and smart switches powered directly from mains.

IC Role / Device Role / Timing Role: Primary-side regulated flyback controller providing isolated 3.3 V/5 V output with <10 mW no-load consumption.

Use Value: Eliminates need for external bias winding or linear regulator, reducing bill-of-materials and enabling sub-10 mm profile designs.

Use Scenario: Constant-voltage LED driver for architectural accent lighting and emergency exit signs operating from 120/230 VAC.

IC Role / Device Role / Timing Role: Integrated PWM controller + 800 V MOSFET delivering 4.5 W output in compact open-frame layout with minimal heatsinking.

Use Value: Achieves >75% efficiency at full load and meets IEC 61347-1 surge immunity due to 800 V avalanche rating.

Industrial Control Panels

Appliance Power Supplies

Use Scenario: Auxiliary power supply for PLC I/O modules and HMI touchscreens requiring reliable 5 V/12 V rails in factory environments.

IC Role / Device Role / Timing Role: Flyback converter with OLP, OVP, and thermal shutdown protecting against short-circuited loads and ambient temperature excursions.

Use Value: Automatic restart after fault clears ensures unattended operation; 155 °C thermal shutdown prevents permanent damage during convection-limited cooling.

Use Scenario: Standby power supply for washing machines, microwaves, and HVAC controllers needing continuous 3.3 V/5 V for microcontroller wake-up logic.

IC Role / Device Role / Timing Role: Self-supplied buck-boost converter supporting universal AC input and delivering <10 mW no-load power per DOE Level VI.

Use Value: Removes need for dedicated standby transformer, cutting transformer cost and enabling single-stage power architecture.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage offline PWM controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICE2QS03G	650 V MOSFET, fixed 65 kHz frequency, no jitter, requires external startup resistor	Limited to 230 VAC max input; higher no-load consumption (~35 mW); no self-supply mode	Select when cost sensitivity outweighs EMI performance and universal input is not required.
LNK306P	700 V MOSFET, 66 kHz, integrated X-cap discharge, no VCC pin - fully self-biased	No external VCC capacitor needed; lower max output power (3.5 W); lacks programmable DIS/OVP	Select for ultra-low-component-count adapters where 3.5 W output suffices and DIS-based OVP is unnecessary.

Compared with VIPER013LS, ICE2QS03G offers lower integration and higher no-load loss but lower unit cost, while LNK306P eliminates VCC components entirely at the expense of reduced power capability and missing protection flexibility.

Availability

VIPER013LS is available at Aetrix Electronics and suitable for smart home sensor power supplies, LED driver modules, and industrial control panel auxiliary rails requiring stable component supply across extended product lifecycles.

Supply support for VIPER013LS includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensing solutions for industrial, automotive, and consumer markets.

VIPER is ST's dedicated family of high-voltage offline AC-DC converter ICs targeting ultra-low standby power, minimal external component count, and robust protection in cost-sensitive power supplies for appliances, lighting, and building automation.

FAQ

What is the maximum continuous output power achievable with VIPER013LS in an open-frame design?

The VIPER013LS delivers up to 4.5 W of continuous output power in open-frame configurations at 50 °C ambient temperature with adequate PCB copper heatsinking (100 mm²). This is validated per ST's DS11423 Rev 2, Table 8, and assumes proper thermal layout including copper pour under pins 6–10 to achieve R_TH-JA = 95 °C/W.

Does VIPER013LS require an external startup resistor, and how does its HV startup work?

No external startup resistor is required. The VIPER013LS integrates an 800 V startup FET and switchable HV current source. At power-on, when DRAIN voltage exceeds ~30 V, the current source delivers ICH1 (1.9 mA typ.) to charge the VCC capacitor. As VCC rises above 1 V, charging current increases to ICH2 (4.5 mA), then to ICH3 (8.8 mA) during steady-state self-supply operation.

Can VIPER013LS operate in primary-side regulation without an optocoupler?

Yes. The integrated 1.2 V reference and transconductance error amplifier (GM = 500 µA/V) allow direct feedback from the output via a resistive divider to the FB pin. This enables stable primary-side regulation in non-isolated buck or buck-boost topologies, or in flyback designs where output voltage sensing is referenced to VCC instead of ground.

What protection features are built into VIPER013LS, and how do they reset?

VIPER013LS includes overload/short-circuit (OLP), line/output overvoltage (OVP), drain overcurrent (OCP), VCC overvoltage clamp, thermal shutdown, and pulse-skip protection. All protections except thermal shutdown trigger automatic restart after fixed delays (e.g., 1 s for OLP), while thermal shutdown resets only after junction temperature falls below hysteresis threshold (~140 °C).

VIPER013LS Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 10-SOP (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

Output Isolation:: Either

Internal Switch(s):: Yes

Voltage - Breakdown:: 800V

Topology:: Buck, Buck-Boost, Flyback

Voltage - Start Up:: -

Voltage - Supply (Vcc/Vdd):: 4.5V ~ 30V

Duty Cycle:: 80%

Frequency - Switching:: 60kHz

Power (Watts):: 7 W

Fault Protection:: Current Limiting, Over Temperature, Over Voltage, Short Circuit

Control Features:: -

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Supplier Device Package:: 10-SSOP

Mounting Type:: Surface Mount

VIPER013LS FAQ

1.How can I place an order for VIPER013LS through Aetrix?

Please submit a Request for Quotation (RFQ) for VIPER013LS on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for VIPER013LS reliable?

The price and inventory of VIPER013LS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VIPER013LS is usually 5 days.

3.What payment methods are accepted for VIPER013LS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VIPER013LS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VIPER013LS?

VIPER013LS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VIPER013LS order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for VIPER013LS?

For technical support, including VIPER013LS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VIPER013LS requirements.

6.How does Aetrix verify that VIPER013LS is sourced from the original manufacturer or authorized distributors?

All VIPER013LS products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that VIPER013LS meets industry standards.

7.What is the process for return or replacement of VIPER013LS?

All VIPER013LS units undergo pre-shipment inspection (PSI). If there is an issue with VIPER013LS, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The VIPER013LS part is unused and in its original packaging.

Return procedure for VIPER013LS:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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