PN8034 Overview
The Chipown PN8034 is a highly integrated non-isolated AC/DC switching power supply IC combining a PFM (Pulse Frequency Modulation) controller and a 650V intelligent power MOSFET with high avalanche energy capability within a single monolithic device. This level of integration dramatically reduces the number of external components required to build a complete offline power supply, eliminating the separate gate driver circuitry, startup resistor network complexity, and discrete power switch typically needed in conventional AC/DC converter designs. The PN8034 is targeted at low-power non-isolated switching power supplies in the sub-5W range, covering the broad market of auxiliary power supplies, smart home controllers, LED lighting modules, and small appliance power stages where minimal PCB area and BOM cost are primary design constraints.
A built-in high-voltage startup module enables fast system startup from the mains supply without a large external startup resistor — reducing power dissipation in the startup network and contributing to ultra-low standby power consumption that supports compliance with international standby efficiency standards. Chipown’s PN8034 uses frequency reduction modulation technology at light load and standby conditions, reducing the switching frequency as output power demand falls, which simultaneously reduces switching losses and improves EMI performance without dedicated external EMI suppression components. Output power capability is 3.6W at 230VAC in the DIP-7 package and 3.0W at 230VAC in the SOP-7 package, with the difference reflecting the thermal characteristics of each package.
The PN8034 provides a complete suite of intelligent protection functions: over-current protection (OCP), over-temperature protection (OTP), and undervoltage lockout (UVLO) — all integrated on-chip to safeguard both the device and the downstream load under fault conditions without requiring external protection circuitry. The high-avalanche-capability 650V MOSFET provides additional robustness against voltage spikes from inductive loads and mains transients. Available in both SOP-7 (SMD) and DIP-7 (through-hole) packages, the PN8034 suits automated SMD production and prototype or legacy through-hole assembly alike. ABL Semi stocks the PN8034 as a fully authentic, original Chipown factory product with flexible MOQ and compliance documentation for UK and European customers.
Key Specifications
| Parameter | Value |
|---|---|
| Device Type | Non-Isolated AC/DC Switching Regulator (PFM Controller + Integrated 650V MOSFET) |
| Integrated Power MOSFET Voltage | 650V (high avalanche capability) |
| Output Power — DIP-7 | 3.6W @ 230VAC |
| Output Power — SOP-7 | 3.0W @ 230VAC |
| Control Mode | PFM (Pulse Frequency Modulation) |
| Startup Circuit | Built-in high-voltage startup module |
| Standby Power | Ultra-low (frequency reduction modulation at light load) |
| EMI Technique | Frequency reduction modulation |
| Protection Features | OCP, OTP, UVLO — fully integrated |
| External Component Count | Extremely simplified (minimal external components required) |
| Package Options | SOP-7, DIP-7 |
Applications
The PN8034 is designed for low-power non-isolated offline AC/DC power supply applications where minimal component count, compact PCB footprint, and low standby power are the primary design requirements. Primary application areas include smart home device auxiliary power supplies, LED bulb and downlight driver modules, IoT sensor node power stages, electric meter auxiliary supplies, and small home appliance control board power inputs. The device is equally applicable in smart socket and plug power modules, wireless doorbell power supplies, and low-power industrial control panel auxiliary regulators, where its integrated 650V MOSFET, built-in startup, and comprehensive protection suite reduce both design complexity and production cost in sub-5W AC/DC converter designs.
Pin-to-Pin Compatible Alternatives
The PN8034’s SOP-7 and DIP-7 packages and integrated flyback/buck AC/DC switcher architecture are compatible with several widely deployed integrated AC/DC switching regulator ICs from established Western suppliers, enabling direct substitution to reduce BOM cost and diversify supply chain without PCB redesign.
| Reference Part Number | Original Manufacturer | Why Choose PN8034 |
|---|---|---|
| TNY268GN | Power Integrations | Integrated EcoSmart AC/DC switcher in DIP-7/SOP-7; PN8034 provides a pin-compatible alternative with built-in high-voltage startup, PFM frequency reduction for EMI, and integrated 650V MOSFET at a lower unit cost |
| TNY264GN | Power Integrations | Lower power TinySwitch in DIP-7; PN8034 offers equivalent non-isolated power supply integration with OCP, OTP, and UVLO protection in the same package footprint at a more competitive price from ABL Semi stock |
| NCP1010ST100T3G | onsemi | Self-supplied PWM controller with integrated switch in SOT-223; PN8034 provides equivalent integrated AC/DC functionality in the more widely used SOP-7 and DIP-7 packages with a simplified peripheral circuit |
| NCP1011ST100T3G | onsemi | Integrated flyback controller in SOT-223 targeting auxiliary supplies; PN8034 delivers comparable output power with PFM frequency reduction EMI control and a high-avalanche 650V MOSFET in SOP-7/DIP-7 |
| VIPer22ADIP | STMicroelectronics | Integrated high-voltage converter in DIP-8; PN8034 provides a 7-pin alternative with equivalent non-isolated power supply integration, lower external component count, and competitive pricing for sub-5W designs |
Frequently Asked Questions
Is PN8034 RoHS compliant?
Yes. The PN8034 is fully RoHS compliant. Chipown manufactures the PN8034 in accordance with EU RoHS Directive 2011/65/EU, ensuring the device is free from restricted hazardous substances including lead and mercury. ABL Semi can provide full compliance and trade documentation upon request to support UK and European regulatory and procurement requirements.
What are the pin-to-pin replacements for PN8034?
The PN8034 is a functional and footprint-compatible alternative to integrated AC/DC switching ICs including the Power Integrations TNY268GN and TNY264GN in DIP-7 and SOP-7, and is also comparable to the onsemi NCP1010/NCP1011 and STMicroelectronics VIPer22A in integrated offline power supply topology and protection scope. Refer to the compatibility table above for a detailed comparison.
What is the minimum order quantity (MOQ) for PN8034?
ABL Semi offers flexible MOQ for PN8034, supporting both prototype quantities and mass production orders. Contact us for current stock and pricing.
What package options are available for PN8034?
The PN8034 is available in two package options: SOP-7 (7-pin small outline surface-mount, rated 3.0W at 230VAC) and DIP-7 (7-pin through-hole, rated 3.6W at 230VAC). The higher power rating of the DIP-7 package reflects its improved thermal dissipation characteristics versus the SMD SOP-7. The DIP-7 footprint is compatible with Power Integrations TinySwitch DIP-7 devices, enabling direct board-level substitution in existing designs. Contact ABL Semi to confirm current stock availability for each package variant.
Does the PN8034 require an external power MOSFET, and what is the benefit of the integrated 650V MOSFET?
No. The PN8034 integrates the 650V power MOSFET directly on-chip, eliminating the need for a separate external switching transistor. This is one of the key cost and complexity advantages of the PN8034 over conventional PWM controller ICs such as the UC3842 that require a discrete power switch. The integrated MOSFET is rated to handle full mains rectified voltage (up to 650V) and is specified with high avalanche energy capability — meaning it can safely absorb energy from inductive voltage spikes during turn-off, providing robustness against the voltage transients common in non-isolated AC/DC flyback and buck topologies without requiring a large external snubber network. The result is a substantially simplified circuit with fewer external components, smaller PCB area, and lower total BOM cost compared to discrete-switch designs at equivalent output power levels.
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