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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Supply Controllers, Monitors

Diodes Incorporated APR34330CMPTR-G1

Name: APR34330CMPTR-G1
Brand: Diodes Incorporated
SKU: APR34330CMPTR-G1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: APR34330CMPTR-G1

Manufacturer:: Diodes Incorporated

Category:: Power Supply Controllers, Monitors

Package:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Datasheet:: APR34330CMPTR-G1.pdf

Description:: MOSFET N-CH 5V 8-SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

APR34330CMPTR-G1 from Diodes Incorporated is a secondary-side synchronous rectifier IC integrating a 32 mΩ N-channel MOSFET and optimized gate driver for DCM-mode flyback converters. It operates with 5.15 V internal trigger voltage, -15 mV turn-off threshold, 6 V VCC max, and supports 5 V output adapters up to 50 V drain rating. Used in compact 5 V AC/DC chargers for portable electronics.

For engineers reviewing the APR34330CMPTR-G1 datasheet, APR34330CMPTR-G1 pinout, APR34330CMPTR-G1 application, or APR34330CMPTR-G1 equivalent, key selection criteria include secondary-side V_DS-sensing timing, SO-8EP thermal performance, R_DS(ON) vs. gate charge trade-off, and compatibility with primary-side controllers using V_DET feedback.

Technical Context

The APR34330CMPTR-G1 implements voltage-mode sensing of the MOSFET's drain-to-source voltage to autonomously control gate drive timing in discontinuous conduction mode (DCM) flyback topologies. Its integrated driver delivers fast turn-on/turn-off with minimal external components-only V_DET, V_CC, and GND connections required beyond the power path.

It features over-voltage protection (OVP) on V_CC and under-voltage lockout (UVLO) to prevent erratic operation during startup or brownout. The internal 32 mΩ N-MOSFET is optimized for low Q_g, fast body diode reverse recovery (t_rr), and 50 V drain-source breakdown rating-enabling robust 5 V output regulation at high efficiency.

Key Specifications

Parameter	Value and Actual Design Meaning
Internal Trigger Voltage	5.15 V - sets precise turn-on point relative to output voltage ripple, enabling stable 5 V regulation without external sensing resistors
Turn-Off Threshold Voltage	-15 mV - detects negative V_DS crossing to terminate conduction before reverse current flow, minimizing shoot-through loss
R_DS(ON)	32 mΩ @ V_GS = 5 V - reduces conduction loss by ~60% vs. 100 mΩ Schottky diode at 2 A load, improving full-load efficiency
V_CC Max Rating	6 V - limits supply voltage to protect internal logic and gate driver, requiring external Zener or LDO clamp if V_CC exceeds 6 V
Drain Voltage Rating	50 V - supports 5 V output designs with ≥2× safety margin against reflected transients in universal-input flybacks
Operating Current	100 μA - ultra-low quiescent current preserves light-load efficiency and enables direct V_CC derivation from auxiliary winding

Pinout & Package

APR34330CMPTR-G1 is housed in an SO-8EP (exposed pad) package, providing enhanced thermal dissipation over standard SO-8 for sustained 2–3 A output currents in space-constrained adapters.

Pin/Terminal	Circuit Role	Design Meaning
V_CC	Supply input	Power rail for internal logic and gate driver; must be clamped ≤6 V and bypassed with ≥1 μF ceramic capacitor
GND	Ground reference	Common return for driver, sensing, and power FET source; requires low-inductance connection to PCB ground plane
DRAIN	Power switch terminal	Connects to secondary winding cathode and output capacitor anode; carries full output current and switching transients
V_DET	Voltage sense input	Monitors DRAIN-to-GND voltage to detect zero-current crossing; no external divider needed due to internal scaling
DRISR	Driver output	Direct gate drive node for integrated N-MOSFET; not accessible externally-no external gate resistor required

Key Features

Feature	Design Value
Synchronous rectification with integrated 32 mΩ N-MOSFET	Eliminates Schottky forward drop (0.4–0.5 V), reducing secondary conduction loss by >70% at 2 A versus discrete diode solutions
V_DS-based zero-current detection	Enables accurate turn-off without auxiliary current-sense transformers or complex timing circuits-reducing BOM count by ≥3 components
SO-8EP thermally enhanced package	Exposed pad lowers junction-to-board thermal resistance to ~45 °C/W, supporting 2.5 A continuous output without heatsink in 4-layer PCB
V_CC UVLO + OVP protection	Prevents false triggering during startup or line surges, ensuring reliable operation across 90–264 VAC input range with no external protection circuitry

Applications

5V Wall Adapters

USB Charging Ports

Use Scenario: Compact 5 V, 2.4 A AC/DC adapter for smartphones and tablets operating from universal 90–264 VAC input.

IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacing Schottky diode; senses V_DS to time MOSFET conduction window in DCM flyback.

Use Value: Increases full-load efficiency from 82% to 87%, reduces thermal rise by 12 °C, and enables 20 mm × 20 mm board area reduction.

Use Scenario: Multi-port USB charger with independent 5 V outputs per port, requiring tight cross-regulation and low standby power.

IC Role / Device Role / Timing Role: Integrated SR controller and power switch managing conduction timing per output winding; supports V_DET-based multi-winding sensing.

Use Value: Achieves <30 mW no-load power via 100 μA operating current and eliminates need for separate gate drivers per port.

Set-Top Box Standby Supplies

Smart Home Hub Auxiliary Rails

Use Scenario: 5 V/100 mA auxiliary supply in cable set-top boxes, powering microcontroller and IR receiver during deep sleep.

IC Role / Device Role / Timing Role: Low-quiescent synchronous rectifier maintaining regulation during burst-mode operation at <100 mW load.

Use Value: Enables compliance with ENERGY STAR® Version 7.0 standby power limit (<0.5 W) without compromising wake-up responsiveness.

Use Scenario: 5 V auxiliary rail in Wi-Fi/BLE-enabled smart home hubs with intermittent sensor polling and wireless transmission bursts.

IC Role / Device Role / Timing Role: Fast-recovery SR switch handling dynamic load steps from 10 mA to 1.5 A while maintaining <±3% output regulation.

Use Value: Prevents output sag during RF transmit events, eliminating brownout resets and extending battery backup runtime.

Equivalent & Alternatives

The following parts are listed as comparable options for similar secondary-side synchronous rectification applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
APR3415MTR-G1	15 mΩ R_DS(ON), SO-8 (non-exposed pad), same 5.3 V trigger voltage	Better suited for higher-current 5 V adapters (>2.5 A) where thermal headroom allows standard SO-8	Select when board layout permits larger thermal pad clearance or when lower conduction loss outweighs SO-8EP's thermal advantage
MP6908GJ-Z	12 mΩ R_DS(ON), 5 V trigger, requires external gate resistor and V_CC Zener clamp	Supports CCM/DCM modes but adds ≥2 external components and higher BOM cost	Choose for designs needing CCM capability or tighter V_OUT tolerance (<±1%) at expense of component count and layout complexity

Compared with APR3415MTR-G1, APR34330CMPTR-G1 trades 17 mΩ higher R_DS(ON) for superior thermal performance in constrained spaces; versus MP6908GJ-Z, it delivers lower system-level BOM cost and simpler layout at the expense of CCM support.

Availability

APR34330CMPTR-G1 is available at Aetrix Electronics and suitable for 5 V AC/DC adapters, USB charging ports, and set-top box standby supplies requiring stable component supply, RoHS-compliant packaging, and production-ready thermal performance.

Supply support for APR34330CMPTR-G1 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for consumer, industrial, and computing markets.

The APR34xxx series targets cost-sensitive, space-constrained 5 V offline power supplies-designed to replace Schottky diodes with minimal design change while delivering measurable efficiency and thermal gains.

FAQ

What is the minimum output current this device supports in DCM operation?

APR34330CMPTR-G1 reliably operates down to 50 mA output current in DCM mode. Its -15 mV turn-off threshold and 100 μA operating current ensure stable zero-crossing detection and low-noise gate drive even during burst-mode light-load conditions typical in ENERGY STAR-compliant adapters.

Can this IC be used with primary-side controllers lacking V_DET feedback capability?

Yes. APR34330CMPTR-G1 is self-timed via drain-source voltage sensing and requires no communication with the primary-side controller. It functions independently with standard flyback controllers like UC384x, VIPer, or CR68xx families-only needing connection to the secondary winding and output capacitor.

Is the SO-8EP exposed pad electrically connected to GND internally?

No. The exposed pad on the SO-8EP package is not internally connected to any pin. It must be soldered to a dedicated thermal pad tied to the PCB ground plane for optimal heat dissipation, but no electrical tie to GND is required or recommended unless specified in layout guidelines.

Does this device support synchronous rectification in continuous conduction mode (CCM)?

No. APR34330CMPTR-G1 is specifically designed for discontinuous conduction mode (DCM) and quasi-resonant (QR) flyback topologies. Its V_DS-sensing architecture lacks the timing control needed for CCM operation, where current never falls to zero between switching cycles.

APR34330CMPTR-G1 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Applications:: Secondary-Side Controller, Synchronous Rectifier

Voltage - Input:: -

Voltage - Supply:: 3.3V ~ 6V

Current - Supply:: 100 µA

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SO-EP

APR34330CMPTR-G1 FAQ

1.How can I place an order for APR34330CMPTR-G1 through Aetrix?

Please submit a Request for Quotation (RFQ) for APR34330CMPTR-G1 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 APR34330CMPTR-G1 reliable?

The price and inventory of APR34330CMPTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APR34330CMPTR-G1 is usually 5 days.

3.What payment methods are accepted for APR34330CMPTR-G1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APR34330CMPTR-G1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for APR34330CMPTR-G1?

APR34330CMPTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your APR34330CMPTR-G1 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 APR34330CMPTR-G1?

For technical support, including APR34330CMPTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APR34330CMPTR-G1 requirements.

6.How does Aetrix verify that APR34330CMPTR-G1 is sourced from the original manufacturer or authorized distributors?

All APR34330CMPTR-G1 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 APR34330CMPTR-G1 meets industry standards.

7.What is the process for return or replacement of APR34330CMPTR-G1?

All APR34330CMPTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with APR34330CMPTR-G1, 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 APR34330CMPTR-G1 part is unused and in its original packaging.

Return procedure for APR34330CMPTR-G1:

1.Submit a request within 90 days.

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

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