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Diodes Incorporated AZ34063AMTR-G1
- Part No.:
- AZ34063AMTR-G1
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AZ34063AMTR-G1.pdf
- Description:
- IC REG BUCK BOOST ADJ 1.5A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,093
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Product details
Overview
AZ34063AMTR-G1 from Diodes Incorporated is a monolithic DC-DC converter controller IC supporting step-down, step-up, and inverting topologies with 3.0–36 V input range, 1.5 A internal switch current capability, 1.25 V ±2% precision reference, and up to 180 kHz switching frequency. It integrates oscillator, comparator, current-limit circuit, driver, and high-current bipolar switch for minimal external component count in compact power supply designs.
For engineers reviewing the AZ34063AMTR-G1 datasheet, AZ34063AMTR-G1 pinout, AZ34063AMTR-G1 application, or AZ34063AMTR-G1 equivalent, key selection considerations include its Darlington vs. common-emitter output configuration trade-offs, peak current sense threshold (300 mV typ), timing capacitor-based frequency control, and SOIC-8 green RoHS-compliant packaging for surface-mount assembly.
Technical Context
The AZ34063AMTR-G1 implements a fixed-frequency, current-mode controlled architecture where switching duty cycle is regulated via internal comparator feedback against a 1.25 V reference and external resistor divider at Pin 5. Its oscillator frequency is set by an external timing capacitor (CT) connected to Pin 3, with charge/discharge currents of 38 μA/240 μA (typ) enabling precise frequency tuning from ~30 kHz to 180 kHz.
Current limiting operates through voltage sensing at Pin 7 (IPK), comparing the drop across an external sense resistor to a 300 mV (typ) internal threshold. The integrated bipolar output switch supports both Darlington (Pin 1 & 8 tied) and common-emitter configurations, with saturation voltage specified at 1.0 V (Darlington, ISW = 1.0 A) and 0.45 V (forced-β = 20, non-Darlington).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 36 V - supports wide-input industrial and automotive battery-powered systems without pre-regulation. |
| Output Switch Current | 1.5 A - enables medium-power DC-DC conversion up to ~20 W with appropriate external components. |
| Reference Voltage | 1.25 V ±2% - provides stable feedback for accurate output voltage regulation across temperature (-40°C to +85°C). |
| Switching Frequency | Up to 180 kHz - balances efficiency, inductor size, and EMI in space-constrained designs. |
| Current Sense Threshold | 300 mV (typ) at Pin 7 - sets peak inductor current limit with predictable, temperature-stable trip point. |
| Supply Current | 4 mA max - ensures low quiescent power draw during operation, critical for battery longevity. |
| Thermal Resistance (SOIC-8) | 160 °C/W - defines junction-to-ambient thermal path; requires PCB copper area for safe 1.5 A continuous operation. |
Pinout & Package
AZ34063AMTR-G1 is packaged in a green, lead-free SOIC-8 (Small Outline Integrated Circuit, 8-pin) package per JEDEC MS-012, with 1.27 mm pitch and standard surface-mount footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Switch Collector | Collector of internal NPN Darlington switch; connects to inductor/diode node in boost/buck/invert topologies. |
| 2 | Switch Emitter | Emiter of internal switch; serves as current return path and ground reference for external sense resistor. |
| 3 | Timing Capacitor | Connects external CT capacitor to set oscillator frequency via internal charge/discharge current sources. |
| 4 | GND | Common ground reference for all internal circuits and external feedback/sense networks. |
| 5 | Comparator Inverting Input | Feedback node for output voltage regulation; compares resistor-divider voltage to 1.25 V reference. |
| 6 | VCC | Main power supply input (3–36 V); powers internal bias, oscillator, and driver circuits. |
| 7 | IPK Sense | Peak current limit input; monitors voltage drop across external sense resistor to terminate switch conduction. |
| 8 | Driver Collector | Collector of internal driver transistor; used in non-Darlington configurations to drive external PNP/NPN stages. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Output Voltage | Enabled by resistor divider on Pin 5; supports buck (VOUT = 1.25 × (R1+R2)/R2), boost, and inverting configurations. |
| Internal Precision Reference | 1.25 V ±2% over -40°C to +85°C - eliminates need for external reference, improving accuracy and reducing BOM count. |
| Integrated Current Limit | 300 mV ±50 mV sense threshold - provides robust overcurrent protection without external op-amp or comparator. |
| Dual Output Configurations | Supports both Darlington (Pins 1 & 8 tied) and common-emitter (Pin 8 driven externally) switch modes - enables optimization for saturation voltage or speed. |
| Low Standby Current | <4 mA supply current - extends battery life in portable applications such as ADSL modems and chargers. |
Applications
| Battery Chargers | ADSL Modems |
|---|---|
Use Scenario: Charging single-cell Li-ion or multi-cell NiMH batteries from variable wall adapters or USB sources. IC Role / Device Role / Timing Role: Controller for step-down or step-up DC-DC stage regulating charging voltage/current with adjustable feedback and current limiting. Use Value: Enables compact, cost-effective charger design using only one IC and <5 external passive components per topology. | Use Scenario: Generating isolated ±12 V rails from 5 V or 12 V system supply in DSL line interface cards. IC Role / Device Role / Timing Role: Inverting converter controller producing negative voltage rail for analog front-end biasing and line drivers. Use Value: Eliminates need for dual-output transformers or separate negative regulators, reducing board area and BOM cost. |
| Hubs | Negative Voltage Power Supplies |
Use Scenario: Providing regulated 3.3 V or 5 V bus power to downstream USB peripherals from 12 V input in powered USB hubs. IC Role / Device Role / Timing Role: Step-down controller managing power delivery with overcurrent protection and thermal stability. Use Value: Delivers up to 1.5 A output current with built-in current limiting, preventing hub shutdown during peripheral hot-plug events. | Use Scenario: Generating stable -5 V or -12 V for op-amp biasing, sensor excitation, or legacy logic in industrial instrumentation. IC Role / Device Role / Timing Role: Dedicated inverting DC-DC controller with precision reference and adjustable output via R1/R2 divider. Use Value: Achieves ±2% output accuracy over temperature without trimming, simplifying calibration in test equipment designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC-DC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC34063AP1G | Same functional architecture but rated for -40°C to +125°C; higher VCC absolute max (40 V); identical pinout and reference. | Qualified for extended-temperature automotive environments; not RoHS-compliant (Pb-containing DIP-8). | Select when operating above +85°C ambient or requiring AEC-Q100 alignment; verify Pb-free compliance requirements. |
| LM2574N-5.0 | Fixed 5 V output, no external feedback; 0.5 A switch current; lower IQ (8 mA); different pinout and topology support (buck-only). | Limited to step-down only; lacks inverting/boost capability and adjustable output; simpler for fixed-rail designs. | Choose for cost-sensitive, single-rail 5 V systems where topology flexibility and current >0.5 A are not required. |
Compared with MC34063AP1G and LM2574N-5.0, the AZ34063AMTR-G1 offers RoHS-compliant SOIC-8 packaging, full topology flexibility, and 1.5 A switch current-making it optimal for compact, adjustable, medium-power DC-DC designs where thermal management and environmental compliance are prioritized over extended temperature range or fixed-output simplicity.
Availability
AZ34063AMTR-G1 is available at Aetrix Electronics and suitable for battery chargers, ADSL modems, USB hubs, and negative voltage power supplies requiring stable component supply, long-term lifecycle support, and green RoHS-compliant sourcing.
Supply support for AZ34063AMTR-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 high-reliability power management, signal integrity, and protection solutions for industrial, computing, and communications markets.
The AZ34063A belongs to Diodes' legacy DC-DC controller product line, designed specifically for cost-sensitive, topology-flexible switching regulator applications requiring minimal external components and broad input voltage operation.
FAQ
What is the maximum recommended output current for AZ34063AMTR-G1 in a step-down configuration?
The internal switch is rated for 1.5 A peak current, but practical continuous output current depends on thermal design, input/output voltage differential, and external component selection. In a typical SOIC-8 layout with 2 cm² copper pour, sustained output current is limited to ~800 mA at 12 VIN/5 VOUT due to thermal constraints (θJA = 160 °C/W). Derating is required above +60°C ambient.
Can AZ34063AMTR-G1 be used in a synchronous rectifier configuration?
No - AZ34063AMTR-G1 drives only a single NPN Darlington or common-emitter switch and lacks complementary gate drive outputs or dead-time control required for synchronous rectification. External MOSFETs must be driven asynchronously using the internal switch's collector or external driver circuits, accepting diode conduction losses.
How does the timing capacitor (CT) value affect switching frequency and efficiency?
CT directly sets oscillator frequency: fOSC ≈ 1/(2.5 × CT) for CT in farads. Lower CT increases frequency, reducing inductor size but increasing switching losses and decreasing efficiency at high loads. For 100 kHz operation, CT ≈ 400 pF is typical; values below 220 pF risk instability, while above 1 nF limits max frequency to ~30 kHz and improves light-load efficiency.
Is AZ34063AMTR-G1 qualified for automotive applications under AEC-Q100?
No - AZ34063AMTR-G1 is not AEC-Q100 qualified. Diodes offers the pin-compatible AZ34063Axx variants with PPAP capability and IATF 16949 manufacturing, but the AMTR-G1 variant is intended for industrial and commercial applications only. Automotive use requires formal qualification documentation and change control, which this part does not carry.
AZ34063AMTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Buck, Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 36V
- Current - Output:
- 1.5A (Switch)
- Frequency - Switching:
- Up to 180kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AZ34063AMTR-G1 FAQ
1.How can I place an order for AZ34063AMTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ34063AMTR-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 AZ34063AMTR-G1 reliable?
The price and inventory of AZ34063AMTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ34063AMTR-G1 is usually 5 days.
3.What payment methods are accepted for AZ34063AMTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ34063AMTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ34063AMTR-G1?
AZ34063AMTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ34063AMTR-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 AZ34063AMTR-G1?
For technical support, including AZ34063AMTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ34063AMTR-G1 requirements.
6.How does Aetrix verify that AZ34063AMTR-G1 is sourced from the original manufacturer or authorized distributors?
All AZ34063AMTR-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 AZ34063AMTR-G1 meets industry standards.
7.What is the process for return or replacement of AZ34063AMTR-G1?
All AZ34063AMTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ34063AMTR-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 AZ34063AMTR-G1 part is unused and in its original packaging.
Return procedure for AZ34063AMTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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