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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Diodes Incorporated AZ34063AP-E1

Name: AZ34063AP-E1
Brand: Diodes Incorporated
SKU: AZ34063AP-E1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AZ34063AP-E1

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: AZ34063AP-E1.pdf

Description:: IC REG BUCK BOOST ADJ 1.5A 8PDIP

Quantity:: RFQ Add To RFQ list

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Inventory:4,529

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Product details

Overview

AZ34063AP-E1 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, and adjustable output voltage via external resistor divider. It integrates temperature-compensated 1.25 V reference (±2%), current-limit sensing, oscillator with timing capacitor control, and Darlington-output switch-used in battery chargers, ADSL modems, and negative voltage supplies.

For engineers reviewing the AZ34063AP-E1 datasheet, AZ34063AP-E1 pinout, AZ34063AP-E1 application, or AZ34063AP-E1 equivalent, key selection considerations include peak current limit threshold (300 mV typ), oscillator frequency tuning (up to 180 kHz), SOIC-8/DIP-8 package compatibility, thermal limits (T_J = +150 °C), and discontinuation status requiring supply-chain planning.

Technical Context

The AZ34063AP-E1 implements a fixed-frequency, current-mode switching controller with internal 1.25 V reference and comparator-based feedback loop. Its oscillator uses external CT capacitor to set switching frequency (30–45 kHz typical at 1 nF), while IPK sense pin monitors voltage drop across an external resistor for cycle-by-cycle peak current limiting.

It features dual-output drive architecture: Pin 1 (Switch Collector) and Pin 8 (Driver Collector) support both Darlington and common-emitter configurations, with saturation voltage specified at 1.0 V (Darlington, I_SW = 1.0 A) and 0.45 V (forced-β = 20). The device operates across –40 °C to +85 °C ambient and requires no external clock source.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3.0 V to 36 V - supports wide-input industrial and automotive battery systems without pre-regulation.
Output Switch Current	1.5 A - enables up to ~500 mA output in step-down configuration with standard external components.
Reference Voltage	1.25 V ±2% - sets precise output voltage via R1/R2 divider; enables stable regulation under line/load transients.
Oscillator Frequency	Up to 180 kHz - allows compact magnetics and low EMI with CT capacitor tuning (e.g., 470 pF → ~100 kHz).
Current Limit Threshold	300 mV typ - defines peak switch current as I_PK = 0.3 V / R_SC; ensures robust overcurrent protection.
Supply Current	4 mA max - enables low quiescent power operation in standby-sensitive applications like battery-powered modems.
Operating Temperature	–40 °C to +85 °C - qualified for industrial-grade embedded power conversion without derating.

Pinout & Package

AZ34063AP-E1 is supplied in DIP-8 package (0.300" wide, through-hole mounting) with 2.54 mm pin pitch and RoHS-compliant lead finish (Pb-free, green marking).

Pin/Terminal	Circuit Role	Design Meaning
1	Switch Collector	High-side collector of internal Darlington transistor; connects to inductor in step-up or step-down topologies.
2	Switch Emitter	Emitting node of internal switch; tied to ground or current-sense resistor depending on topology.
3	Timing Capacitor	Connects external CT capacitor to set oscillator frequency; discharge/charge current ratio determines f_OSC.
4	GND	Common ground reference for all internal circuits and external feedback network.
5	Comparator Inverting Input	Feedback node for output voltage regulation; compares divided V_OUT against 1.25 V reference.
6	VCC	Main power supply input; powers internal bias, oscillator, and driver circuits.
7	IPK Sense	Current-limit monitor input; senses voltage drop across R_SC to terminate switch conduction.
8	Driver Collector	Collector of internal driver transistor; used in non-Darlington configurations for enhanced saturation control.

Key Features

Feature	Design Value
Adjustable Output Voltage	Set via external R1/R2 divider; V_OUT = 1.25 × (1 + R1/R2) for step-up/step-down, or –1.25 × (R1 + R2)/R1 for inverting.
Integrated 1.25 V Reference	±2% accuracy over temperature ensures stable regulation without external precision references.
Peak Current Limiting	300 mV threshold enables fast, cycle-by-cycle protection using low-value, low-power sense resistors.
Dual Switch Configurations	Supports both Darlington (low saturation loss) and forced-β common-emitter (faster turn-off) modes via Pin 8 connection.
Low Standby Current	<4 mA supply current enables efficient operation in always-on or low-duty-cycle battery systems.

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: Primary DC-DC controller managing constant-current/constant-voltage charge profile via feedback and current sensing.

Use Value: Enables compact, low-BOM-count charger design with 1.5 A switch current supporting up to 500 mA charge rate.

Use Scenario: Generating isolated ±12 V rails for line-driver ICs and analog front-end circuitry in DSL transceivers.

IC Role / Device Role / Timing Role: Inverting converter generating negative supply from positive 5 V or 12 V rail.

Use Value: Eliminates need for separate negative supply IC; 1.25 V reference ensures tight regulation of –12 V output.

Hubs

Negative Voltage Power Supplies

Use Scenario: Providing regulated 3.3 V or 5 V auxiliary power to USB hub controllers and port-switching logic.

IC Role / Device Role / Timing Role: Step-down regulator converting 12 V bus to 5 V/3.3 V with adjustable output and current limiting.

Use Value: Supports hot-plug transient handling via peak current limit; DIP-8 package simplifies manual assembly and rework.

Use Scenario: Generating –5 V or –12 V for op-amp biasing, sensor signal conditioning, or RS-232 level shifting.

IC Role / Device Role / Timing Role: Dedicated inverting DC-DC converter with fixed 1.25 V reference and precision feedback path.

Use Value: Achieves ±1% output accuracy over temperature using only two external resistors and one capacitor.

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; 1.25 V reference (±2%), 1.5 A switch, 3–40 V input; slightly higher I_CC (8 mA max).	Identical step-up/step-down/inverting use cases; widely available but also discontinued by ON Semiconductor.	Direct functional replacement if DIP-8 footprint and legacy qualification are required; verify oscillator timing component values.
LM2574N-5.0	Fixed 5 V output, 0.5 A switch, 4–40 V input; no adjustable reference or inverting mode; includes internal compensation.	Limited to fixed-output step-down only; unsuitable for inverting or adjustable designs.	Select only when fixed 5 V output and lower current (≤500 mA) are acceptable; reduces external component count but sacrifices topology flexibility.

Compared with MC34063AP1G and LM2574N-5.0, the AZ34063AP-E1 offers full topology flexibility (step-up/step-down/inverting), adjustable output, and identical 1.5 A switch rating-but requires careful attention to discontinuation status and long-term supply continuity.

Availability

AZ34063AP-E1 is available at Aetrix Electronics and suitable for battery chargers, ADSL modems, and negative voltage power supplies requiring stable component supply despite its obsolete status.

Supply support for AZ34063AP-E1 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.

The AZ34063A belongs to Diodes' legacy DC-DC controller product line, designed for cost-sensitive, general-purpose switching power supplies where flexibility, minimal external parts count, and industrial temperature operation are critical.

FAQ

Is AZ34063AP-E1 still in active production?

No. Diodes Incorporated has officially discontinued the AZ34063AP-E1 (as stated in DS43791 Rev. 1–4, July 2021). It is marked "OBSOLETE – PART DISCONTINUED" in all official documentation. Aetrix Electronics maintains limited legacy stock and supports last-time-buy programs with full traceability and extended warranty terms.

What is the difference between AZ34063AP-E1 and AZ34063AM-E1?

AZ34063AP-E1 uses the DIP-8 package (through-hole), while AZ34063AM-E1 uses SOIC-8 (surface-mount). Both share identical electrical specifications, pinout mapping, and thermal ratings (DIP-8: 1.25 W P_D, SOIC-8: 780 mW). The "P" suffix denotes DIP-8; "M" denotes SOIC-8 per Diodes' ordering information table.

Can AZ34063AP-E1 be used in automotive applications?

The AZ34063AP-E1 itself is not AEC-Q100 qualified. Diodes states that automotive-grade variants require specific change control, PPAP capability, and IATF 16949 manufacturing-none of which apply to this part. It is rated for –40 °C to +85 °C industrial operation only; use in automotive environments requires full system-level validation and derating.

How do I calculate the timing capacitor value for a target switching frequency?

Use the empirical relationship f_OSC ≈ 1 / (2.3 × R_CT × C_CT), where R_CT = 1.8 kΩ (internal) and C_CT is the external capacitor. For example, 470 pF yields ~100 kHz. Confirm with Figure 9 (Oscillator Frequency vs. CT) in DS43791, as actual frequency varies with V_CC and temperature.

AZ34063AP-E1 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 8-DIP (0.300", 7.62mm)

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:: Through Hole

Supplier Device Package:: 8-PDIP

AZ34063AP-E1 FAQ

1.How can I place an order for AZ34063AP-E1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AZ34063AP-E1 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 AZ34063AP-E1 reliable?

The price and inventory of AZ34063AP-E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ34063AP-E1 is usually 5 days.

3.What payment methods are accepted for AZ34063AP-E1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ34063AP-E1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AZ34063AP-E1?

AZ34063AP-E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AZ34063AP-E1 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 AZ34063AP-E1?

For technical support, including AZ34063AP-E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ34063AP-E1 requirements.

6.How does Aetrix verify that AZ34063AP-E1 is sourced from the original manufacturer or authorized distributors?

All AZ34063AP-E1 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 AZ34063AP-E1 meets industry standards.

7.What is the process for return or replacement of AZ34063AP-E1?

All AZ34063AP-E1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ34063AP-E1, 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 AZ34063AP-E1 part is unused and in its original packaging.

Return procedure for AZ34063AP-E1:

1.Submit a request within 90 days.

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

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