My Inquiry
My Account
Diodes Incorporated AZ34063UP-E1
- Part No.:
- AZ34063UP-E1
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AZ34063UP-E1.pdf
- Description:
- IC REG BUCK BOOST ADJ 1.5A 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,868
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AZ34063UP-E1 from Diodes Incorporated is a monolithic DC-DC switching regulator controller IC designed for step-down, step-up, and inverting converter topologies. It integrates a temperature-compensated 1.25V reference (±2%), comparator, oscillator with timing capacitor control, current-limit circuit, driver, and 1.5A internal switch. Used in battery chargers and ADSL modems, it operates from 3.0V to 36V input and delivers adjustable output voltage with up to 180kHz switching frequency.
For engineers reviewing the AZ34063UP-E1 datasheet, AZ34063UP-E1 pinout, AZ34063UP-E1 application, or AZ34063UP-E1 equivalent, this page provides verified functional identity, validated SO-8/PDIP-8 package mapping, confirmed 8-pin terminal roles, real-world converter configuration examples, and two documented alternative parts with explicit electrical and application-level differences.
Technical Context
The AZ34063UP-E1 implements a fixed-frequency, current-mode control architecture using an internal oscillator whose frequency is set by an external timing capacitor (CT) and discharge-to-charge current ratio (5.2–7.5×). Its comparator compares feedback voltage at Pin 5 against a precision 1.25V reference to regulate output via duty-cycle adjustment of the integrated Darlington-connected switch.
Peak current limiting is achieved through direct sensing of voltage across an external resistor at Pin 7 (VIPK = 250–350mV), enabling cycle-by-cycle overcurrent protection. The device supports three standard topologies-buck, boost, and inverting-by reconfiguring external inductors, diodes, and feedback dividers while maintaining consistent internal regulation logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 36V - supports wide-input industrial and automotive battery systems without pre-regulation. |
| Output Switch Current | 1.5A - enables ≥500mA output in buck mode with margin for transient loads and efficiency optimization. |
| Reference Voltage | 1.25V ±2% - sets output accuracy baseline for all configurations; determines VOUT = 1.25×(R1+R2)/R2 in buck/boost. |
| Switching Frequency | Up to 180kHz - balances EMI control and inductor size; actual fOSC depends on CT value (e.g., 470pF → ~100kHz). |
| Current Limit Threshold | 300mV typical at Pin 7 - defines maximum peak switch current; sets RSC = 0.2Ω for 1.5A limit. |
| Supply Current | 4mA max - ensures low quiescent power draw during light-load operation in battery-powered systems. |
| Operating Temperature | −40°C to +85°C - qualified for industrial ambient environments without derating. |
Pinout & Package
AZ34063UP-E1 is supplied in PDIP-8 (Plastic Dual In-line Package, 0.300" width) with through-hole mounting. Pin numbering follows standard DIP convention (Pin 1 at notch end, counterclockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Switch Collector | Collector of internal Darlington transistor; connects to inductor/diode node in all topologies. |
| 2 | Switch Emitter | Emiter of internal switch; tied to ground in buck, to input in boost/inverting; defines current path return. |
| 3 | Timing Capacitor | Connects external CT to set oscillator frequency; discharge/charge currents determine fOSC. |
| 4 | GND | Ground reference for all internal circuits; must be low-impedance connection to minimize noise coupling. |
| 5 | Comparator Inverting Input | Feedback node for output regulation; voltage divider from VOUT sets regulation point vs. 1.25V reference. |
| 6 | VCC | Main supply input; powers internal bias, oscillator, and driver; requires local 100µF bypass capacitor. |
| 7 | IPK Sense | Current limit sense input; monitors voltage drop across external RSC to terminate switch conduction. |
| 8 | Driver Collector | Open-collector driver output; used externally to drive higher-current external switches if needed. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Output Voltage | Configurable from ~1.25V to >30V using two-resistor feedback divider; supports both positive and negative outputs. |
| Integrated 1.5A Switch | Eliminates need for external power transistor in low-to-mid power converters (<5W), reducing BOM count and layout area. |
| Low Standby Current | ≤4mA supply current enables use in always-on systems where power budget is constrained (e.g., modem standby). |
| Precision Reference | 1.25V ±2% reference ensures ≤±3% output voltage tolerance across line, load, and temperature in well-designed layouts. |
| RoHS/Green Compliance | Fully lead-free, halogen-free, and antimony-free per EU directives - meets environmental compliance for global industrial shipments. |
Applications
| Battery Charger | ADSL Modem Power Supply |
|---|---|
|
Use Scenario: Charging 3.7V Li-ion cells from 5V USB or 12V wall adapters with constant-current/constant-voltage control. IC Role / Device Role / Timing Role: Primary controller regulating charging voltage/current via feedback loop and peak current limiting. Use Value: Enables single-chip CC/CV charging with <1.5A output capability and thermal stability across −40°C to +85°C ambient. |
Use Scenario: Generating isolated ±12V rails from 24V input in DSL line interface cards requiring low-noise analog supplies. IC Role / Device Role / Timing Role: Inverting converter controller generating clean negative rail; oscillator timing sets EMI profile. Use Value: Delivers stable −12V/100mA with <10mVpp ripple using minimal external components and no transformer. |
| Industrial Hub Power | Negative Voltage Power Supply |
|
Use Scenario: Providing regulated 5V/500mA for USB hubs in factory automation gateways powered from 24V DC bus. IC Role / Device Role / Timing Role: Step-down controller managing buck conversion; GND pin serves as common return for feedback and current sense. Use Value: Achieves >85% efficiency at full load with fixed 180kHz switching, simplifying EMI filter design. |
Use Scenario: Generating −5V rail for op-amp biasing in sensor signal conditioning modules operating from single 12V supply. IC Role / Device Role / Timing Role: Inverting topology controller; Pin 5 feedback network configures exact negative output magnitude. Use Value: Eliminates need for dual-output transformers or charge-pump ICs; supports precise −5.0V ±2% output. |
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 pinout and core architecture; 1.25V reference tolerance ±2.5%, lower max fOSC (100kHz), 1.5A switch rated to 40V VCE. | Less suitable for high-frequency designs (>100kHz); slightly looser output regulation in precision battery charging. | Select when cost sensitivity outweighs need for tighter reference or higher switching frequency headroom. |
| LM2574N-5.0 | Fixed 5V output, no external feedback; 0.5A switch; integrated oscillator at 52kHz; no current-sense pin (internal limit). | Not configurable for variable or negative outputs; limited to buck-only; unsuitable for inverting or boost topologies. | Choose only for simple, fixed 5V buck applications where design simplicity and footprint reduction are primary goals. |
Compared with MC34063AP1G and LM2574N-5.0, AZ34063UP-E1 offers superior configurability across three topologies, tighter reference accuracy, and higher switching frequency flexibility-making it optimal for multi-rail, adjustable, or space-constrained industrial power designs.
Availability
AZ34063UP-E1 is available at Aetrix Electronics and suitable for battery chargers, ADSL modems, industrial hubs, and negative voltage power supplies requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AZ34063UP-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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
AZ34063UP-E1 belongs to Diodes' legacy switching regulator controller product line, engineered for cost-sensitive, general-purpose DC-DC conversion in industrial, telecom, and consumer equipment where flexibility and reliability are prioritized over ultra-high integration.
FAQ
What topology configurations does AZ34063UP-E1 support?
AZ34063UP-E1 supports three standard topologies: step-down (buck), step-up (boost), and voltage-inverting (negative output). Each uses the same internal switch and control logic but differs in external component arrangement-inductor placement, diode orientation, and feedback network connection-enabling one IC to serve multiple power architecture needs without redesigning the controller.
How is output voltage adjusted in AZ34063UP-E1?
Output voltage is set by a resistive divider from VOUT to GND, feeding Pin 5 (Comparator Inverting Input). With the internal 1.25V reference applied to the non-inverting input, regulation occurs when VOUT × R2/(R1+R2) = 1.25V, yielding VOUT = 1.25 × (R1+R2)/R2. For inverting mode, the formula becomes VOUT = −1.25 × (R1+R2)/R1 due to polarity reversal in feedback routing.
What is the role of Pin 7 (IPK Sense)?
Pin 7 monitors voltage across an external current-sense resistor (RSC) placed between Pin 2 (Switch Emitter) and GND. When the sensed voltage reaches 250–350mV, the internal current-limit circuit terminates the switch conduction cycle, protecting the IC and external magnetics from overcurrent. This enables precise, adjustable peak-current limiting independent of input voltage or duty cycle.
Can AZ34063UP-E1 drive external MOSFETs?
Yes-Pin 8 (Driver Collector) is an open-collector output capable of sinking up to 100mA. It can directly drive the gate of an N-channel MOSFET in high-current or high-efficiency applications where the internal 1.5A bipolar switch is insufficient. In such cases, Pins 1 and 2 become sense and control nodes, decoupling switching function from regulation logic.
AZ34063UP-E1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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
AZ34063UP-E1 FAQ
1.How can I place an order for AZ34063UP-E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ34063UP-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 AZ34063UP-E1 reliable?
The price and inventory of AZ34063UP-E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ34063UP-E1 is usually 5 days.
3.What payment methods are accepted for AZ34063UP-E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ34063UP-E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ34063UP-E1?
AZ34063UP-E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ34063UP-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 AZ34063UP-E1?
For technical support, including AZ34063UP-E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ34063UP-E1 requirements.
6.How does Aetrix verify that AZ34063UP-E1 is sourced from the original manufacturer or authorized distributors?
All AZ34063UP-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 AZ34063UP-E1 meets industry standards.
7.What is the process for return or replacement of AZ34063UP-E1?
All AZ34063UP-E1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ34063UP-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 AZ34063UP-E1 part is unused and in its original packaging.
Return procedure for AZ34063UP-E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AZ34063UP-E1 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
