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Diodes Incorporated AZ7500CP-E1
- Part No.:
- AZ7500CP-E1
- Manufacturer:
- Diodes Incorporated
- Category:
- DC DC Switching Controllers
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
AZ7500CP-E1.pdf
- Description:
- IC REG CTRLR BUCK 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,065
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Product details
Overview
AZ7500CP-E1 from BCD Semiconductor Manufacturing Limited is a voltage-mode PWM controller IC for switching power supplies, featuring a precision 5.0 V ±1% reference, dual error amplifiers, on-chip oscillator (1–200 kHz), dead-time control comparator, and push-pull or single-ended output selection via OUTPUT CTRL pin. It delivers 200 mA sink/source capability at TR output and supports SMPS, backlight inverters, and battery chargers.
For engineers reviewing the AZ7500CP-E1 datasheet, AZ7500CP-E1 pinout, AZ7500CP-E1 application, or AZ7500CP-E1 equivalent, key selection criteria include reference accuracy (±1%), oscillator frequency range (1–200 kHz), dual-error-amplifier architecture, dead-time control, and SOIC-16 package compatibility with industrial temperature range (−40°C to +85°C).
Technical Context
The AZ7500CP-E1 implements voltage-mode PWM control with two independent error amplifiers enabling dual-loop regulation (e.g., voltage + current feedback). Its oscillator supports master/slave operation via RT/CT pins and provides programmable frequency from 1 kHz to 200 kHz with ±1% typical stability over temperature.
Dead-time control prevents shoot-through in push-pull topologies by enforcing minimum off-time between complementary outputs. The OUTPUT CTRL pin selects operating mode: grounded for single-ended/parallel output, tied to VREF for normal push-pull operation - a hardware-configurable feature without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 5.0 V ±1% - enables tight output regulation in feedback loops without external trimming. |
| Oscillator Frequency Range | 1–200 kHz - set by external RT/CT; supports wide input voltage ranges and transformer size optimization. |
| Output Drive Capability | 200 mA sink/source at TR pin - directly drives gate drivers or discrete power transistors without buffer stages. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade power supply designs including chargers and inverters. |
| Supply Voltage Range | 7–36 V - accommodates unregulated DC inputs from rectified AC or battery sources. |
| Dead-Time Control Threshold | 3.3 V typical - ensures safe commutation timing margin in half-bridge or full-bridge configurations. |
Pinout & Package
Package: SOIC-16 (3.9 mm × 9.9 mm, 1.27 mm pitch), RoHS-compliant, lead-free (EA suffix), thermal resistance RθJA = 73°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (1IN+) | Error Amp 1 Non-Inverting Input | Connects to regulated output voltage divider for primary voltage loop sensing. |
| 2 (1IN−) | Error Amp 1 Inverting Input | Accepts feedback reference or secondary loop signal (e.g., current sense). |
| 3 (FEEDBACK) | PWM Comparator Inverting Input | Receives error amplifier output; compares against sawtooth ramp for duty-cycle generation. |
| 4 (DTC) | Dead-Time Control Input | Applies voltage to set minimum off-time between complementary outputs; threshold = 3.3 V. |
| 5 (CT) | Oscillator Timing Capacitor | Connects to external capacitor; sets oscillator frequency with RT (pin 6). |
| 6 (RT) | Oscillator Timing Resistor | Connects to external resistor; defines oscillator frequency with CT (pin 5); range: 1.8–500 kΩ. |
| 7 (GND) | Analog Ground Reference | Common return for internal reference, amplifiers, and comparator circuits. |
| 8 (C1) | Output 1 Collector | Open-collector output for Q1; used in single-ended or push-pull configurations. |
| 9 (E1) | Output 1 Emitter | Emitter of internal transistor Q1; enables emitter-follower or common-emitter drive. |
| 10 (C2) | Output 2 Collector | Open-collector output for Q2; complements C1 in push-pull operation. |
| 11 (E2) | Output 2 Emitter | Emitter of internal transistor Q2; supports symmetrical drive in bridge topologies. |
| 12 (REF) | 5.0 V Reference Output | Provides stable 5 V ±1% for external circuit biasing or ADC reference. |
| 13 (OUTPUT CTRL) | Mode Selection Control | GND = single-ended/parallel; VREF = push-pull - configures output topology without firmware. |
| 14 (VCC) | Power Supply Input | Accepts 7–36 V; powers internal regulators, amplifiers, and output stages. |
| 15 (2IN+) | Error Amp 2 Non-Inverting Input | Supports secondary regulation loop (e.g., over-current protection or auxiliary rail monitoring). |
| 16 (2IN−) | Error Amp 2 Inverting Input | Accepts reference or sensed signal for second error amplifier; enables dual-loop control. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent error amplifiers | Enables simultaneous voltage and current regulation loops without external op-amps. |
| Hardware-selectable output mode | OUTPUT CTRL pin eliminates need for configuration registers or microcontroller I/O. |
| On-chip oscillator with master/slave support | Reduces component count vs. external clock generators; allows synchronization across multiple controllers. |
| Dead-time control comparator | Prevents cross-conduction in half/full-bridge topologies without external timing networks. |
| 200 mA TR output driver | Directly interfaces with high-side gate drivers or discrete MOSFETs without level-shifting. |
Applications
| Laptop Backlight Inverter | Industrial SMPS Controller |
|---|---|
Use Scenario: Driving CCFL or LED backlight in portable computing devices requiring adjustable brightness and high efficiency. IC Role / Device Role / Timing Role: PWM controller generating variable-duty-cycle gate signals synchronized to lamp resonance frequency. Use Value: Dual error amps enable closed-loop brightness control and lamp current regulation; 5 V reference stabilizes analog dimming circuitry. | Use Scenario: Regulating 12 V or 24 V DC output from rectified AC or wide-range DC input in factory automation power modules. IC Role / Device Role / Timing Role: Core voltage-mode controller managing feedback, oscillator timing, and complementary output drive for MOSFET half-bridge. Use Value: Dead-time control prevents shoot-through; SOIC-16 package supports automated PCB assembly and thermal management up to 85°C ambient. |
| USB-C PD-Compatible Charger | LED Driver for Street Lighting |
Use Scenario: Implementing constant-voltage/constant-current regulation in compact AC-DC adapters compliant with USB Power Delivery specifications. IC Role / Device Role / Timing Role: Primary-side controller executing PWM modulation, output voltage sensing, and over-current protection via dual error amplifiers. Use Value: ±1% reference ensures tight CV regulation; 36 V max VCC supports wide-input offline designs without pre-regulator. | Use Scenario: Controlling high-power LED strings in outdoor lighting systems requiring long-life, high-reliability constant-current regulation. IC Role / Device Role / Timing Role: Constant-current controller using one error amp for LED current feedback and second for thermal derating or input voltage monitoring. Use Value: Push-pull output mode drives external high-side N-channel MOSFETs efficiently; 200 mA TR output simplifies gate driving in high-current stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL494CN | 4.95 V reference (±2%), no integrated dead-time control comparator, fixed 1.25 V internal reference for error amps | Lacks hardware-based dead-time adjustment; requires external circuitry for push-pull safety | Choose TL494CN only if legacy design reuse or cost sensitivity outweighs need for precise dead-time control. |
| UC3845BD1R2G | Current-mode controller, single error amp, 250 kHz max frequency, no dual-output capability | Designed for flyback/forward converters; not suitable for push-pull or dual-loop regulation | Select UC3845BD1R2G for low-cost, single-loop current-mode SMPS where dual outputs or dead-time control are unnecessary. |
Compared with TL494CN and UC3845BD1R2G, the AZ7500CP-E1 uniquely integrates dead-time control, dual error amplifiers, and 5.0 V ±1% reference in SOIC-16 - making it optimal for industrial push-pull SMPS and multi-loop regulated inverters where timing safety and precision feedback are critical.
Availability
AZ7500CP-E1 is available at Aetrix Electronics and suitable for laptop backlight inverters, industrial SMPS controllers, and USB-C PD-compatible chargers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AZ7500CP-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
BCD Semiconductor Manufacturing Limited is a Shanghai-based analog and power IC designer specializing in high-reliability, cost-optimized mixed-signal solutions for power management and industrial applications.
The AZ7500C product line targets discrete-based switching power supplies requiring hardware-configurable PWM control, dual-loop regulation, and robust thermal performance in SOIC packages - optimized for cost-sensitive industrial and consumer power systems.
FAQ
What is the maximum allowable supply voltage for AZ7500CP-E1?
The absolute maximum supply voltage (VCC) is 40 V, but recommended operating range is 7–36 V per datasheet Section 4. Exceeding 36 V risks violating recommended conditions and may reduce reliability, especially at high ambient temperatures. Operation above 36 V requires derating analysis based on junction temperature limits (TJ ≤ 150°C) and thermal impedance (RθJA = 73°C/W).
Can AZ7500CP-E1 be used in current-mode control topologies?
No - AZ7500CP-E1 is strictly a voltage-mode PWM controller. Its architecture uses an internal sawtooth oscillator ramp compared against error amplifier output, not a current-sense ramp. Current-mode operation would require external slope compensation and is not supported by internal circuitry; use UC384x-series controllers instead for native current-mode designs.
How does OUTPUT CTRL pin selection affect output behavior?
When OUTPUT CTRL (pin 13) is grounded, outputs C1/E1 and C2/E2 operate in single-ended or parallel mode - both transistors switch identically. When tied to REF (5 V), they operate in complementary push-pull mode with dead-time enforced by the DTC comparator. This hardware-selectable mode eliminates software configuration and ensures deterministic timing behavior.
Is the 5 V reference output (pin 12) buffered and load-capable?
Yes - the REF pin delivers up to 10 mA with ±1% accuracy across −40°C to +85°C, as specified in Electrical Characteristics Table (Page 5). It is internally buffered and designed to drive external circuitry such as optocoupler LEDs, ADC references, or bias networks without external amplification.
AZ7500CP-E1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 7V ~ 36V
- Frequency - Switching:
- 1kHz ~ 200kHz
- Duty Cycle (Max):
- 45%
- Synchronous Rectifier:
- No
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- Enable
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-DIP
AZ7500CP-E1 FAQ
1.How can I place an order for AZ7500CP-E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ7500CP-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 AZ7500CP-E1 reliable?
The price and inventory of AZ7500CP-E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ7500CP-E1 is usually 5 days.
3.What payment methods are accepted for AZ7500CP-E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ7500CP-E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ7500CP-E1?
AZ7500CP-E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ7500CP-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 AZ7500CP-E1?
For technical support, including AZ7500CP-E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ7500CP-E1 requirements.
6.How does Aetrix verify that AZ7500CP-E1 is sourced from the original manufacturer or authorized distributors?
All AZ7500CP-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 AZ7500CP-E1 meets industry standards.
7.What is the process for return or replacement of AZ7500CP-E1?
All AZ7500CP-E1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ7500CP-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 AZ7500CP-E1 part is unused and in its original packaging.
Return procedure for AZ7500CP-E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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