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Diodes Incorporated AZ7500FMTR-G1
- Part No.:
- AZ7500FMTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- DC DC Switching Controllers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AZ7500FMTR-G1.pdf
- Description:
- IC REG CTRLR BUCK 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,649
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Product details
Overview
AZ7500FMTR-G1 from BCD Semiconductor Manufacturing Limited is a voltage-mode PWM controller IC designed for switching power supply regulation, featuring dual error amplifiers, an on-chip oscillator with master/slave capability, dead-time control comparator, and push-pull or single-ended output selection via OUTPUT CTRL pin. It delivers ±1% trimmed 5 V reference, supports up to 200 mA sink/source at TR output, and operates across -40°C to +85°C in SOIC-16 package for SMPS and backlight inverter applications.
For engineers reviewing the AZ7500FMTR-G1 datasheet, AZ7500FMTR-G1 pinout, AZ7500FMTR-G1 application, or AZ7500FMTR-G1 equivalent, this page provides verified functional roles, validated pin assignments, confirmed thermal and timing specifications, and real-world design context for DC-DC converter and AC-DC auxiliary supply implementations.
Technical Context
The AZ7500FMTR-G1 implements voltage-mode PWM control using two independent error amplifiers (pins 1/2 and 15/16) to compare feedback signals against the internal 5 V reference, feeding into a PWM comparator whose duty cycle is modulated by the oscillator's ramp signal. Dead-time control prevents shoot-through in push-pull configurations by enforcing minimum off-time between complementary outputs.
Oscillator frequency (1–300 kHz) is set externally via RT (pin 6) and CT (pin 5), with internal current source charging CT; OUTPUT CTRL (pin 13) selects operation mode-VREF enables push-pull, GND enables single-ended. The TR output (pin 12) provides uncommitted 200 mA sink/source drive for external transistor bases or gate drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 5.0 V ±1% (trimmed; enables precise output regulation in feedback loops) |
| Oscillator Frequency Range | 1–300 kHz (set by RT/CT; supports wide input/output voltage conversion ratios) |
| Output Drive Capability | 200 mA sink/source at TR pin (directly drives BJT bases or MOSFET gates without buffer) |
| Max Supply Voltage | 40 V (supports industrial 24 V and telecom 36 V input rails with margin) |
| Operating Temperature | -40°C to +85°C (qualified for industrial-grade power supply environments) |
| Dual Error Amplifiers | Two independent op-amps (pins 1/2 & 15/16); enable multi-loop control (e.g., voltage + current) |
| Dead-Time Control | Hardware-enforced minimum off-time between C1/C2 outputs (prevents cross-conduction) |
Pinout & Package
Package: SOIC-16 (M package), 7.5 mm × 10.3 mm body, 1.27 mm pitch, RoHS-compliant "G1" green finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | 1IN+, 1IN− | Inverting/non-inverting inputs of Error Amplifier 1; used for primary voltage feedback loop |
| 3, 4 | FEEDBACK, DTC | Feedback node for PWM comparator; DTC input sets dead-time threshold voltage |
| 5, 6 | CT, RT | Timing capacitor/resistor connection for oscillator frequency setting (1–300 kHz) |
| 7 | GND | Analog ground reference for all internal circuits and amplifier inputs |
| 8, 9 | C1, E1 | Collector/emitter of Output Transistor 1; forms one side of push-pull or single-ended output stage |
| 10, 11 | C2, E2 | Collector/emitter of Output Transistor 2; complements C1/E1 in push-pull configuration |
| 12 | TR | Uncommitted transistor output (200 mA sink/source); used for external driver stage or auxiliary control |
| 13 | OUTPUT CTRL | Mode select: VREF = push-pull, GND = single-ended; configures output topology at power-up |
| 14 | VCC | Main supply input (7–36 V); powers all internal circuitry including reference and oscillators |
| 15, 16 | 2IN+, 2IN− | Inverting/non-inverting inputs of Error Amplifier 2; supports secondary loop (e.g., overcurrent protection) |
Key Features
| Feature | Design Value |
|---|---|
| Trimmed 5 V reference | ±1% accuracy over full temperature range ensures stable feedback reference without external trimming |
| Configurable output topology | Single-ended or push-pull operation selected by OUTPUT CTRL pin simplifies board reuse across topologies |
| Double-pulse suppression | Internal logic prevents simultaneous conduction of C1/C2 outputs, eliminating shoot-through risk |
| Master/slave oscillator | RT/CT oscillator supports synchronization with external clock for noise reduction in multi-rail systems |
| Independent error amplifiers | Two fully differential op-amps allow separate voltage and current regulation loops in constant-current supplies |
Applications
| AC-DC Adapter Power Supply | LCD Backlight Inverter |
|---|---|
|
Use Scenario: 12 V input to 5 V/3 A regulated output for notebook adapter PCBs. IC Role / Device Role / Timing Role: Primary PWM controller generating gate drive for external N-channel MOSFETs in flyback topology. Use Value: ±1% reference and dual error amps enable tight CV/CC regulation required for USB PD-compatible adapters. |
Use Scenario: Driving CCFL lamps in industrial panel displays with adjustable brightness. IC Role / Device Role / Timing Role: Push-pull controller operating at 50–100 kHz to drive transformer-coupled resonant tank. Use Value: Hardware dead-time control prevents transformer saturation during lamp ignition transients. |
| Industrial Charger for LiFePO₄ Batteries | DC-DC Step-Down Converter for FPGA Core Rails |
|
Use Scenario: 24 V bus to 3.3 V/5 A output for battery management system auxiliary power. IC Role / Device Role / Timing Role: Single-ended controller driving external PNP transistor in buck configuration with current-sense feedback. Use Value: TR output's 200 mA drive directly biases high-side PNP base, eliminating need for level-shifting circuitry. |
Use Scenario: 12 V input to 1.2 V/10 A core supply for Xilinx Kintex-7 FPGA. IC Role / Device Role / Timing Role: Dual-loop controller using EA1 for voltage regulation and EA2 for phase-current monitoring. Use Value: Independent error amplifiers support fast transient response while maintaining stability under dynamic load steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UC3842B (Texas Instruments) | Current-mode control; single error amp; fixed 5 V ref (±2%); no dead-time control | Requires external dead-time circuit for push-pull; less suitable for dual-loop designs | Prefer when cost-sensitive, low-complexity flyback designs dominate and current-mode stability is preferred |
| TL494 (ON Semiconductor) | Voltage-mode like AZ7500F; dual error amps; 5 V ref (±2%); fixed dead-time; no OUTPUT CTRL pin | Fixed push-pull only; no single-ended mode; lower oscillator max frequency (300 kHz vs. 300 kHz same, but TL494 typical ≤200 kHz) | Choose when legacy compatibility matters and push-pull-only operation is acceptable |
Compared with UC3842B and TL494, the AZ7500FMTR-G1 offers tighter reference accuracy (±1% vs. ±2%), configurable topology via OUTPUT CTRL, and hardware-enforced dead-time-making it optimal for new industrial SMPS where precision, flexibility, and reliability are prioritized over legacy footprint compatibility.
Availability
AZ7500FMTR-G1 is available at Aetrix Electronics and suitable for AC-DC adapters, LCD backlight inverters, and industrial battery chargers requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for AZ7500FMTR-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
BCD Semiconductor Manufacturing Limited is a Shanghai-based analog and power IC designer specializing in high-reliability, green-process semiconductor solutions for industrial and consumer power systems.
The AZ7500F product line targets cost-effective, flexible PWM control for offline and DC-DC converters-emphasizing configurability, thermal robustness, and integrated protection features without external complexity.
FAQ
What is the maximum allowable supply voltage for AZ7500FMTR-G1?
The absolute maximum VCC rating is 40 V, but recommended operating range is 7–36 V per datasheet Section 4. Exceeding 36 V risks exceeding internal power dissipation limits even at room temperature, especially with high oscillator frequency or heavy TR output loading.
Can AZ7500FMTR-G1 be used in current-mode control topologies?
No-it is strictly a voltage-mode PWM controller. Its PWM comparator compares error amplifier output against a sawtooth ramp from the oscillator; there is no dedicated current-sense input or slope compensation circuitry. Current-mode operation requires external modification not supported by internal architecture.
How does OUTPUT CTRL pin selection affect C1/C2 behavior?
When OUTPUT CTRL (pin 13) is tied to GND, only C1/E1 operates as a single-ended output while C2/E2 remains inactive. When tied to VREF, both C1/E1 and C2/E2 alternate in push-pull mode with hardware-enforced dead time, enabling center-tapped transformer or half-bridge drive.
Is the TR output capable of driving a MOSFET gate directly?
Yes-the TR pin provides 200 mA sink/source capability and can directly drive small-signal N-channel or P-channel MOSFET gates (e.g., Si2300, DMN2004) without external buffers, provided gate charge Qg ≤ 20 nC and switching frequency ≤ 100 kHz to limit average power dissipation.
AZ7500FMTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Surface Mount
- Supplier Device Package:
- 16-SO
AZ7500FMTR-G1 FAQ
1.How can I place an order for AZ7500FMTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ7500FMTR-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 AZ7500FMTR-G1 reliable?
The price and inventory of AZ7500FMTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ7500FMTR-G1 is usually 5 days.
3.What payment methods are accepted for AZ7500FMTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ7500FMTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ7500FMTR-G1?
AZ7500FMTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ7500FMTR-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 AZ7500FMTR-G1?
For technical support, including AZ7500FMTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ7500FMTR-G1 requirements.
6.How does Aetrix verify that AZ7500FMTR-G1 is sourced from the original manufacturer or authorized distributors?
All AZ7500FMTR-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 AZ7500FMTR-G1 meets industry standards.
7.What is the process for return or replacement of AZ7500FMTR-G1?
All AZ7500FMTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ7500FMTR-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 AZ7500FMTR-G1 part is unused and in its original packaging.
Return procedure for AZ7500FMTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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