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Diodes Incorporated AP3586BMTR-G1
- Part No.:
- AP3586BMTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- DC DC Switching Controllers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP3586BMTR-G1.pdf
- Description:
- IC REG CTRLR BUCK 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,585
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Product details
Overview
AP3586BMTR-G1 from BCD Semiconductor is a fixed-frequency voltage-mode synchronous buck PWM controller designed for 5V/12V input systems delivering tightly regulated 0.8V output with ±1% reference accuracy, 300kHz switching, and integrated 12V bootstrap drivers supporting N-channel high-side MOSFETs. It enables compact, high-efficiency point-of-load supplies for DDR memory termination and graphics subsystems.
For engineers reviewing the AP3586BMTR-G1 datasheet, AP3586BMTR-G1 pinout, AP3586BMTR-G1 application, or AP3586BMTR-G1 equivalent, this controller's fast transient response (10MHz GBW error amplifier), lossless RDS(ON)-based overcurrent protection, and built-in soft-start with 2.7ms ramp time are critical selection criteria in power supply design.
Technical Context
The AP3586BMTR-G1 implements a single-loop voltage-mode control architecture with an internal 0.8V reference and a 10MHz gain-bandwidth error amplifier driving a fixed 300kHz oscillator. Its adaptive shoot-through protection monitors UGATE and PHASE to prevent cross-conduction during MOSFET transitions.
It integrates dual gate drivers (±1.5A sink/source) with built-in bootstrap diode and supports start-up into pre-biased loads via controlled COMP/EN pin release. Protection functions include non-latched OVP (137.5% × VREF), hiccup-mode OCP using LGATE-based current sensing, and thermal shutdown at 160°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Control Mode | Voltage-mode PWM with single feedback loop - enables stable compensation using standard Type-II/III networks. |
| Switching Frequency | 300kHz (fixed) - balances efficiency, size, and EMI in mid-power DC-DC converters. |
| Reference Voltage | 0.8V ±1.5% (typ. 0.8V) - sets minimum output voltage; enables 1.2V, 1.5V, 1.8V, and 2.5V rails via resistor divider. |
| Error Amplifier GBW | 10MHz - supports >100kHz closed-loop bandwidth for sub-10µs load transient recovery. |
| Max Duty Cycle | 82% - limits maximum output to 82% of VIN, ensuring sufficient off-time for accurate RDS(ON) current sensing. |
| OCP Threshold | Programmable via ROCSET resistor - uses 21.5µA internal current source and low-side MOSFET RDS(ON) for lossless current limiting. |
| Soft-Start Time | 2.7ms - digitally ramped internal SS signal prevents inrush current during power-up. |
Pinout & Package
AP3586BMTR-G1 is packaged in PSOP-8 (exposed pad), optimized for thermal dissipation in high-current buck applications. The exposed pad must be soldered directly to a large GND copper area on PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap capacitor node | Provides floating 12V bias for high-side gate driver; requires 0.1µF ceramic cap to PHASE. |
| UGATE | High-side MOSFET gate driver output | Drives N-channel upper FET; monitored for adaptive shoot-through protection. |
| GND | Power and signal ground reference | Low-impedance return path for all currents; exposed pad must connect to PCB GND plane. |
| LGATE/OCSET | Low-side gate driver + OCP programming input | Drives lower FET; ROCSET resistor here sets current limit threshold using RDS(ON). |
| VCC | Bias supply input | Accepts 5V or 12V input; requires local 1µF bypass capacitor to GND. |
| FB | Inverting input of error amplifier | Connects to resistor divider from output; sets regulated voltage via 0.8V reference. |
| COMP/EN | Compensation node & enable control | Pull below 0.3V to disable; external RC network sets loop stability and soft-start timing. |
| PHASE | Switch node | Connects to source of high-side and drain of low-side MOSFET; high dV/dt node requiring tight layout. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bootstrap diode | Eliminates external diode, reducing BOM count and layout complexity in high-side drive path. |
| Lossless RDS(ON) current sensing | Enables accurate, temperature-compensated overcurrent protection without sense resistor power loss. |
| Start-up into pre-biased output | Allows safe activation when output rail is already charged - essential for hot-swap and multi-rail sequencing. |
| Adaptive shoot-through protection | Monitors UGATE and PHASE timing to dynamically prevent simultaneous conduction, improving reliability. |
| Non-latched overvoltage protection | Discharges output via low-side FET when VOUT exceeds 1.375×0.8V; resumes operation automatically after fault clears. |
Applications
| DDR/2/3 SDRAM Bus Termination | PCI/AGP Graphics Card Core Supply |
|---|---|
|
Use Scenario: Providing stable 1.25V or 1.5V termination voltage for DDR2/DDR3 memory buses under dynamic load changes. IC Role / Device Role / Timing Role: Synchronous buck controller regulating termination rail with fast transient response to match memory data strobes. Use Value: 10MHz error amplifier GBW ensures <50µs recovery from 0→3A load step, maintaining SSTL-2 compliance. |
Use Scenario: Generating clean 1.0V–1.3V core voltage for GPU logic on PCI Express or AGP add-in cards. IC Role / Device Role / Timing Role: Primary voltage regulator with integrated gate drivers enabling discrete MOSFET solutions. Use Value: 300kHz fixed frequency allows small external inductors (<2.2µH) while maintaining >85% efficiency at 10A. |
| Cable Modem Power Management | Industrial FPGA I/O Bank Supply |
|
Use Scenario: Delivering 1.8V or 2.5V I/O supply in space-constrained cable modem designs with strict thermal limits. IC Role / Device Role / Timing Role: Compact, thermally robust buck controller supporting 40–85°C ambient operation. Use Value: PSOP-8 package with exposed pad achieves θJA = 50°C/W, enabling 12W dissipation without heatsink. |
Use Scenario: Powering configurable I/O banks in industrial FPGAs requiring precise 3.3V or adjustable rails. IC Role / Device Role / Timing Role: Programmable output controller with resistor-divider feedback and robust OVP/UVP. Use Value: 0.8V reference and 82% max duty cycle support outputs up to 9.8V from 12V input, covering wide I/O range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2307DN-LF-Z | Fixed 340kHz frequency; no built-in bootstrap diode; requires external diode; 0.925V reference. | Lacks pre-biased start-up and adaptive shoot-through protection; less robust in high-noise environments. | Preferred where higher frequency allows smaller magnetics but system-level layout can accommodate external diode. |
| RT8205AZSP | 300kHz operation; 0.6V reference; includes light-load pulse-skipping mode; no integrated boot diode. | Optimized for ultra-low quiescent current (1.2mA); lacks RDS(ON) OCP - requires external sense resistor. | Chosen for battery-powered or standby-sensitive applications where efficiency at light load outweighs BOM simplicity. |
Compared with MP2307DN-LF-Z and RT8205AZSP, AP3586BMTR-G1 offers superior integration (built-in boot diode, adaptive shoot-through, pre-biased start), tighter reference (0.8V ±1.5%), and lossless current sensing - making it optimal for cost-sensitive, thermally constrained, and noise-immune industrial and communications power designs.
Availability
AP3586BMTR-G1 is available at Aetrix Electronics and suitable for DDR memory termination, graphics card core supplies, and industrial FPGA I/O banks requiring stable component supply, RoHS-compliant packaging, and long-term lifecycle continuity.
Supply support for AP3586BMTR-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 China-based fabless analog IC designer specializing in high-performance power management, LED drivers, and mixed-signal products for consumer, computing, and industrial markets.
The AP3586 series belongs to BCD's synchronous buck controller product line, engineered specifically for cost-effective, high-density point-of-load regulation in graphics, memory, and broadband infrastructure applications.
FAQ
What is the recommended minimum output capacitance for AP3586BMTR-G1?
The datasheet specifies ≥220µF total output capacitance with ≤5mΩ ESR for stable 1.2V/10A operation. Ceramic + polymer hybrid configurations (e.g., 10×22µF X5R + 1×220µF polymer) are recommended to suppress both high-frequency ripple and load-step voltage deviation within ±25mV.
Can AP3586BMTR-G1 operate with a 3.3V input supply?
No - the absolute minimum VCC supply is 5V per Recommended Operating Conditions, and VIN input range is specified from 3.3V to 12V only for the power stage (not the controller bias). VCC must be externally supplied at 5V or 12V; 3.3V will not power the internal circuitry or enable gate drivers.
How does the LGATE/OCSET pin set overcurrent threshold?
A resistor ROCSET connects LGATE to GND. An internal 21.5µA current source flows through ROCSET, generating a voltage that offsets the low-side MOSFET RDS(ON) sense voltage. When (ILOAD × RDS(ON)) + (21.5µA × ROCSET) ≥ 0.3V, OCP triggers - enabling programmable, temperature-aware current limiting without a sense resistor.
Is AP3586BMTR-G1 pin-compatible with AP3586AMTR-G1?
Yes - both share identical PSOP-8 pinout, electrical characteristics, and functional block diagram. The only difference is reference voltage: AP3586AMTR-G1 uses 0.6V, while AP3586BMTR-G1 uses 0.8V. Feedback resistor values must be recalculated accordingly; all other external components remain unchanged.
AP3586BMTR-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
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 5V ~ 12V
- Frequency - Switching:
- 300kHz
- Duty Cycle (Max):
- 82%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- Enable, Phase Control
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AP3586BMTR-G1 FAQ
1.How can I place an order for AP3586BMTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP3586BMTR-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 AP3586BMTR-G1 reliable?
The price and inventory of AP3586BMTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3586BMTR-G1 is usually 5 days.
3.What payment methods are accepted for AP3586BMTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3586BMTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP3586BMTR-G1?
AP3586BMTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP3586BMTR-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 AP3586BMTR-G1?
For technical support, including AP3586BMTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3586BMTR-G1 requirements.
6.How does Aetrix verify that AP3586BMTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP3586BMTR-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 AP3586BMTR-G1 meets industry standards.
7.What is the process for return or replacement of AP3586BMTR-G1?
All AP3586BMTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3586BMTR-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 AP3586BMTR-G1 part is unused and in its original packaging.
Return procedure for AP3586BMTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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