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Diodes Incorporated AP61201Z6-7
- Part No.:
- AP61201Z6-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-563, SOT-666
- Datasheet:
-
AP61201Z6-7.pdf
- Description:
- IC REG BUCK ADJ 2A SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:2,355
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Product details
Overview
AP61201Z6-7 from Diodes Incorporated is a 2.3V–5.5V input, 2A synchronous buck converter in SOT563 package, integrating 110mΩ high-side and 80mΩ low-side MOSFETs. It delivers regulated output voltages from 0.6V to 3.6V with 0.6V ±2% reference, 19μA quiescent current in PFM mode, and 1.3MHz switching frequency at 5VIN/1.8VOUT. It serves as a primary point-of-load regulator for FPGA/DSP core supplies in space-constrained consumer and industrial systems.
For engineers reviewing the AP61201Z6-7 datasheet, AP61201Z6-7 pinout, AP61201Z6-7 application, or AP61201Z6-7 equivalent, this page details its Constant On-Time (COT) control architecture, PFM-only operation mode, thermal/overvoltage protection, and design-specific feedback and enable interface behavior - all critical for stable low-IQ DC-DC implementation.
Technical Context
The AP61201Z6-7 implements Constant On-Time (COT) control with input-voltage–dependent on-time calculation (tON = VOUT/(VIN × fSW)) and fixed 70ns minimum off-time, enabling fast transient response without external compensation. Its internal 0.6V reference feeds a precision error amplifier that compares FB voltage against regulation threshold.
This variant operates exclusively in Pulse Frequency Modulation (PFM) mode - reducing switching frequency under light load to maintain up to 89% efficiency at 5mA - and lacks Power-Good (PG) functionality, distinguishing it from AP61202/AP61203. It includes undervoltage lockout (1.84V falling threshold), VIN overvoltage protection (6.3V rising), and thermal shutdown at +160°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.3V to 5.5V - supports single-cell Li-ion, USB 5V, and 3.3V distributed rails without pre-regulation. |
| IOUT Max | 2A continuous - sufficient for FPGA I/O banks or dual-core microcontroller cores with dynamic current bursts. |
| VFB Reference | 0.600V ±2% - enables accurate output setting via external resistor divider (e.g., 200kΩ/100kΩ for 1.8V). |
| IQ (PFM) | 19μA typical - minimizes standby power loss in battery-backed or always-on edge devices. |
| fSW | 1.3MHz typical at 5VIN/1.8VOUT - allows use of compact 1μH inductors and reduces output ripple without EMI filtering overhead. |
| RDS(ON) HS/LG | 110mΩ / 80mΩ - integrated MOSFETs eliminate external switch losses and simplify layout versus controller+external FET solutions. |
| Protection | UVLO (1.84V), VIN OVP (6.3V), peak/valley current limit, thermal shutdown - ensures robust operation across line and load transients. |
Pinout & Package
SOT563 package: 1.6mm × 1.6mm × 0.55mm body, 0.5mm pitch, thermally enhanced pad, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (Pin 1) | Feedback sensing input | Connects to resistor divider midpoint; regulates output by comparing against 0.6V internal reference - requires <10pF capacitance for stability. |
| GND (Pin 2) | Power ground reference | Primary return path for high-current switching loop; must be tied directly to thermal pad and input/output capacitors' ground planes. |
| VIN (Pin 3) | Main power input | Supplies IC bias and high-side/low-side MOSFETs; requires ≥10μF ceramic bypass capacitor placed within 2mm of pin. |
| SW (Pin 4) | Switching node output | Drives external inductor; carries high di/dt current - demands short, wide copper trace to minimize EMI and voltage spikes. |
| EN (Pin 5) | Enable control input | Logic-compatible digital input (VEN_H = 0.91V typ); asserts soft-start when pulled >0.91V; draws only 0.1μA in shutdown. |
| OUT (Pin 6) | Output voltage rail | Direct connection to load; not internally connected to GND - may float if unused, but requires feed-forward capacitor (C3 = 33pF) if left NC. |
Key Features
| Feature | Design Value |
|---|---|
| Constant On-Time (COT) control | Enables zero-phase-margin compensation-free design with <10μs load-step response and <2% output deviation under 1A step. |
| 19μA quiescent current (PFM) | Extends battery life in always-on IoT sensors - e.g., adds <1.5 years runtime to a 200mAh coin cell powering 5mA sleep-mode system. |
| Integrated 110mΩ/80mΩ MOSFETs | Eliminates external power switches and gate drivers, reducing BOM count by 4 components and PCB area by >30% vs discrete solutions. |
| 0.5ms internal soft-start | Prevents inrush current into output capacitors - limits peak input current to <3A during startup, easing input supply stress. |
| Full protection suite | UVLO, VIN OVP, thermal shutdown, and valley/peak current limiting ensure fault resilience without external circuitry in harsh environments. |
Applications
| Consumer Point-of-Load | FPGA Core Supply |
|---|---|
|
Use Scenario: Powering SoC subsystems in smart home hubs requiring low-noise, always-on 1.2V/1.8V rails. IC Role / Device Role / Timing Role: Primary buck regulator delivering tightly regulated core voltage with fast transient recovery during burst-mode processing. Use Value: 19μA IQ extends standby time; COT control maintains <±1.5% output deviation during 100mA–2A load steps. |
Use Scenario: Generating configurable 0.85V–1.2V core voltage for Xilinx Artix-7 or Intel MAX 10 FPGA logic arrays. IC Role / Device Role / Timing Role: High-efficiency, compact DC-DC converter replacing larger modules to meet tight board area constraints in embedded vision modules. Use Value: Integrated MOSFETs and 1.3MHz fSW allow 1μH inductor and 22μF total output capacitance - reducing solution size to <12mm². |
| Wireless Router CPU Rail | Industrial Sensor Node |
|
Use Scenario: Supplying 3.3V I/O and 1.1V CPU rails in 802.11ac dual-band routers with thermal limitations. IC Role / Device Role / Timing Role: Secondary buck stage stepping down 5V bus to processor core voltage, operating in PFM during idle periods. Use Value: 89% efficiency at 5mA light load cuts standby power by 40% vs PWM-only converters; thermal shutdown protects during airflow blockage. |
Use Scenario: Battery-powered environmental sensor node with BLE radio, requiring ultra-low IQ and reliable start-up across -40°C to +85°C. IC Role / Device Role / Timing Role: Main power regulator converting 3.6V Li-SOCl₂ cell to 1.8V MCU rail, leveraging UVLO and thermal protection for field reliability. Use Value: -40°C to +85°C operating range and 1.84V UVLO prevent brownout resets in cold storage deployments; 0.1μA shutdown current preserves shelf life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2143GJ-Z | 3A rated, 2.5V–5.5V input, 1.2MHz fSW, no PFM mode - higher IQ (350μA) and fixed-frequency PWM only. | Lacks light-load efficiency optimization; better suited for constant-load applications like motor drivers. | Select when higher output current headroom or strict EMI control via fixed frequency is required - not for battery longevity. |
| TPS62231DRVR | 2A, 2.05V–6V input, 3.8MHz fSW, PFM/PWM auto-mode, 17μA IQ, but requires external compensation network. | Higher switching frequency enables smaller passives but increases layout sensitivity and EMI filtering needs. | Choose for ultra-compact designs where 3.8MHz permits 0.47μH inductors - accept added design complexity for size reduction. |
Compared with MP2143GJ-Z and TPS62231DRVR, the AP61201Z6-7 uniquely balances ultra-low IQ, integrated power stages, and COT simplicity - making it optimal for cost-sensitive, space-constrained, battery-aware applications where light-load efficiency and ease of use outweigh raw current headroom or EMI predictability.
Availability
AP61201Z6-7 is available at Aetrix Electronics and suitable for consumer electronics, industrial sensor nodes, and wireless infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AP61201Z6-7 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP6120x series targets space- and power-constrained embedded systems, delivering high-efficiency, fully integrated buck conversion with minimal external components for rapid point-of-load deployment.
FAQ
What is the function of the OUT pin on AP61201Z6-7?
The OUT pin (Pin 6) is the output voltage rail terminal. In AP61201Z6-7, it connects directly to the load and is not internally tied to GND. If unused, it must be left floating - but a 33pF feed-forward capacitor (C3) is mandatory between OUT and FB to stabilize the control loop per datasheet Figure 2.
Does AP61201Z6-7 support adjustable output voltage?
Yes. Output voltage is set externally via a resistive divider from VOUT to GND, with FB connected to the divider midpoint. Using the 0.6V reference, VOUT = 0.6V × (1 + R1/R2); common values include 200kΩ (R1) and 100kΩ (R2) for 1.8V output, as shown in Figure 1.
How does the enable (EN) pin behave during power sequencing?
EN is a logic-level input with 0.91V typical high threshold and 0.83V falling low threshold. When pulled above 0.91V, the device initiates a 0.5ms internal soft-start, ramping VOUT linearly to avoid overshoot. Pulling EN below 0.83V discharges the soft-start capacitor and shuts down the regulator, drawing only 0.1μA.
Is AP61201Z6-7 qualified for automotive applications?
No. AP61201Z6-7 is not AEC-Q100 qualified. Diodes Incorporated offers automotive-grade variants (e.g., AP61201Q) with PPAP capability, IATF 16949 manufacturing, and extended temperature validation - but AP61201Z6-7 is specified for commercial/industrial use only (-40°C to +85°C ambient).
AP61201Z6-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 3.6V
- Current - Output:
- 2A
- Frequency - Switching:
- 1.3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
AP61201Z6-7 FAQ
1.How can I place an order for AP61201Z6-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP61201Z6-7 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 AP61201Z6-7 reliable?
The price and inventory of AP61201Z6-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP61201Z6-7 is usually 5 days.
3.What payment methods are accepted for AP61201Z6-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP61201Z6-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP61201Z6-7?
AP61201Z6-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP61201Z6-7 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 AP61201Z6-7?
For technical support, including AP61201Z6-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP61201Z6-7 requirements.
6.How does Aetrix verify that AP61201Z6-7 is sourced from the original manufacturer or authorized distributors?
All AP61201Z6-7 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 AP61201Z6-7 meets industry standards.
7.What is the process for return or replacement of AP61201Z6-7?
All AP61201Z6-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP61201Z6-7, 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 AP61201Z6-7 part is unused and in its original packaging.
Return procedure for AP61201Z6-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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