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Diodes Incorporated AP61203Z6-7
- Part No.:
- AP61203Z6-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-563, SOT-666
- Datasheet:
-
AP61203Z6-7.pdf
- Description:
- IC REG BUCK ADJ 2A SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:783
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Product details
Overview
AP61203Z6-7 from Diodes Incorporated is a 2A synchronous buck converter with 2.3V–5.5V input, 0.6V–3.6V adjustable output, 1.3MHz switching frequency, 19μA quiescent current in PFM mode, and integrated 110mΩ/80mΩ MOSFETs. It delivers high-efficiency DC-DC conversion for FPGA, DSP, and network camera power rails.
For engineers reviewing the AP61203Z6-7 datasheet, AP61203Z6-7 pinout, AP61203Z6-7 application, or AP61203Z6-7 equivalent, this page provides verified functional identity, SOT563 package mapping, PG-enabled operation mode, thermal shutdown behavior, and real-world load transient performance data.
Technical Context
The AP61203Z6-7 uses Constant On-Time (COT) control to achieve fast transient response and stable loop behavior without external compensation. Its internal reference is 0.6V ±2%, and it implements forced PWM mode-ensuring fixed-frequency operation across all load conditions.
It integrates high-side and low-side MOSFETs (110mΩ/80mΩ), supports soft-start (0.5ms), and features an open-drain Power-Good (PG) output with 55μs rise delay, 90–95% undervoltage detection thresholds, and 105–110% overvoltage fault thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.3V to 5.5V - supports single-cell Li-ion, USB, and 3.3V/5V distributed bus inputs. |
| IOUT Max | 2A continuous - sufficient for core voltage supply of mid-tier FPGAs and SoCs. |
| fSW | 1.3MHz typical at VIN=5V, VOUT=1.8V - enables compact LC filter design with ≤1μH inductor. |
| IQ (PFM) | 19μA - minimizes standby power loss in always-on consumer and IoT endpoints. |
| RDS(ON) HS/L | 110mΩ / 80mΩ - reduces conduction loss and improves full-load efficiency up to 89% at light loads. |
| PG Thresholds | UV fall: 90%, UV rise: 95%, OV rise: 110%, OV fall: 105% - ensures reliable system-level power sequencing and fault reporting. |
| Soft-Start | 0.5ms - prevents output overshoot and inrush current during power-up in sensitive digital loads. |
Pinout & Package
AP61203Z6-7 is housed in a thermally enhanced SOT563 package (1.6mm × 1.6mm × 0.55mm, 6-pin), optimized for space-constrained PCB layouts and moderate-power density applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB | Feedback sensing input | Monitors output via resistive divider; sets regulation point with 0.6V reference voltage. |
| GND | Power ground reference | Common return path for IC logic, power switches, and output capacitor; must be low-impedance. |
| VIN | Main power input | Supplies both control circuitry and power MOSFETs; requires ≥10µF ceramic bypass capacitance. |
| SW | Switching node output | Drives external inductor; carries high di/dt; layout critical to minimize EMI and voltage spikes. |
| EN | Enable control input | Logic-compatible (0.83V low / 0.91V high); controls startup/shutdown and soft-start initiation. |
| PG | Open-drain Power-Good indicator | Signals valid regulation (high after 55μs delay when VOUT ∈ [95%,105%]); pulled up internally to VIN via 5MΩ. |
Key Features
| Feature | Design Value |
|---|---|
| Forced PWM operation | Eliminates frequency variation under load changes-critical for EMI-sensitive RF and audio subsystems. |
| Integrated power MOSFETs | 110mΩ HS + 80mΩ LS reduce BOM count and PCB area; no external gate drivers required. |
| Power-Good (PG) output | Enables safe system power sequencing and processor reset assertion in FPGA/DSP applications. |
| Comprehensive protection | Includes UVLO (1.84V fall), VIN OVP (6.3V), peak/valley current limits, and thermal shutdown (160°C). |
| Low-noise COT control | Delivers <20mVpp output ripple at 2A load and fast load transient recovery (<100μs to settle within ±2%). |
Applications
| 5V Distributed Power Bus | FPGA Core Supply |
|---|---|
Use Scenario: Local 3.3V or 2.5V rail generation from a shared 5V backplane in industrial controllers. IC Role / Device Role / Timing Role: Primary step-down regulator delivering clean, regulated power to microcontroller peripherals and I/O banks. Use Value: 89% efficiency at 5mA light load extends standby time; PG signal synchronizes peripheral enable timing. |
Use Scenario: Providing 1.2V/1.8V core voltage to Xilinx Artix-7 or Intel MAX 10 FPGA on compact edge AI modules. IC Role / Device Role / Timing Role: High-current, low-noise DC-DC converter with fast transient response for dynamic logic switching. Use Value: 1.3MHz switching allows use of 1μH inductor; soft-start prevents configuration corruption during FPGA boot. |
| Network Video Camera | Wireless Router Baseband |
Use Scenario: Powering image sensor, ISP, and Wi-Fi SoC in PoE-powered IP cameras with strict thermal envelope. IC Role / Device Role / Timing Role: Main PMIC for analog front-end and digital processing blocks requiring tight voltage tolerance. Use Value: Integrated MOSFETs eliminate external driver losses; thermal shutdown protects against enclosure overheating. |
Use Scenario: Generating 1.1V CPU core and 1.8V memory rails in dual-band 802.11ac routers with dense component layout. IC Role / Device Role / Timing Role: Efficient, footprint-optimized buck converter supporting burst-mode traffic and sleep-state power gating. Use Value: 19μA IQ enables low-power listening modes; PG output triggers MAC-layer wake-up coordination. |
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 | 2.5V–5.5V input, 2A, 1.5MHz, no PG, 25μA IQ, QFN-8 package | Lacks PG output and operates in auto-PFM/PWM; less suitable for sequenced power systems | Choose when board space allows QFN-8 and PG signaling is unnecessary. |
| TPS62231DRVR | 2.05V–6.0V input, 2A, 3.6MHz, PG output, 17μA IQ, WSON-6 package | Higher fSW enables smaller inductors but increases switching loss above 1A; tighter VFB accuracy (±1%) | Prefer for ultra-compact designs where 3.6MHz operation and ±1% regulation outweigh thermal trade-offs. |
Compared with MP2143GJ-Z and TPS62231DRVR, AP61203Z6-7 offers balanced performance: guaranteed forced PWM mode for predictable EMI, integrated PG with precise thresholds, and optimal thermal resistance (θJA = 141°C/W) in SOT563-making it ideal for thermally constrained consumer and embedded applications.
Availability
AP61203Z6-7 is available at Aetrix Electronics and suitable for FPGA power supplies, network video cameras, and wireless router baseband circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AP61203Z6-7 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.
AP61203Z6-7 belongs to the AP612xx family of low-IQ synchronous buck converters designed specifically for space- and efficiency-critical consumer, computing, and industrial point-of-load applications.
FAQ
What is the function of the PG pin on AP61203Z6-7?
The PG (Power-Good) pin is an open-drain output that signals valid output regulation. It remains low during soft-start and when VOUT falls below 90% or rises above 110% of its set value. After VOUT stabilizes within ±5%, PG pulls high after a 55μs delay, using an internal 5MΩ pull-up to VIN.
Does AP61203Z6-7 support adjustable output voltage?
Yes. Output voltage is set externally via a resistive divider from VOUT to GND and FB. With a 0.6V ±2% internal reference, common configurations include 1.2V (R1=200kΩ, R2=100kΩ) and 1.8V (R1=300kΩ, R2=100kΩ). The FB pin draws only 100nA, minimizing divider current error.
How does AP61203Z6-7 handle overload or short-circuit conditions?
It employs valley current limiting and thermal shutdown. Under short-circuit, peak current limit (2.4–3.2A) and valley current limit (≥2.3A) trigger cycle-by-cycle shutdown. If junction temperature exceeds +160°C, thermal shutdown activates with +30°C hysteresis, disabling switching until safe cooldown.
Can AP61203Z6-7 operate from a 3.3V input to generate 1.8V at 2A?
Yes. At VIN=3.3V, VOUT=1.8V, and IOUT=2A, typical efficiency is 87% (per Figure 11). The device maintains regulation across the full input range (2.3V–5.5V), and its COT architecture ensures stable operation without external compensation components.
AP61203Z6-7 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
AP61203Z6-7 FAQ
1.How can I place an order for AP61203Z6-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP61203Z6-7 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 AP61203Z6-7 reliable?
The price and inventory of AP61203Z6-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP61203Z6-7 is usually 5 days.
3.What payment methods are accepted for AP61203Z6-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP61203Z6-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP61203Z6-7?
AP61203Z6-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP61203Z6-7 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 AP61203Z6-7?
For technical support, including AP61203Z6-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP61203Z6-7 requirements.
6.How does Aetrix verify that AP61203Z6-7 is sourced from the original manufacturer or authorized distributors?
All AP61203Z6-7 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 AP61203Z6-7 meets industry standards.
7.What is the process for return or replacement of AP61203Z6-7?
All AP61203Z6-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP61203Z6-7, 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 AP61203Z6-7 part is unused and in its original packaging.
Return procedure for AP61203Z6-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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