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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Diodes Incorporated AP61200Z6-7

Name: AP61200Z6-7
Brand: Diodes Incorporated
SKU: AP61200Z6-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP61200Z6-7

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: SOT-563, SOT-666

Datasheet:: AP61200Z6-7.pdf

Description:: IC REG BUCK ADJ 2A SOT563

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP61200Z6-7 from Diodes Incorporated is a 2A synchronous buck DC-DC converter with integrated 110mΩ high-side and 80mΩ low-side MOSFETs, operating from 2.3V to 5.5V input and delivering adjustable 0.6V–3.6V output. It uses Constant On-Time (COT) control for fast transient response and achieves up to 89% efficiency at 5mA light load in PFM mode. It targets FPGA/DSP core supplies and network camera power rails.

For engineers reviewing the AP61200Z6-7 datasheet, AP61200Z6-7 pinout, AP61200Z6-7 application, or AP61200Z6-7 equivalent, key selection criteria include its 19μA quiescent current in PFM, 1.3MHz switching frequency at 5V/1.8V, SOT563 package footprint, and absence of Power-Good functionality-distinguishing it from AP61202/AP61203 variants.

Technical Context

The AP61200Z6-7 implements Constant On-Time (COT) control with input-voltage-dependent on-time calculation (t_ON = V_OUT/(V_IN × f_SW)), enabling pseudo-fixed-frequency operation across input range. Its internal 0.6V ±2% reference sets output via external resistor divider.

It operates exclusively in Pulse Frequency Modulation (PFM) mode-unlike AP61201/AP61203's forced PWM-enabling ultra-low 19μA I_Q at no load and automatic frequency scaling from ~100kHz to 1.3MHz as load increases. No Power-Good (PG) pin is present; Pin 6 is OUT, not PG.

Key Specifications

Parameter	Value and Actual Design Meaning
VIN Range	2.3V to 5.5V DC - supports single-cell Li-ion, USB, and 3.3V/5V distributed bus inputs without pre-regulation
IOUT Max	2A continuous - sufficient for FPGA core, DSP I/O, or dual-core MCU power domains
VFB Accuracy	0.6V ±2% - enables precise output regulation (e.g., 1.8V ±36mV) using standard 1% resistors
IQ (PFM)	19μA typical - minimizes battery drain in always-on IoT sensors or standby subsystems
fSW	1.3MHz at VIN=5V, VOUT=1.8V - allows use of compact 1μH inductors and reduces EMI filter size
RDS(ON) HS/LG	110mΩ / 80mΩ - limits conduction loss to <240mW at 2A, supporting >85% full-load efficiency
Soft-Start	0.5ms fixed - prevents inrush current into downstream capacitors during power-up

Pinout & Package

SOT563 (6-pin, 1.6mm × 1.6mm × 0.55mm) surface-mount package with exposed thermal pad for enhanced heat dissipation in space-constrained PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
FB (Pin 1)	Feedback sensing input	Connects to voltage divider (R1/R2) to regulate output; 0.6V reference sets VOUT = 0.6V × (1 + R1/R2)
GND (Pin 2)	Power ground return	Primary ground reference for IC logic, gate drivers, and power stage; must be low-impedance connection to thermal pad
VIN (Pin 3)	Main power input	Supplies both control circuitry and power MOSFETs; requires ≥10μF ceramic bypass capacitor close to pin
SW (Pin 4)	Switching node output	Drives external inductor; high di/dt node requiring short, wide trace and minimized loop area with GND
EN (Pin 5)	Enable control input	Logic-level digital enable (V_{EN_H} = 0.91V typ); pulls down to disable, reducing supply current to 0.1μA
OUT (Pin 6)	Output voltage rail	Direct connection point for output capacitor and load; not internally connected to PG-must remain unconnected if unused

Key Features

Feature	Design Value
Integrated Power MOSFETs	110mΩ HS + 80mΩ LS eliminate external FETs and gate drivers, reducing BOM count and layout complexity
Constant On-Time Control	Enables stable loop response without external compensation components-ideal for rapid design iteration
Ultra-Low Quiescent Current	19μA in PFM mode extends battery life in portable medical monitors and wireless sensor nodes
Comprehensive Protection	UVLO (1.84V fall), VIN OVP (6.3V), peak/valley current limiting, and thermal shutdown ensure robust field operation
SOT563 Thermal Performance	θ_JA = 141°C/W enables 2A operation at +85°C ambient without heatsink or airflow

Applications

Consumer Portable Power

FPGA Core Supply

Use Scenario: Powering ARM Cortex-M7 microcontrollers and BLE radios in handheld test equipment.

IC Role / Device Role / Timing Role: Primary step-down regulator converting 3.7V Li-ion to 1.2V core voltage with tight load-transient response.

Use Value: 19μA I_Q extends battery runtime beyond 72 hours in sleep mode; COT control suppresses output ripple to <20mV_pp during RF transmit bursts.

Use Scenario: Delivering clean, regulated 1.0V to Xilinx Artix-7 FPGA core logic under dynamic switching loads.

IC Role / Device Role / Timing Role: High-efficiency point-of-load (POL) converter with fast line/load transient recovery (<100μs).

Use Value: 1.3MHz f_SW allows use of 1μH inductor, minimizing board area; integrated MOSFETs reduce thermal hotspots near FPGA BGA.

Network Video Camera

White Goods Control Board

Use Scenario: Providing 3.3V and 1.8V rails for image sensor, ISP, and Wi-Fi SoC in IP cameras powered by PoE injectors.

IC Role / Device Role / Timing Role: Secondary buck regulator fed from 5V PoE-derived bus, delivering low-noise power to analog sensor front-end.

Use Value: 89% efficiency at 5mA light load maintains low self-heating during night-vision IR LED off periods; UVLO prevents brownout resets during PoE negotiation glitches.

Use Scenario: Regulating 5V system rail to 2.5V for microcontroller, display driver, and touch controller in smart refrigerator control panels.

IC Role / Device Role / Timing Role: Main DC-DC converter handling variable load profiles from idle UI to active defrost cycle motor startup.

Use Value: 2A rating accommodates 1.5A peak inrush from LCD backlight; SOT563 package fits tight 10mm × 10mm control board zones.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AP61202Z6-7	Includes open-drain PG pin; same PFM operation and pinout except Pin 6 = PG instead of OUT	Required where system-level power sequencing or fault monitoring is needed (e.g., industrial PLCs)	Select AP61202Z6-7 only if PG signal integration justifies redesigning feedback routing and adding pull-up resistor
RT7295BGJ6F	Higher 3A rating, 3.3V–18V input, 0.8V reference, but 45μA I_Q and larger TSOT23-6 package	Better suited for 12V automotive body electronics or higher-current industrial I/O modules	Choose RT7295BGJ6F when input exceeds 5.5V or output current demand exceeds 2A; avoid for battery-powered PFM-critical designs

Compared with AP61202Z6-7, AP61200Z6-7 trades PG functionality for simpler layout and identical efficiency at light load; versus RT7295BGJ6F, it offers lower I_Q and smaller footprint but narrower input range and reduced current headroom-making it optimal for compact, battery-sensitive 2A applications.

Availability

AP61200Z6-7 is available at Aetrix Electronics and suitable for FPGA core supplies, network video camera power rails, and white goods control boards requiring stable component supply and long-term production continuity.

Supply support for AP61200Z6-7 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 ICs, with manufacturing certified to IATF 16949 and product definitions aligned to AEC-Q200 standards.

The AP61200 series belongs to Diodes' high-efficiency, low-I_Q DC-DC converter product line, designed specifically for space- and power-constrained consumer, industrial, and IoT applications demanding reliable step-down conversion below 5.5V input.

FAQ

What is the minimum recommended input voltage for reliable startup?

The AP61200Z6-7 features a 2.00V power-on reset (POR) threshold and 1.84V undervoltage lockout (UVLO) falling threshold. Reliable startup requires VIN ≥ 2.00V; operation below 1.84V disables the regulator entirely. For Li-ion applications, this ensures stable operation down to ~3.0V cell voltage after discharge.

Can the AP61200Z6-7 be used with ceramic output capacitors only?

Yes-its Constant On-Time control architecture is inherently stable with low-ESR ceramic capacitors. The datasheet specifies 10μF X5R/X7R ceramics for both input and output; no tantalum or electrolytic capacitors are required. This simplifies layout and improves reliability in temperature-cycling environments.

How does the soft-start function interact with the EN pin?

Applying a logic-high signal (>0.91V) to EN initiates a fixed 0.5ms internal soft-start ramp on the FB reference, preventing output overshoot and limiting inrush current into output capacitance. During shutdown (EN < 0.83V), the soft-start capacitor discharges to ground, ensuring controlled turn-off without output droop or latch-up.

Is there a difference in thermal performance between AP61200Z6-7 and AP61201Z6-7?

No-the thermal resistance (θ_JA = 141°C/W, θ_JC = 33°C/W) and package (SOT563) are identical across AP61200/AP61201/AP61202/AP61203 variants. Differences lie solely in control mode (PFM vs. PWM) and pin function (OUT vs. PG); thermal design guidelines apply uniformly to all four part numbers.

AP61200Z6-7 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

AP61200Z6-7 FAQ

1.How can I place an order for AP61200Z6-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP61200Z6-7 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 AP61200Z6-7 reliable?

The price and inventory of AP61200Z6-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP61200Z6-7 is usually 5 days.

3.What payment methods are accepted for AP61200Z6-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP61200Z6-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP61200Z6-7?

AP61200Z6-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP61200Z6-7 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 AP61200Z6-7?

For technical support, including AP61200Z6-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP61200Z6-7 requirements.

6.How does Aetrix verify that AP61200Z6-7 is sourced from the original manufacturer or authorized distributors?

All AP61200Z6-7 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 AP61200Z6-7 meets industry standards.

7.What is the process for return or replacement of AP61200Z6-7?

All AP61200Z6-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP61200Z6-7, 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 AP61200Z6-7 part is unused and in its original packaging.

Return procedure for AP61200Z6-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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