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Analog Devices Inc./Maxim Integrated MAX8560EZK-T
- Part No.:
- MAX8560EZK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8560EZK-T.pdf
- Description:
- IC REG BUCK ADJ 500MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
The MAX8560EZK-T from Maxim Integrated is a 4MHz, 500mA synchronous step-down DC-DC converter in a 5-pin Thin SOT23 package, designed for space-constrained portable power rails. It delivers regulated output from 0.6V to 2.5V with ±1.5% initial accuracy, 40µA typical quiescent current, and internal synchronous rectification-eliminating the need for an external Schottky diode. It is used in microprocessor core supplies and CDMA RF power-amplifier biasing.
For engineers reviewing the MAX8560EZK-T datasheet, MAX8560EZK-T pinout, MAX8560EZK-T application, or MAX8560EZK-T equivalent, key selection criteria include guaranteed 500mA output current, 2.7V–5.5V input range, hysteretic-PWM control up to 4MHz, soft-start functionality, and thermal shutdown protection-critical for battery-powered handheld designs requiring high efficiency and minimal BOM count.
Technical Context
The MAX8560EZK-T employs a proprietary hysteretic-PWM control architecture that combines fixed-frequency switching (up to 4MHz) with pulse-skipping at light loads to maintain 40µA quiescent current. Its voltage-positioning feedback topology-sampling from the LX node via R1-removes phase lag from COUT, enabling stable regulation with only 2.2µF ceramic output capacitance and fast transient response.
It integrates a P-channel high-side switch and N-channel synchronous rectifier with on-resistances of 0.8Ω (PFET) and 0.4Ω (NFET), supporting 500mA continuous output while limiting peak LX current to 1.27A. Shutdown mode reduces supply current to 0.1µA, and thermal shutdown activates at +160°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li+ and dual-cell alkaline inputs without external regulators. |
| Output Voltage Range | 0.6V to 2.5V - adjustable via external resistor divider; FB pin regulates to 0.6V nominal. |
| Max Output Current | 500mA guaranteed - sufficient for DSP/microprocessor core rails and RF PA bias stages. |
| Switching Frequency | Up to 4MHz - enables use of sub-2.2µH inductors and <3µF ceramic capacitors for ultra-compact layouts. |
| Quiescent Current | 40µA (typ) - extends battery life in always-on or low-duty-cycle portable systems. |
| Feedback Accuracy | ±1.5% (initial, TA = +25°C) - ensures tight voltage tolerance for sensitive digital core supplies. |
| Shutdown Current | 0.1µA - minimizes leakage during system sleep modes without external disconnect switches. |
Pinout & Package
MAX8560EZK-T is housed in a 5-pin Thin SOT23-5 package (3.0mm × 1.7mm × 1.3mm), with exposed pad not electrically connected (GND-connected per datasheet layout guidance). Pin 1 is marked by a dot or beveled edge; pin numbering follows standard SOT23 convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 2) | Ground reference | Primary signal and power return; must be low-impedance connection to PCB ground plane. |
| IN (Pin 1) | Power input | Accepts 2.7V–5.5V; requires local 2.2µF ceramic bypass capacitor between IN and GND. |
| LX (Pin 5) | Switch node | Connects to inductor; carries high dv/dt and peak currents; routing must minimize loop area and parasitic inductance. |
| FB (Pin 4) | Voltage feedback | Senses output via resistive divider; 0.6V threshold enables precise output setting; trace must be short and noise-shielded. |
| SHDN (Pin 3) | Active-low enable | Pull low to enter 0.1µA shutdown; pull high or tie to IN for normal operation; no external pull-up required. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-positioning feedback | Uses LX node sampling to eliminate COUT-induced phase lag-enables stable loop with 2.2µF ceramic output cap and halves peak-to-peak load transient excursion. |
| Internal synchronous rectification | Integrates PFET high-side switch and NFET low-side rectifier (RONP = 0.8Ω, RONN = 0.4Ω)-eliminates external Schottky diode and improves full-load efficiency by >8% vs. asynchronous designs. |
| Programmable 4MHz switching | Fixed-frequency hysteretic-PWM allows trade-off between component size (smaller L/C) and efficiency-supports 1µH inductors without sacrificing stability. |
| Integrated soft-start | Internal ramp limits inrush current during startup-reduces required input capacitance and prevents brownout on high-impedance sources like coin cells. |
| Thermal shutdown with hysteresis | Triggers at +160°C with 20°C recovery margin-protects against sustained overload or poor heatsinking in sealed enclosures. |
Applications
| Microprocessor Core Supply | CDMA RF Power Amplifier Bias |
|---|---|
Use Scenario: Powers ARM Cortex-M or DSP core at 1.2V/300mA in smartphone application processor subsystem. IC Role / Device Role / Timing Role: Primary buck regulator delivering tightly regulated, low-noise VDD_CORE with fast transient response to dynamic clock/load changes. Use Value: Voltage-positioning feedback reduces output voltage droop during 200mA load steps to <25mV-preventing core reset or timing violations. |
Use Scenario: Supplies 2.5V bias to CDMA PA stage in cellular handset during transmit bursts. IC Role / Device Role / Timing Role: High-efficiency, low-quiescent-current step-down converter enabling extended talk time under pulsed 500mA peak loads. Use Value: 40µA quiescent current and 4MHz operation allow use of 1µH inductor and 2.2µF output cap-saving >3mm² PCB area vs. 1MHz alternatives. |
| Smartphone Baseband IC Supply | Portable Media Player DSP Rail |
Use Scenario: Generates 1.5V rail for LTE baseband SoC in compact form factor mobile device. IC Role / Device Role / Timing Role: Compact, thermally robust DC-DC converter operating across -40°C to +85°C ambient with no derating. Use Value: Thermal shutdown at +160°C and 500mA guaranteed output ensure reliable operation during sustained data transmission in enclosed chassis. |
Use Scenario: Powers audio DSP in MP3 player requiring clean 1.8V supply with minimal ripple during playback. IC Role / Device Role / Timing Role: Synchronous buck converter with integrated FETs and low EMI switching profile for noise-sensitive analog sections. Use Value: Internal soft-start and hysteretic-PWM control limit output overshoot to <40mV during startup-avoiding DAC/codec latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | 3MHz max switching frequency; 300mA output; 2.05V–6.5V input; 19µA IQ | Lower output current and narrower input range; optimized for ultra-low-IQ wearables | Select when IQ <25µA is mandatory and 300mA output suffices. |
| RT8059GJ6 | 2.5MHz max frequency; 600mA output; 2.5V–5.5V input; 35µA IQ; different pinout (EN/FB/VOUT) | Higher current capability but lacks voltage-positioning feedback and LX-sampled FB | Select when higher output current is needed and board layout allows re-routing FB path. |
Compared with TPS62231DRYR and RT8059GJ6, the MAX8560EZK-T uniquely combines 4MHz operation, voltage-positioning feedback, and 500mA output in a 5-pin SOT23-enabling smallest possible solution size for 1–2.5V core rails where transient response and layout simplicity are critical.
Availability
MAX8560EZK-T is available at Aetrix Electronics and suitable for microprocessor core supplies, CDMA RF power-amplifier biasing, and portable media player DSP rails requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature.
Supply support for MAX8560EZK-T 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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX8560EZK-T belongs to Maxim's high-frequency synchronous buck converter product line, engineered specifically for space- and efficiency-critical portable electronics where small inductors, minimal ceramic capacitance, and low quiescent current are essential design requirements.
FAQ
What is the maximum supported switching frequency for the MAX8560EZK-T?
The MAX8560EZK-T supports a maximum switching frequency of 4MHz. This high-frequency capability allows designers to use smaller external inductors (down to 1µH) and ceramic output capacitors (as low as 2.2µF), significantly reducing solution footprint. The frequency is fixed by internal oscillator design and is not user-adjustable beyond the specified 4MHz upper limit.
Does the MAX8560EZK-T require an external Schottky diode?
No, the MAX8560EZK-T does not require an external Schottky diode. It integrates both a P-channel high-side switch and an N-channel synchronous rectifier, providing full synchronous rectification. This eliminates conduction losses associated with external diodes and improves efficiency-especially at medium to high load currents-while simplifying the bill of materials.
What is the purpose of the LX pin on the MAX8560EZK-T?
The LX pin on the MAX8560EZK-T is the switch node connecting internally to the drains of the integrated P-channel and N-channel MOSFETs. It drives the external inductor and forms the critical high-di/dt path in the power loop. Proper PCB layout-short, wide traces with minimized loop area-is essential to reduce EMI and ensure stable operation, especially at 4MHz switching.
Can the MAX8560EZK-T operate from a single-cell Li+ battery?
Yes, the MAX8560EZK-T operates from 2.7V to 5.5V, making it fully compatible with single-cell Li+ batteries (nominal 3.6V, range ~2.8V–4.2V). Its 2.4V UVLO threshold with 60mV hysteresis ensures reliable startup even as the battery discharges near end-of-life, and its 40µA quiescent current helps maximize runtime in standby modes.
How is output voltage set on the MAX8560EZK-T?
Output voltage on the MAX8560EZK-T is set using a resistive divider between LX and GND, with the FB pin connected to the midpoint. Since FB regulates to 0.6V, the output voltage is calculated as VOUT = 0.6V × (1 + R1/R2). For example, R1 = 100kΩ and R2 = 100kΩ yields 1.2V. The unique LX-referenced feedback enables voltage positioning for superior transient response.
MAX8560EZK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 2.5V
- Current - Output:
- 500mA
- Frequency - Switching:
- Up to 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
MAX8560EZK-T FAQ
1.How can I place an order for MAX8560EZK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8560EZK-T 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 MAX8560EZK-T reliable?
The price and inventory of MAX8560EZK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8560EZK-T is usually 5 days.
3.What payment methods are accepted for MAX8560EZK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8560EZK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8560EZK-T?
MAX8560EZK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8560EZK-T 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 MAX8560EZK-T?
For technical support, including MAX8560EZK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8560EZK-T requirements.
6.How does Aetrix verify that MAX8560EZK-T is sourced from the original manufacturer or authorized distributors?
All MAX8560EZK-T 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 MAX8560EZK-T meets industry standards.
7.What is the process for return or replacement of MAX8560EZK-T?
All MAX8560EZK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8560EZK-T, 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 MAX8560EZK-T part is unused and in its original packaging.
Return procedure for MAX8560EZK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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