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Analog Devices Inc./Maxim Integrated MAX8516EUB+
- Part No.:
- MAX8516EUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX8516EUB+.pdf
- Description:
- IC REG LINEAR POS ADJ 1A 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,644
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Product details
Overview
MAX8516EUB+ from Maxim Integrated is a 1A, low-dropout linear regulator with PMOS pass transistor architecture, operating from 1.425V to 3.6V input and delivering adjustable output from 0.5V to (VIN − 0.2V) with ±1.4% accuracy over load, line, and temperature (−40°C to +85°C). It features 200mV dropout at 1A, 320μA ground current, <25μA shutdown current, and supports ceramic input/output capacitors (1μF/4.7μF) for server post-regulation and optical module power rails.
For engineers reviewing the MAX8516EUB+ datasheet, MAX8516EUB+ pinout, MAX8516EUB+ application, or MAX8516EUB+ equivalent, this page delivers verified electrical parameters, package-validated pin functions, thermal protection behavior, soft-start inrush control, and real-world transient response data - all specific to the MAX8516EUB+ variant without conflating features of MAX8517/MAX8518.
Technical Context
The MAX8516EUB+ uses an internal p-channel MOSFET pass device (100mΩ typ), eliminating base-drive current and enabling stable operation down to 1.425V input while maintaining low quiescent current (340μA typ in dropout). Its feedback loop references a precise 500mV FB threshold with ±7mV accuracy over temperature, supporting high-accuracy adjustable outputs via external resistor dividers.
It integrates soft-start to limit inrush current, logic-controlled shutdown with 25μA max supply current, thermal shutdown at +165°C (re-enable at +150°C), and short-circuit current limiting to 2A. Unlike MAX8517/MAX8518, it lacks POK or POR outputs - confirmed by pin configuration tables and functional diagrams.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.425V to 3.6V - enables direct regulation from single-cell Li-ion or low-voltage logic rails without pre-regulation. |
| Output Current | 1A continuous - sufficient for powering core logic, FPGAs, or SERDES in networking and storage systems. |
| Dropout Voltage | 200mV max at 1A - ensures regulation even when VIN is only 200mV above VOUT, critical for battery-powered efficiency. |
| Output Accuracy | ±1.4% over load/line/temp (−40°C to +85°C); ±0.6% initial - guarantees tight voltage tolerance for sensitive analog/digital loads. |
| Ground Current | 320μA typ at 100mA load; 340μA typ in dropout - ultra-low quiescent current preserves battery life in always-on systems. |
| Shutdown Current | <25μA - reduces system standby power to negligible levels during sleep modes. |
| Capacitor Support | 1μF ceramic input / 4.7μF ceramic output - eliminates need for bulky electrolytics; simplifies layout and improves reliability. |
Pinout & Package
The MAX8516EUB+ is housed in a 10-pin μMAX® package (3mm × 5mm) with exposed pad (EP) soldered to PCB ground for optimal thermal dissipation (824mW at TA = +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | EN | Enable input: logic-high (≥1.2V) enables regulation; logic-low disables output and reduces supply current to <25μA. |
| 2, 3 | IN | Regulator input: accepts 1.425V–3.6V; requires ≥1μF ceramic bypass to GND for stability under 1A transients. |
| 4, 5, 10 | N.C. | No connection: pins 4/5/10 are unconnected internally; pin 10 has internal 10kΩ pull-down to GND but must remain floating. |
| 6 | GND | Power and signal ground: electrically and thermally connects to EP; must be tied to large PCB ground plane. |
| 7 | FB | Feedback input: senses output via resistor divider; 500mV reference enables precise adjustable VOUT from 0.5V to (VIN − 0.2V). |
| 8, 9 | OUT | Regulated output: delivers up to 1A; requires ≥4.7μF ceramic capacitor to GND for full-load transient stability. |
| EP | GND (Thermal) | Exposed pad: mandatory connection to PCB ground plane via multiple vias to maintain junction temperature ≤+150°C. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS Pass Transistor | 100mΩ typical RDS(ON) - enables low dropout and eliminates base-drive current loss seen in PNP regulators. |
| Soft-Start Circuitry | Inherent ramp-up limits peak inrush current - prevents input rail sag and avoids triggering upstream current limits. |
| Thermal Shutdown | +165°C trip / +150°C recovery - provides autonomous fault recovery without external supervision or latch-up. |
| Short-Circuit Protection | 2A current limit - sustains indefinite short-circuit condition while preventing device destruction or board damage. |
| Ceramic Capacitor Compatibility | Stable with 1μF IN / 4.7μF OUT - removes ESR dependency, reduces BOM count, and improves long-term reliability vs. electrolytics. |
Applications
| Optical Transceivers | Server Core Rails |
|---|---|
|
Use Scenario: Powering 25G/100G SFP28/QSFP28 laser drivers and TIAs where noise-sensitive analog circuitry demands clean, low-ripple DC. IC Role / Device Role / Timing Role: Post-regulator supplying precisely trimmed 1.2V or 1.8V to analog front-end ICs with sub-1% tolerance. Use Value: 45mV load-transient deviation (20mA→1A step) and 70dB PSRR at 1kHz ensure minimal jitter injection into high-speed serial links. |
Use Scenario: Providing auxiliary 1.1V or 1.5V rails for FPGA I/O banks or memory interface buffers in rack-mounted servers. IC Role / Device Role / Timing Role: Low-noise, high-current LDO replacing switching converters near timing-critical logic to avoid EMI coupling. Use Value: 320μA quiescent current and ceramic capacitor support reduce thermal footprint and simplify layout in dense server PCBs. |
| Network Switch ASICs | Industrial Edge Controllers |
|
Use Scenario: Regulating power for multi-core network processors requiring fast transient response during packet burst processing. IC Role / Device Role / Timing Role: Primary 1A LDO for processor core or SerDes PLL supply, directly fed from intermediate 3.3V buck stage. Use Value: 200mV dropout allows operation from 1.5V input when VOUT = 1.3V - maximizing efficiency in multi-rail architectures. |
Use Scenario: Supplying isolated sensor interface circuits in programmable logic controllers operating across −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Industrial-grade adjustable LDO delivering stable 3.3V or 2.5V to precision ADCs and isolation gate drivers. Use Value: ±1.4% output accuracy over full temperature range ensures consistent measurement integrity without calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A4700RGWR | 20V max input, 1A, 325μV RMS noise, fixed/adjustable, but 350mV dropout at 1A - higher headroom requirement. | Lacks integrated thermal shutdown recovery hysteresis; requires external enable sequencing in multi-rail systems. | Choose TPS7A4700RGWR only if input voltage exceeds 3.6V or ultralow noise (<10μV RMS) is prioritized over dropout. |
| ADP1740ACPZ-R7 | 2.5V–5.5V input, 1A, 150mV dropout at 1A, but ±2% output accuracy over temp and no soft-start - higher output error and inrush risk. | Designed for cost-sensitive industrial apps; lacks guaranteed −40°C startup and fails open-circuit on thermal fault. | Select ADP1740ACPZ-R7 only for non-critical 3.3V/5V rails where 150mV dropout justifies ±2% tolerance and missing soft-start. |
Compared with TPS7A4700RGWR and ADP1740ACPZ-R7, the MAX8516EUB+ uniquely combines 200mV dropout at 1A, ±1.4% accuracy over −40°C to +85°C, inherent soft-start, and thermal-recovery hysteresis - making it optimal for compact, high-reliability embedded systems where input headroom and thermal autonomy are constrained.
Availability
MAX8516EUB+ is available at Aetrix Electronics and suitable for optical modules, server post-regulation, and industrial edge controllers requiring stable component supply, RoHS-compliant packaging, and guaranteed −40°C to +85°C operation.
Supply support for MAX8516EUB+ 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, designs precision analog, mixed-signal, and power management ICs for demanding industrial, communications, and computing applications.
The MAX8516EUB+ belongs to Maxim's high-performance LDO family targeting low-input, low-dropout applications in space-constrained, thermally challenging environments - specifically engineered for post-regulation in optical, server, and networking equipment.
FAQ
What is the minimum input voltage required for the MAX8516EUB+ to regulate a 1.2V output?
The MAX8516EUB+ requires at least 1.425V input to guarantee regulation. For a 1.2V output, the minimum valid input is 1.425V - which provides 225mV headroom, exceeding the 200mV max dropout. Operation below 1.425V is not specified and may result in loss of regulation or increased ground current. The MAX8516EUB+'s undervoltage lockout activates at ~1.35V (70mV hysteresis), ensuring predictable disable behavior.
Does the MAX8516EUB+ include power-good or reset functionality like the MAX8517/MAX8518?
No, the MAX8516EUB+ does not include power-good (POK) or power-on reset (POR) outputs. Pin 4 and pin 5 are designated N.C. (no connection), and pin 5 is not repurposed as POK (unlike MAX8517) or POR (unlike MAX8518). This is confirmed by the pin configuration diagrams, functional block diagram, and absence of POK/POR specifications in the MAX8516EUB+'s Electrical Characteristics table. The MAX8516EUB+ is the base variant optimized for simplicity and cost in applications not requiring status signaling.
What is the recommended output capacitor value for 1A load with the MAX8516EUB+?
The recommended output capacitor for full 1A operation is 4.7μF ceramic with low ESR. This value ensures stability, limits load-transient deviation to 45mV (20mA → 1A step), and satisfies the manufacturer's design validation. Smaller values may be used for reduced loads: COUT = IOUT(max) × (1μF / 200mA). For example, 500mA load requires ≥2.35μF. Larger ceramics (up to 50μF) further attenuate overshoot but are not required for basic stability.
How does the MAX8516EUB+ handle thermal overload conditions?
The MAX8516EUB+ features autonomous thermal protection with +165°C shutdown and +150°C restart hysteresis. When junction temperature reaches +165°C, the output turns off completely. Once the die cools to +150°C, regulation resumes automatically - no external reset or power cycle is needed. This cycling continues until the fault (e.g., excessive power dissipation or ambient temperature) is removed. The exposed pad (EP) must be soldered to a robust ground plane to achieve the rated 824mW power dissipation at +70°C ambient.
Can the MAX8516EUB+ be used with tantalum or aluminum electrolytic capacitors instead of ceramic?
No - the MAX8516EUB+ is specifically designed and characterized for ceramic capacitors only. Its stability, transient response, and dropout performance rely on the low ESR and ESL of ceramic types. Tantalum or aluminum electrolytics introduce higher ESR, which can cause oscillation, poor load transient response, or failure to meet dropout specifications. The datasheet explicitly states compatibility "with ceramic capacitors" and specifies 1μF/4.7μF ceramic values - using alternatives voids guaranteed performance and risks instability.
MAX8516EUB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 3.6V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 3.4V
- Voltage Dropout (Max):
- 0.2V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 320 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Short Circuit, Soft Start, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX-EP
MAX8516EUB+ FAQ
1.How can I place an order for MAX8516EUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8516EUB+ 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 MAX8516EUB+ reliable?
The price and inventory of MAX8516EUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8516EUB+ is usually 5 days.
3.What payment methods are accepted for MAX8516EUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8516EUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8516EUB+?
MAX8516EUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8516EUB+ 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 MAX8516EUB+?
For technical support, including MAX8516EUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8516EUB+ requirements.
6.How does Aetrix verify that MAX8516EUB+ is sourced from the original manufacturer or authorized distributors?
All MAX8516EUB+ 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 MAX8516EUB+ meets industry standards.
7.What is the process for return or replacement of MAX8516EUB+?
All MAX8516EUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8516EUB+, 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 MAX8516EUB+ part is unused and in its original packaging.
Return procedure for MAX8516EUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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