My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1616AEUK
- Part No.:
- MAX1616AEUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX1616AEUK.pdf
- Description:
- HIGH-VOLTAGE, LOW-POWER LINEAR R
- Quantity:
- Payment:
- Shipping:
Inventory:944
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1616AEUK from Maxim Integrated is an adjustable-output, high-voltage linear regulator in SOT23-5 package, delivering 1.24V to 28V output at up to 30mA with 8µA max quiescent current and 350mV dropout at 30mA load. It operates from 4V–28V input, features thermal shutdown and foldback current limiting, and targets keep-alive power for microcontrollers and RTCs in notebook computers and smart-battery packs.
For engineers reviewing the MAX1616AEUK datasheet, MAX1616AEUK pinout, MAX1616AEUK application, or MAX1616AEUK equivalent, this page delivers verified electrical parameters, validated SOT23-5 terminal mapping, confirmed feedback-based voltage-setting behavior, and real-world use cases in battery-switchover systems requiring ultra-low IQ and fast line-transient response.
Technical Context
The MAX1616AEUK uses external resistor feedback (FB pin) to regulate output voltage precisely to 1.24V reference threshold, enabling programmable outputs from 1.24V to 28V. Its internal pass transistor and bias circuitry are optimized for high input voltage operation while maintaining sub-1µA shutdown current and <100nA FB input current.
It implements thermal overload protection with +150°C trip point and +20°C hysteresis, and foldback current limiting that sustains 100mA typical short-circuit current without damage for up to 30 seconds. The GND pin serves dual roles: signal reference and thermal conduction path.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 28V - supports direct connection to high-voltage batteries and AC adapter rails without pre-regulation. |
| Output Voltage Range | 1.24V to 28V - set externally via resistive divider; enables flexible system-level voltage scaling. |
| Max Output Current | 30mA continuous - limited by thermal dissipation (571mW at +70°C ambient in SOT23-5). |
| Quiescent Supply Current | 8µA max - ensures minimal battery drain during long-term keep-alive operation. |
| Dropout Voltage | 350mV at 30mA - allows regulation even when input is only ~0.35V above output. |
| FB Threshold Voltage | 1.24V ±2.5% - defines precision of external voltage setting; low drift over temperature. |
| Shutdown Current | <1µA - reduces system standby power to negligible levels when disabled. |
Pinout & Package
The MAX1616AEUK is housed in a lead-free SOT23-5 package with exposed pad thermal performance optimized for PCB heat sinking. Pin 1 = IN, Pin 2 = GND, Pin 3 = FB, Pin 4 = SHDN, Pin 5 = OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Positive input supply | Accepts 4V–28V unregulated input; must be decoupled with ≥0.1µF capacitor. |
| 2 (GND) | Ground reference & thermal path | Serves as both signal return and primary heat conduction path; requires large copper area. |
| 3 (FB) | Feedback input | Connects to resistor divider midpoint; regulates output to 1.24V at this node. |
| 4 (SHDN) | Active-low enable control | Pull low to disable regulator; draws <1µA in shutdown; connect to IN for automatic start-up. |
| 5 (OUT) | Regulated output | Delivers adjustable voltage; requires ≥1µF output capacitance (4.7µF for full 30mA load). |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output via external resistors | Enables precise system-specific voltage generation (1.24V–28V) without custom IC variants. |
| Ultra-low 8µA quiescent current | Extends battery life in always-on backup circuits-e.g., CMOS RAM retention for months on coin cell. |
| Thermal shutdown with hysteresis | Prevents permanent damage during overload; auto-recovery at +130°C junction enables fault-tolerant operation. |
| High PSRR and fast line transient response | Maintains clean output during battery-to-adapter switchover transients (<50mV overshoot, 1ms start-up). |
| Foldback current limiting | Limits power dissipation during short-circuit events; sustains safe operation for 30 seconds at 0V output. |
Applications
| CMOS/RTC Backup Power | Microcontroller Keep-Alive Supply |
|---|---|
Use Scenario: Maintaining timekeeping and memory state in notebooks or PDAs during AC power loss or battery swap. IC Role / Device Role / Timing Role: Low-IQ linear regulator providing stable VCC to RTC and SRAM during main power interruption. Use Value: 8µA max IQ enables >1-year coin-cell lifetime; 350mV dropout preserves regulation down to 3.59V input at 3.3V output. | Use Scenario: Powering microcontrollers in smart-battery packs that must remain awake to monitor cell voltage, temperature, and charge state. IC Role / Device Role / Timing Role: Primary always-on supply for MCU core and ADC peripherals during deep-sleep or fuel-gauge operation. Use Value: Adjustable output supports diverse MCU VDD requirements (e.g., 1.8V, 2.5V, 3.3V); FB pin enables accurate calibration across temperature. |
| Notebook Computer Auxiliary Rail | Battery-Powered Industrial Sensor Node |
Use Scenario: Generating auxiliary 5V or 12V rail from main battery for USB charging controllers or display backlight drivers during suspend mode. IC Role / Device Role / Timing Role: Secondary regulated supply independent of main DC-DC converter, activated only during low-power states. Use Value: Shutdown current <1µA eliminates parasitic drain; 28V max input accommodates 24V nominal Li-ion stacks. | Use Scenario: Powering wireless sensor modules (e.g., LoRaWAN, BLE) deployed in remote locations with long-life primary batteries. IC Role / Device Role / Timing Role: Precision low-noise LDO supplying analog front-end and RF transceiver during periodic wake-up bursts. Use Value: 5mVp-p output noise avoids ADC quantization errors; 1.24V FB reference enables tight tolerance on critical sensor bias voltages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable high-voltage LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1763CS8-5#TRPBF | Fixed 5V output; 500mA rating; higher IQ (100µA); SO-8 package | Not adjustable; unsuitable for variable-output or space-constrained designs | Select only if fixed 5V and higher current are required, and board area permits SO-8 footprint. |
| TSM1083IDCYR | Adjustable 1.22V–24V; 150mA rating; 30µA IQ; SOT23-5 package | Higher quiescent current; wider output range but lower accuracy (±3% vs ±2%) | Consider when >30mA load is needed and 22µA higher IQ is acceptable for system runtime. |
Compared with LT1763CS8-5#TRPBF and TSM1083IDCYR, the MAX1616AEUK uniquely balances ultra-low 8µA IQ, SOT23-5 footprint, and 1.24V–28V adjustability-making it optimal for battery-backed systems where standby duration and board space are critical constraints.
Availability
MAX1616AEUK is available at Aetrix Electronics and suitable for notebook computer auxiliary rails, smart-battery pack microcontroller supplies, CMOS/RTC backup circuits, and industrial sensor nodes requiring stable component supply with guaranteed long-term availability.
Supply support for MAX1616AEUK 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, computing, and communications applications.
The MAX1615/MAX1616 product line was engineered specifically for high-input-voltage, ultra-low-quiescent-current linear regulation in portable computing and battery-powered systems where keep-alive functionality is essential.
FAQ
What output voltage range does the MAX1616AEUK support?
The MAX1616AEUK supports an adjustable output voltage range from 1.24V to 28V, set using an external resistor divider connected to the FB pin. The internal feedback reference is trimmed to 1.24V ±2.5% across temperature, enabling precise and stable output configuration for diverse system requirements.
How does the MAX1616AEUK achieve ultra-low quiescent current?
The MAX1616AEUK achieves 8µA maximum quiescent current through proprietary low-power biasing and optimized transistor sizing in its bandgap reference and error amplifier. This design minimizes static current draw while preserving regulation accuracy and transient response-critical for multi-month battery operation in backup applications.
Can the MAX1616AEUK be used with input voltages below 4V?
No-the MAX1616AEUK has a specified minimum input voltage of 4V per Absolute Maximum Ratings and Electrical Characteristics tables. Operation below 4V is not guaranteed and may result in loss of regulation, increased dropout, or undefined behavior; the device is designed explicitly for high-voltage battery and adapter inputs.
What is the role of the SHDN pin on the MAX1616AEUK?
The SHDN pin on the MAX1616AEUK is an active-low enable input that disables the regulator's pass transistor, reference, and control circuitry when pulled low, reducing total supply current to <1µA. Connecting SHDN to IN provides automatic startup upon power application, eliminating need for external sequencing logic.
Does the MAX1616AEUK require specific output capacitor types or values?
Yes-the MAX1616AEUK requires a minimum 1µF output capacitor for stability, with 4.7µF recommended for full 30mA load and 6.8µF suggested for optimal transient response. Ceramic X7R or tantalum capacitors with ESR <1Ω are required; electrolytic types must meet low-ESR specs per manufacturer guidelines.
MAX1616AEUK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX1616AEUK FAQ
1.How can I place an order for MAX1616AEUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1616AEUK 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 MAX1616AEUK reliable?
The price and inventory of MAX1616AEUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1616AEUK is usually 5 days.
3.What payment methods are accepted for MAX1616AEUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1616AEUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1616AEUK?
MAX1616AEUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1616AEUK 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 MAX1616AEUK?
For technical support, including MAX1616AEUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1616AEUK requirements.
6.How does Aetrix verify that MAX1616AEUK is sourced from the original manufacturer or authorized distributors?
All MAX1616AEUK 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 MAX1616AEUK meets industry standards.
7.What is the process for return or replacement of MAX1616AEUK?
All MAX1616AEUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX1616AEUK, 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 MAX1616AEUK part is unused and in its original packaging.
Return procedure for MAX1616AEUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1616AEUK Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
