My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1836EUT50#TG16
- Part No.:
- MAX1836EUT50#TG16
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX1836EUT50#TG16.pdf
- Description:
- IC REG BUCK 5V 125MA SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:4,355
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX1836EUT50#TG16 from Maxim Integrated is a high-efficiency, 5V preset step-down DC-DC converter with internal 24V p-channel MOSFET, 125mA output current capability, 4.5V–24V input range, and 100% duty-cycle operation enabling ultra-low dropout (120mV at 100mA) - ideal for space-constrained 9V battery systems and industrial control supplies.
For engineers reviewing the MAX1836EUT50#TG16 datasheet, MAX1836EUT50#TG16 pinout, MAX1836EUT50#TG16 application, or MAX1836EUT50#TG16 equivalent, key selection considerations include its SOT23-6 package, 12μA quiescent current, adjustable output mode (1.25V to VIN), thermal shutdown at 160°C, and compatibility with low-ESR ceramic or polymer output capacitors.
Technical Context
The MAX1836EUT50#TG16 employs a proprietary current-limited control architecture operating up to 100% duty cycle, eliminating fixed-frequency PWM switching losses and reducing no-load supply current to 12μA. Its internal 24V-rated p-channel MOSFET features 1.1Ω typical on-resistance and integrates current sensing and zero-crossing detection.
This device operates in discontinuous conduction mode (DCM) with variable frequency, where switching pulses occur only as needed to maintain regulation. Minimum off-time is 0.2μs and maximum on-time is 10μs, while feedback threshold is precisely trimmed to 1.25V ±4% for stable adjustable-mode operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Preset 5.00V ±4% (4.80V–5.20V) at 0–125mA load; verified across -40°C to +85°C. |
| Input Voltage Range | 4.5V to 24V - supports wide-range industrial and battery inputs including 9V, 12V, and 24V rails. |
| Max Output Current | 125mA continuous - limited by internal 312mA current limit and thermal dissipation in SOT23 package. |
| Quiescent Current | 12μA typical at no load - enables multi-year battery life in always-on sensor nodes. |
| Dropout Voltage | 120mV at 100mA - achieved via 100% duty cycle; allows operation down to VIN = VOUT + 0.12V. |
| Shutdown Current | 3μA max - reduces system standby power to negligible levels when SHDN = GND. |
| Switching Frequency | Variable (≈500kHz–1.2MHz typical) - scales with load; eliminates external frequency-setting components. |
Pinout & Package
MAX1836EUT50#TG16 is housed in a RoHS-compliant 6-pin SOT23 package (JEDEC MO-178AA), with exposed pad (EP) internally connected to GND for thermal and electrical integrity. Pin 1 is marked by a dot or beveled edge per standard SOT23 orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Dual-mode feedback input | Connect to GND for 5V preset mode; connect to resistive divider for adjustable output (1.25V–VIN). |
| 2 GND | Power and signal ground reference | Primary return path for internal circuitry and LX switch; must be tied to EP pad for optimal thermal performance. |
| 3 IN | Main input voltage supply | Accepts 4.5V–24V; powers internal bias circuits and source of internal p-channel MOSFET. |
| 4 LX | Switch node connection | Drain of internal p-channel MOSFET; connects to inductor and catch diode anode; high dv/dt node requiring tight layout. |
| 5 SHDN | Logic-controlled shutdown enable | Active-low input; <0.8V shuts down IC (3μA ISHDN); >2.4V enables operation; must not float. |
| 6 OUT | High-impedance output sense | Internally tied to feedback divider; connect to regulated output in preset mode; tie to GND in adjustable mode. |
Key Features
| Feature | Design Value |
|---|---|
| 100% duty-cycle operation | Enables lowest possible dropout voltage (120mV @100mA), extending usable battery voltage range in 9V systems. |
| 12μA no-load supply current | Minimizes idle power loss - critical for long-life battery-powered handheld and remote sensors. |
| Internal 24V p-channel MOSFET | Eliminates external high-voltage switch; simplifies BOM and reduces PCB area vs. controller-based solutions. |
| Dual-mode feedback (FB) | Single-pin support for both factory-preset (5V) and user-adjustable (1.25V–VIN) outputs - no external resistor changes needed. |
| Thermal shutdown with 10°C hysteresis | Protects against sustained overload; auto-recovery prevents latch-up during transient overloads. |
Applications
| 9V Battery Systems | Notebook Computers |
|---|---|
|
Use Scenario: Powering low-power microcontrollers and sensors from aging 9V alkaline batteries. IC Role / Device Role / Timing Role: Primary 5V step-down regulator delivering stable rail despite battery sag to 5.5V. Use Value: 100% duty cycle maintains regulation down to VIN = 5.12V, maximizing battery runtime before cutoff. |
Use Scenario: Supplying auxiliary 5V rails for USB peripherals or embedded controllers in compact notebooks. IC Role / Device Role / Timing Role: Secondary DC-DC converter replacing linear regulators to reduce heat and improve efficiency. Use Value: 90%+ efficiency at 50–100mA loads cuts thermal load vs. LDOs, easing thermal design in thin form factors. |
| Distributed Power Systems | Industrial Control Supplies |
|
Use Scenario: Local point-of-load conversion in PLC I/O modules powered from 24V backplanes. IC Role / Device Role / Timing Role: Isolated 5V supply for digital logic and communication interfaces (e.g., RS-485 transceivers). Use Value: 24V input rating and 125mA output meet EN 61000-4-5 surge immunity requirements when paired with proper input filtering. |
Use Scenario: Providing clean 5V for microcontroller cores and analog front-ends in harsh factory environments. IC Role / Device Role / Timing Role: Main system regulator with thermal shutdown and undervoltage lockout (3.55V UVLO). Use Value: 160°C thermal shutdown and -40°C to +85°C operation ensure reliability in uncooled enclosures near motors or drives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1776EUT50-T | Higher 500mA output, same 5V preset, but uses 24V internal switch with different current-limit architecture (no 100% duty cycle). | Supports higher-current loads (e.g., LCD bias, multiple sensors); less suitable for ultra-low-dropout battery apps. | Select MAX1776EUT50-T when >125mA load current is required and dropout margin >200mV is acceptable. |
| TPS62231DRYT | 3-MHz fixed-frequency buck, 300mA output, 2.05–6.5V input, 5V preset; lower IQ (22μA) but no 100% duty cycle. | Better for noise-sensitive RF sections due to fixed frequency; lacks dropout advantage below 5.3V input. | Choose TPS62231DRYT for EMI-controlled environments where predictable switching frequency matters more than minimal dropout. |
Compared with MAX1776EUT50-T and TPS62231DRYT, the MAX1836EUT50#TG16 uniquely delivers 120mV dropout at 100mA while maintaining 12μA quiescent current - making it optimal for legacy 9V battery systems where end-of-life voltage is critical and board space is constrained.
Availability
MAX1836EUT50#TG16 is available at Aetrix Electronics and suitable for 9V battery systems, industrial control supplies, and distributed power systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX1836EUT50#TG16 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and computing markets.
The MAX1836/MAX1837 product line was designed specifically for low-power, high-input-voltage step-down conversion in battery-powered and space-constrained industrial equipment - emphasizing ultra-low dropout, minimal quiescent current, and integrated MOSFET simplicity.
FAQ
What is the preset output voltage of the MAX1836EUT50#TG16?
The MAX1836EUT50#TG16 is factory-trimmed for a precise 5.00V ±4% output voltage (4.80V–5.20V) when FB is connected to GND and OUT is connected to the regulated output. This preset is verified across the full -40°C to +85°C operating temperature range and under load currents from 0 to 125mA.
Can the MAX1836EUT50#TG16 operate with input voltages below 4.5V?
No - the MAX1836EUT50#TG16 has a hard input undervoltage lockout (UVLO) threshold of 3.55V (rising) to 4.4V (falling). Below ~4.5V, the device will not start or sustain regulation. For sub-4.5V operation, consider alternatives like the MAX17552 or TPS62840, which support 1.8V–6.5V inputs.
How does the MAX1836EUT50#TG16 achieve 100% duty cycle, and what is its practical benefit?
The MAX1836EUT50#TG16 achieves 100% duty cycle by holding its internal p-channel MOSFET fully on when the output approaches dropout - bypassing switching entirely. This yields a measured 120mV dropout at 100mA, allowing continued regulation down to VIN = 5.12V, which extends usable battery life in 9V systems by up to 25% versus conventional buck converters.
What is the recommended inductor value for the MAX1836EUT50#TG16 in a 5V-output application?
For the MAX1836EUT50#TG16 delivering 5V from a 9–12V input, a 47µH inductor (e.g., Sumida CDRH5D28-470) is recommended. Inductor saturation current must exceed 312mA (typical ILIM), and DC resistance should be significantly less than the MOSFET's 1.1Ω RDS(ON) to minimize dropout and maintain efficiency above 90%.
Does the MAX1836EUT50#TG16 require an external catch diode, and what type is recommended?
Yes - the MAX1836EUT50#TG16 requires an external Schottky diode (e.g., Nihon EP05Q03L) connected between LX and GND. Schottky diodes are mandatory due to their fast recovery and low forward voltage (<0.4V), minimizing conduction loss and ensuring stable DCM operation. Silicon rectifiers are unsuitable due to reverse recovery issues.
MAX1836EUT50#TG16 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 24V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 125mA
- Frequency - Switching:
- -
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX1836EUT50#TG16 FAQ
1.How can I place an order for MAX1836EUT50#TG16 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1836EUT50#TG16 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 MAX1836EUT50#TG16 reliable?
The price and inventory of MAX1836EUT50#TG16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1836EUT50#TG16 is usually 5 days.
3.What payment methods are accepted for MAX1836EUT50#TG16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1836EUT50#TG16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1836EUT50#TG16?
MAX1836EUT50#TG16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1836EUT50#TG16 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 MAX1836EUT50#TG16?
For technical support, including MAX1836EUT50#TG16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1836EUT50#TG16 requirements.
6.How does Aetrix verify that MAX1836EUT50#TG16 is sourced from the original manufacturer or authorized distributors?
All MAX1836EUT50#TG16 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 MAX1836EUT50#TG16 meets industry standards.
7.What is the process for return or replacement of MAX1836EUT50#TG16?
All MAX1836EUT50#TG16 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1836EUT50#TG16, 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 MAX1836EUT50#TG16 part is unused and in its original packaging.
Return procedure for MAX1836EUT50#TG16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1836EUT50#TG16 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
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…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
