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Analog Devices Inc./Maxim Integrated MAX1834EUT#TG16
- Part No.:
- MAX1834EUT#TG16
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX1834EUT#TG16.pdf
- Description:
- IC REG BOOST ADJ 150MA SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:2,293
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Product details
Overview
The MAX1834EUT#TG16 from Maxim Integrated is an adjustable-output, high-efficiency step-up DC-DC converter with reverse battery protection, synchronous rectification, and 6-pin SOT23 packaging. It operates from +1.5V to +5.5V input, delivers up to 150mA output current, maintains 90% efficiency at 40mA load, and features 4μA quiescent current - enabling ultra-low-power operation in battery-backed medical diagnostics and handheld instrumentation.
For engineers reviewing the MAX1834EUT#TG16 datasheet, MAX1834EUT#TG16 pinout, MAX1834EUT#TG16 application, or MAX1834EUT#TG16 equivalent, key selection criteria include its adjustable 2.0V–5.5V output, shutdown-mode output-to-input voltage drop (VBATT − 0.7V), reverse-battery-protected BATT/LX/SHDN pins, and absence of RST functionality - distinguishing it from MAX1833/MAX1835 variants.
Technical Context
The MAX1834EUT#TG16 uses a current-limited, oscillatorless control scheme with 5μs maximum on-time and 525mA N-channel switch current limit. Its internal synchronous rectifier replaces external Schottky diodes by turning on a P-channel MOSFET during inductor discharge, reducing conduction loss and improving efficiency without added components.
Reverse battery protection is implemented via a proprietary N-channel MOSFET gate control that disconnects BATT from LX when input polarity is reversed - protecting both IC and downstream load. In shutdown, the device isolates OUT from BATT (unlike MAX1832/MAX1833), delivering only VBATT − 0.7V at OUT due to PFET body-diode drop, enabling clean backup power separation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | Adjustable 2.0V to 5.5V - set via external resistor divider on FB pin; enables flexible rail generation for mixed-voltage systems. |
| Input Voltage Range | +1.5V to +5.5V - supports single Li+ cell, two alkaline/NiMH cells, or regulated 3.3V/5V supplies. |
| Max Output Current | 150mA at VOUT = +3.3V, VBATT = +2V - sufficient for powering microcontrollers, sensors, and RF transceivers in portable devices. |
| Efficiency | 90% at VBATT = +2V, VOUT = +3.3V, ILOAD = 40mA - minimizes thermal rise and extends battery life in space-constrained applications. |
| Quiescent Current | 4μA - ensures minimal battery drain during light-load or standby operation in always-on monitoring systems. |
| Shutdown Current | <1μA into OUT, 1μA into BATT - enables true zero-power-off state for long-term storage or low-power wake-up architectures. |
| FB Reference Voltage | 1.228V (±0.02V) - high-accuracy feedback threshold enabling precise output regulation across temperature. |
| SHDN Threshold | 1.228V rising-edge threshold with 20mV hysteresis - allows reliable low-battery cutoff using simple resistor divider. |
Pinout & Package
MAX1834EUT#TG16 is housed in a RoHS-compliant 6-pin SOT23-6 package (3.0mm × 1.7mm × 1.3mm), optimized for high-density PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-high enable input | Drives internal logic; 1.228V threshold enables low-battery cutoff; reverse-battery protected; connect to OUT if unused. |
| 2 - BATT | Battery input supply | Accepts +1.5V to +5.5V; reverse-polarity protected via integrated N-MOSFET; connects to LX through inductor in normal operation. |
| 3 - GND | Power and signal reference | Low-impedance return path for switching current and feedback; must be tied directly to ground plane per layout guidelines. |
| 4 - LX | Switch node | Connects to inductor; carries pulsed N-channel drain current and synchronous P-channel rectifier current; reverse-battery protected. |
| 5 - OUT | Regulated output | Delivers adjustable 2.0V–5.5V; serves as bootstrap supply; outputs VBATT − 0.7V in shutdown (no direct BATT–OUT connection). |
| 6 - FB | Feedback input | Senses output via resistor divider; 1.228V reference enables accurate voltage setting; 20nA max bias current minimizes divider error. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse Battery Protection | Proprietary N-MOSFET gate control blocks reverse current at BATT/LX/SHDN pins - eliminates need for external protection diodes or FETs. |
| Synchronous Rectification | Integrated P-channel MOSFET replaces Schottky diode - reduces forward drop from ~0.4V to <0.1V, boosting efficiency and eliminating thermal hotspots. |
| No External Diode Required | Full integration of power switches and rectifier eliminates discrete diode footprint, BOM count, and associated layout complexity. |
| Ultra-Low Quiescent Current | 4μA operating supply current - preserves battery capacity in intermittently active devices like remote sensors and wearables. |
| Adjustable Output with Precision FB | 1.228V ±0.02V reference and 20nA max FB bias enable stable 2.0V–5.5V output with <1% regulation error over temperature. |
| Shutdown Output Isolation | VBATT − 0.7V at OUT in shutdown - prevents backfeed from backup sources while maintaining safe, predictable voltage for RTC or SRAM hold. |
Applications
| Medical Diagnostic Handhelds | Remote Wireless Sensor Transmitters |
|---|---|
|
Use Scenario: Portable glucose meters and pulse oximeters powered by two AA alkaline cells requiring stable 3.3V for MCU and analog front-end. IC Role / Device Role / Timing Role: Step-up regulator providing regulated 3.3V output from decaying 1.8V–3.0V battery input; reverse polarity protection prevents damage during field battery swaps. Use Value: 90% efficiency at 40mA extends battery life beyond 12 months; 4μA quiescent current enables multi-year shelf life in unpowered state. |
Use Scenario: Battery-powered LoRaWAN environmental sensor nodes deployed in inaccessible locations with 10-year lifetime targets. IC Role / Device Role / Timing Role: Adjustable boost converter generating 3.6V for RF transceiver from single Li+ cell (2.8V–4.2V); shutdown isolation prevents backup leakage. Use Value: VBATT − 0.7V shutdown output enables direct connection to supercapacitor backup without diode loss; 150mA peak supports burst transmission. |
| Hand-Held Test Instruments | PC Card Local Power Supplies |
|
Use Scenario: Pocket-sized multimeters and oscilloscope probes requiring dual 3.3V and 5.0V rails from two NiMH cells. IC Role / Device Role / Timing Role: Configurable boost converter set to 5.0V output via FB divider; synchronous rectification minimizes heat in sealed plastic enclosures. Use Value: Adjustable 2.0V–5.5V range supports multiple instrument models with one BOM; SOT23-6 footprint saves board area vs. discrete solutions. |
Use Scenario: PCMCIA cards needing isolated 3.3V supply independent of host bus voltage, with reverse polarity tolerance during hot-swap insertion. IC Role / Device Role / Timing Role: Reverse-battery-protected step-up regulator accepting 3.3V or 5.0V host input and delivering clean 3.3V to card logic. Use Value: Built-in protection eliminates risk of card destruction from misinsertion; <1μA shutdown current meets PC Card power-down specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1832EUT+T | Same adjustable output, same SOT23-6 package, but connects BATT directly to OUT in shutdown (VBATT, not VBATT − 0.7V). | Used where backup power must mirror battery voltage exactly (e.g., RTC with no diode drop tolerance). | Select MAX1832EUT+T only if direct BATT-to-OUT path in shutdown is required; otherwise MAX1834EUT#TG16 provides superior isolation. |
| TPS61200DRCR | Adjustable 1.8V–5.5V output, 3.3V fixed option; 6-pin WSON package; 92% peak efficiency; includes soft-start and thermal shutdown. | Lacks reverse battery protection; requires external diode for polarity safety; higher 25μA quiescent current. | Choose TPS61200DRCR for cost-sensitive designs without reverse polarity risk; avoid where battery reversal is possible in field use. |
Compared with MAX1832EUT+T, MAX1834EUT#TG16 trades direct backup connectivity for safer output isolation; compared with TPS61200DRCR, it adds critical reverse-battery robustness at the cost of slightly higher design complexity for feedback setting.
Availability
MAX1834EUT#TG16 is available at Aetrix Electronics and suitable for medical diagnostics, remote wireless transmitters, hand-held instruments, battery backup systems, and local 3.3V/5V supply generation requiring stable component supply, long-lifecycle support, and guaranteed RoHS compliance.
Supply support for MAX1834EUT#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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX1832–MAX1835 family was designed specifically for ultra-low-power, reverse-polarity-robust boost conversion in portable battery-operated equipment - addressing reliability gaps in consumer, medical, and industrial handheld devices.
FAQ
What is the output voltage range of the MAX1834EUT#TG16?
The MAX1834EUT#TG16 features an adjustable output voltage range of +2.0V to +5.5V, set externally using a resistor divider connected to the FB pin. Its 1.228V internal reference voltage enables precise regulation across temperature, supporting common system rails including 3.3V and 5.0V. This flexibility makes MAX1834EUT#TG16 suitable for diverse applications where fixed-output variants cannot meet specific voltage requirements.
Does the MAX1834EUT#TG16 provide reverse battery protection?
Yes, the MAX1834EUT#TG16 incorporates proprietary reverse battery protection on BATT, LX, and SHDN pins. When input polarity is reversed, an internal N-channel MOSFET gate control opens the path, preventing damaging current flow into the IC or load. This eliminates the need for external protection diodes or FETs - a key differentiator from standard boost converters and a critical feature for field-deployed devices where battery insertion errors occur.
How does the MAX1834EUT#TG16 behave in shutdown mode?
In shutdown mode (SHDN pin low), the MAX1834EUT#TG16 disables switching and isolates the output from the battery input - delivering only VBATT − 0.7V at the OUT pin due to the PFET body diode drop. Unlike the MAX1832/MAX1833, it does not create a direct BATT-to-OUT path. This behavior enables safe backup power separation, preventing unwanted current flow from secondary sources such as supercapacitors or coin cells connected at OUT.
Is the MAX1834EUT#TG16 pin-compatible with other devices in the MAX1832–MAX1835 family?
Yes, the MAX1834EUT#TG16 shares identical 6-pin SOT23-6 pinout and footprint with MAX1832EUT+T, MAX1833EUT+T, and MAX1835EUT+T. However, functional differences exist: MAX1834EUT#TG16 lacks RST output (present on MAX1833/MAX1835) and implements VBATT − 0.7V shutdown output (vs. VBATT on MAX1832/MAX1833). These distinctions require schematic review before substitution.
What is the maximum output current capability of the MAX1834EUT#TG16?
The MAX1834EUT#TG16 delivers up to 150mA of continuous output current under typical conditions (VBATT = +2V, VOUT = +3.3V). This rating is supported by its 525mA N-channel switch current limit and 5μs maximum on-time control architecture. Peak current capability depends on input voltage, output voltage, and inductor selection - with higher VBATT enabling greater sustained load current before reaching thermal limits.
MAX1834EUT#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-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 150mA
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX1834EUT#TG16 FAQ
1.How can I place an order for MAX1834EUT#TG16 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1834EUT#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 MAX1834EUT#TG16 reliable?
The price and inventory of MAX1834EUT#TG16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1834EUT#TG16 is usually 5 days.
3.What payment methods are accepted for MAX1834EUT#TG16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1834EUT#TG16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1834EUT#TG16?
MAX1834EUT#TG16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1834EUT#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 MAX1834EUT#TG16?
For technical support, including MAX1834EUT#TG16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1834EUT#TG16 requirements.
6.How does Aetrix verify that MAX1834EUT#TG16 is sourced from the original manufacturer or authorized distributors?
All MAX1834EUT#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 MAX1834EUT#TG16 meets industry standards.
7.What is the process for return or replacement of MAX1834EUT#TG16?
All MAX1834EUT#TG16 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1834EUT#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 MAX1834EUT#TG16 part is unused and in its original packaging.
Return procedure for MAX1834EUT#TG16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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