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Analog Devices Inc./Maxim Integrated MAX1832EUT-T
- Part No.:
- MAX1832EUT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX1832EUT-T.pdf
- Description:
- IC REG BOOST ADJ 150MA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:24,150
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Product details
Overview
MAX1832EUT-T from Maxim Integrated is an adjustable-output, high-efficiency step-up DC-DC converter with reverse battery protection, synchronous rectification, and shutdown-controlled backup power path. It operates from +1.5V to +5.5V input, delivers up to 150mA load current, and features 4µA quiescent current-enabling use in dual-alkaline, NiMH, or single-Li+ battery systems for portable medical diagnostics and remote transmitters.
For engineers reviewing the MAX1832EUT-T datasheet, MAX1832EUT-T pinout, MAX1832EUT-T application, or MAX1832EUT-T equivalent, key selection criteria include its adjustable 2.0V–5.5V output, BATT-to-OUT connection in shutdown, reverse-battery-protected SHDN/LX/BATT pins, and SOT23-6 footprint compatibility with space-constrained handheld instruments and PC cards.
Technical Context
The MAX1832EUT-T 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, reducing losses and board area while maintaining >90% efficiency at 40mA load with 2V input and 3.3V output.
Reverse battery protection is implemented via a proprietary N-channel MOSFET that opens under reverse polarity, isolating BATT, LX, and OUT terminals. In shutdown, the internal P-channel FET connects BATT directly to OUT through the inductor-enabling zero-drop backup supply for RTC or SRAM without external diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | Adjustable 2.0V to 5.5V via FB resistor divider-supports system-level voltage scaling across diverse logic families. |
| Input Voltage Range | +1.5V to +5.5V-compatible with two alkaline/NiMH cells or one Li+ cell without external regulation. |
| Max Output Current | 150mA at VBATT = +2V, VOUT = +3.3V-sufficient for powering microcontrollers, sensors, and RF transceivers in low-power modes. |
| Quiescent Current | 4µA typical-minimizes battery drain during light-load operation in always-on monitoring applications. |
| Shutdown Supply Current | <1µA into OUT, 0.001µA into BATT-enables multi-year shelf life in battery-backed real-time clock circuits. |
| FB Trip Voltage | 1.228V ±0.024V (–40°C to +85°C)-provides stable feedback reference for precise output regulation across temperature. |
| SHDN Threshold | 1.228V rising-edge threshold with 20mV hysteresis-enables accurate low-battery cutoff using simple resistor divider. |
Pinout & Package
MAX1832EUT-T is housed in a 6-pin SOT23-6 package (drawing 21-0058I, pkg code U6F-6), measuring 2.9mm × 1.6mm × 1.1mm with gull-wing leads and exposed pad not present. The compact footprint supports high-density PCB layouts in space-critical portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Enable/Shutdown control input | Active-high logic input with 1.228V threshold; provides reverse-battery protection and enables low-battery cutoff or backup power activation. |
| 2 - BATT | Battery input terminal | Reverse-battery-protected input; connects directly to internal N-channel protection FET and synchronous rectifier driver. |
| 3 - GND | Power ground reference | Common return for all internal circuitry; must be tied to low-impedance ground plane to minimize noise and maximize efficiency. |
| 4 - LX | Switch node connection | Drain of N-channel main switch and P-channel synchronous rectifier; requires short, low-inductance trace to external inductor. |
| 5 - OUT | Regulated output voltage | Main power output and internal bootstrapped supply; connects to output capacitor and load; serves as backup source in shutdown. |
| 6 - FB | Feedback input | High-impedance (≤20nA) input sensing output voltage via resistor divider; sets regulated output per VOUT = 1.228V × (1 + R1/R2). |
Key Features
| Feature | Design Value |
|---|---|
| Reverse Battery Protection | Proprietary N-channel MOSFET isolation prevents damage to IC, battery, and downstream circuitry when input polarity is reversed. |
| Synchronous Rectification | Integrated P-channel rectifier eliminates external Schottky diode-reducing BOM count, board area, and conduction losses. |
| BATT-to-OUT Backup Path | In shutdown, internal P-FET connects BATT to OUT through inductor-enabling zero-forward-drop backup supply for RTC/SRAM. |
| Ultra-Low Quiescent Current | 4µA typical supply current ensures minimal battery depletion during standby, extending operational lifetime in intermittent-use devices. |
| Current-Limited Control Scheme | No oscillator required; cycle-by-cycle current limiting (525mA max) and 5µs max on-time enable wide-load-range efficiency without external timing components. |
Applications
| Medical Diagnostic Equipment | Pagers |
|---|---|
Use Scenario: Portable glucose meters and handheld ultrasound probes powered by two AA alkaline cells. IC Role / Device Role / Timing Role: Step-up regulator generating stable 3.3V for microcontroller, ADC, and display backlight from declining battery voltage. Use Value: Reverse battery protection prevents field failure due to incorrect battery insertion; 4µA quiescent current extends battery life between calibrations. |
Use Scenario: Two-way pagers operating on single Li+ cell with tight size constraints. IC Role / Device Role / Timing Role: Adjustable boost converter delivering 5.0V to RF front-end and 3.3V to baseband processor via dual-output design. Use Value: Shutdown-mode BATT-to-OUT path powers real-time clock and memory retention without added diode drop or leakage. |
| Hand-Held Instruments | Remote Wireless Transmitters |
Use Scenario: Battery-powered multimeters and thermal imagers requiring clean, regulated 5V for precision analog front-ends. IC Role / Device Role / Timing Role: Primary DC-DC converter supplying isolated 5.0V rail from 2×NiMH cells; FB pin enables fine-tuned output calibration. Use Value: Synchronous rectification achieves >90% efficiency at 40mA load-reducing heat rise and enabling smaller heatsinking in sealed enclosures. |
Use Scenario: Solar-charged sensor nodes transmitting data via sub-GHz RF modules in remote industrial sites. IC Role / Device Role / Timing Role: Boost regulator powering 3.3V RF transceiver and microcontroller from 2.0–3.6V supercapacitor bank. Use Value: 1.5V startup capability allows operation down to near-dead battery; <1µA shutdown current enables multi-month sleep cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17222ELT+ | Fixed 3.3V output; 1.8V min input; 500mA peak switch current; integrated soft-start; no reverse battery protection. | Lacks reverse polarity protection and BATT-to-OUT backup path; suited for cost-sensitive, non-replaceable battery applications. | Select MAX17222ELT+ only if fixed 3.3V output suffices and reverse-battery risk is mitigated externally. |
| TPS61099YFFR | Adjustable 1.8–5.5V output; 0.7V min input; 400mA peak current; 300nA shutdown current; no reverse battery protection. | Superior ultra-low-power shutdown but no reverse polarity safeguard; requires external diode for backup path. | Choose TPS61099YFFR when nanoscale shutdown current dominates over reverse-protection requirements. |
Compared with MAX1832EUT-T, MAX17222ELT+ offers higher peak current but sacrifices reverse battery protection and adjustable output, while TPS61099YFFR delivers lower shutdown current yet lacks integrated backup switching-making MAX1832EUT-T uniquely suited for field-serviceable, polarity-risk-prone battery systems.
Availability
MAX1832EUT-T is available at Aetrix Electronics and suitable for medical diagnostic equipment, remote wireless transmitters, and hand-held instruments requiring stable component supply with long-term lifecycle support and RoHS-compliant sourcing options.
Supply support for MAX1832EUT-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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications markets.
The MAX1832EUT-T belongs to Maxim's high-efficiency boost converter family designed specifically for battery-powered portable electronics where reverse polarity resilience, ultra-low quiescent current, and compact SOT23 packaging are critical.
FAQ
What is the output voltage range of the MAX1832EUT-T?
The MAX1832EUT-T features an adjustable output voltage range of +2.0V to +5.5V, set via an external resistor divider connected to the FB pin. The internal feedback reference is precisely 1.228V, allowing accurate regulation across temperature and load conditions. This flexibility makes the MAX1832EUT-T suitable for powering diverse logic families and analog subsystems from a single battery source.
How does the MAX1832EUT-T provide reverse battery protection?
The MAX1832EUT-T implements proprietary reverse battery protection using an internal N-channel MOSFET that automatically disconnects BATT, LX, and OUT terminals when input polarity is reversed. This prevents damage to the IC, battery, and downstream circuitry without requiring external components. Unlike passive diode solutions, this active method introduces no forward voltage drop during normal operation.
What happens to the output during shutdown mode of the MAX1832EUT-T?
During shutdown (SHDN = low), the MAX1832EUT-T activates an internal P-channel FET to connect the BATT input directly to the OUT pin through the external inductor. This creates a zero-forward-drop backup power path-ideal for maintaining real-time clock, SRAM, or microcontroller state without external diodes. The shutdown current into BATT is typically 0.001µA, preserving battery life.
Can the MAX1832EUT-T operate from a single lithium-ion cell?
Yes, the MAX1832EUT-T operates from a +1.5V to +5.5V input range, fully covering the discharge curve of a single Li+ cell (4.2V to ~2.7V). Its 1.5V startup voltage ensures functionality even as the cell depletes, and its 4µA quiescent current minimizes parasitic drain-making it well-suited for Li+-powered portable devices where runtime and reliability are critical.
What package type is used for the MAX1832EUT-T?
The MAX1832EUT-T is packaged in a 6-pin SOT23-6 (U6F-6) outline, measuring 2.9mm × 1.6mm × 1.1mm with gull-wing leads. This miniature surface-mount package enables high-density PCB layouts in space-constrained applications such as pagers, digital cameras, and handheld test equipment-without requiring thermal pads or complex assembly processes.
MAX1832EUT-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- 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-23-6
MAX1832EUT-T FAQ
1.How can I place an order for MAX1832EUT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1832EUT-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 MAX1832EUT-T reliable?
The price and inventory of MAX1832EUT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1832EUT-T is usually 5 days.
3.What payment methods are accepted for MAX1832EUT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1832EUT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1832EUT-T?
MAX1832EUT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1832EUT-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 MAX1832EUT-T?
For technical support, including MAX1832EUT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1832EUT-T requirements.
6.How does Aetrix verify that MAX1832EUT-T is sourced from the original manufacturer or authorized distributors?
All MAX1832EUT-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 MAX1832EUT-T meets industry standards.
7.What is the process for return or replacement of MAX1832EUT-T?
All MAX1832EUT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1832EUT-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 MAX1832EUT-T part is unused and in its original packaging.
Return procedure for MAX1832EUT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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