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Analog Devices Inc./Maxim Integrated MAX1833ETT30
- Part No.:
- MAX1833ETT30
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX1833ETT30.pdf
- Description:
- IC REG BOOST 3V 150MA 6TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,533
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Product details
Overview
MAX1833ETT30 from Maxim Integrated is a high-efficiency, fixed-output 3.0V step-up DC-DC converter with reverse battery protection, synchronous rectification, and 4µA quiescent current. It operates from +1.5V to +5.5V input, delivers up to 150mA load current, and uses a 3mm × 3mm thin DFN-6 package - ideal for space-constrained battery-powered medical diagnostics and remote wireless transmitters.
For engineers reviewing the MAX1833ETT30 datasheet, MAX1833ETT30 pinout, MAX1833ETT30 application, or MAX1833ETT30 equivalent, this page provides verified technical context, confirmed pin functions, real-world use cases in low-power portable systems, and validated alternative options for 3.0V boost conversion with reverse polarity protection.
Technical Context
The MAX1833ETT30 implements a current-limited, oscillator-free control scheme with 5µs maximum on-time and zero-crossing detection for synchronous rectification. Its internal N-channel switch (0.5Ω typ RDS(ON)) and P-channel rectifier eliminate external diodes while enabling >90% efficiency at 40mA with 2V input.
Reverse battery protection is achieved via an integrated N-channel MOSFET that disconnects BATT from LX and OUT when input polarity is inverted - protecting both IC and downstream circuitry without external components. In shutdown, BATT connects directly to OUT through the internal PFET and inductor, enabling backup power for RTC or SRAM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2.5% over -40°C to +85°C - ensures stable supply for 3.0V logic and sensors without feedback resistors. |
| Input Voltage Range | +1.5V to +5.5V - supports two alkaline/NiMH cells or single Li+ cell without external regulation. |
| Max Output Current | 150mA at VBATT = +2V - sufficient for powering RF transceivers, microcontrollers, and display drivers in handheld instruments. |
| Quiescent Current | 4µA typical - minimizes battery drain during standby in always-on medical or monitoring devices. |
| Shutdown Current | <1µA into OUT, 0.001µA into BATT - enables multi-year operation on coin-cell batteries. |
| Efficiency | 90% at VBATT = +2V, VOUT = +3.0V, ILOAD = 40mA - reduces thermal stress and extends runtime in sealed enclosures. |
| RST Threshold | 2.717V (typ) falling-edge trip - provides reliable power-on reset for microcontrollers when output drops 10% below regulation. |
Pinout & Package
MAX1833ETT30 is housed in a 3mm × 3mm, 0.8mm-thick exposed-pad TDFN-6 package (JEDEC MO-229 WEEA, pkg code T633-2), optimized for thermal dissipation in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SHDN | Shutdown control input | Active-high logic; 1.228V threshold enables low-battery cutoff; reverse-battery protected; connects BATT to OUT in shutdown. |
| 2 BATT | Battery input connection | Reverse-polarity protected input; accepts +1.5V to +5.5V; source for boost conversion and backup path. |
| 3 GND | Power ground reference | Common return for all internal circuits; must be soldered to exposed pad for thermal and electrical integrity. |
| 4 LX | Switch node | Drain of N-channel switch and P-channel synchronous rectifier; connects to external inductor; reverse-battery protected. |
| 5 OUT | Regulated output | 3.0V fixed output; bootstrapped supply for internal circuitry; sense point for regulation and RST monitoring. |
| 6 RST | Open-drain power-on reset | Pulls low when VOUT falls 10% below 3.0V; high-impedance in shutdown; requires external pullup to OUT. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse battery protection | Integrated N-MOSFET blocks reverse current at BATT pin - eliminates need for external protection diodes or FETs. |
| Synchronous rectification | Internal P-channel MOSFET replaces Schottky diode - improves efficiency by ~8% and reduces board area vs. asynchronous designs. |
| BATT-to-OUT path in shutdown | Internal PFET + inductor forms low-dropout backup path - powers RTC/SRAM without voltage loss across external diode. |
| Ultra-low quiescent current | 4µA operating current - extends battery life in intermittent-use devices like pagers and remote sensors. |
| Power-on reset (RST) | Dedicated open-drain output with 2.717V falling-edge threshold - ensures clean MCU initialization without external supervisor IC. |
Applications
| Medical Diagnostic Equipment | Pagers |
|---|---|
Use Scenario: Portable glucose meters and handheld ECG monitors powered by two AA/AAA alkaline cells. IC Role / Device Role / Timing Role: Step-up converter generating stable 3.0V rail for analog front-end, ADC, and LCD controller. Use Value: Reverse battery protection prevents damage during field battery replacement; 4µA quiescent current enables multi-month shelf life. |
Use Scenario: Two-way alphanumeric pagers with LED backlight and RF receiver. IC Role / Device Role / Timing Role: Primary 3.0V supply for baseband processor and display driver from single Li+ cell. Use Value: 90% efficiency at light loads extends talk time; RST output ensures reliable boot after battery insertion. |
| Hand-Held Instruments | Remote Wireless Transmitters |
Use Scenario: Battery-operated multimeters and thermal imagers using two NiMH cells. IC Role / Device Role / Timing Role: Boost regulator powering 3.0V precision op-amps and digital logic. Use Value: Fixed 3.0V output eliminates feedback resistor network - reduces BOM count and layout complexity. |
Use Scenario: Zigbee/ISM-band sensor nodes deployed in industrial environments. IC Role / Device Role / Timing Role: 3.0V supply for RF transceiver and microcontroller from primary alkaline battery. Use Value: Shutdown current <1µA enables >10-year battery life in sleep-mode applications; reverse polarity tolerance prevents field failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1833EUT-T | Same 3.3V output, SOT23-6 package (2.9mm × 1.6mm), higher thermal resistance (9.1mW/°C derating). | Larger footprint and lower power handling - suitable only for <100mA loads in less thermally constrained designs. | Select MAX1833EUT-T only if SOT23 compatibility or legacy layout reuse is required; not drop-in due to different pinout and output voltage. |
| TPS61022DRVR | 3.3V fixed output, 2.5V–5.5V input, 1.2A switch current, but no reverse battery protection or BATT-to-OUT shutdown path. | Lacks reverse polarity protection and backup power capability - requires external diode or FET for those functions. | Choose TPS61022DRVR only when higher output current (>150mA) is needed and reverse protection is handled externally. |
Compared with MAX1833EUT-T and TPS61022DRVR, the MAX1833ETT30 uniquely combines 3.0V fixed output, reverse battery protection, and BATT-to-OUT backup in a thermally efficient 3mm × 3mm DFN - making it the only option for compact, safety-critical, battery-backed portable systems requiring all three features.
Availability
MAX1833ETT30 is available at Aetrix Electronics and suitable for medical diagnostic equipment, remote wireless transmitters, and hand-held instruments requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MAX1833ETT30 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 power management, analog, and mixed-signal ICs for industrial, medical, and portable applications.
The MAX1832–MAX1835 family was designed specifically for ultra-low-power, reverse-polarity-protected boost conversion in space-constrained battery-powered devices - addressing reliability and efficiency gaps in legacy discrete solutions.
FAQ
What is the output voltage accuracy of the MAX1833ETT30 over temperature?
The MAX1833ETT30 delivers a fixed 3.0V output with ±2.5% tolerance over the full -40°C to +85°C operating range, as specified in the Electrical Characteristics table (2.925V to 3.075V). This accuracy is maintained without external feedback components, simplifying design for 3.0V logic and sensor interfaces where tight regulation is critical.
Does the MAX1833ETT30 provide reverse battery protection, and how does it work?
Yes, the MAX1833ETT30 includes proprietary reverse battery protection. When input polarity is inverted, an internal N-channel MOSFET turns off, blocking current flow into BATT, LX, and OUT pins. This protects both the IC and downstream circuitry without external components - a key differentiator versus standard boost converters.
Can the MAX1833ETT30 be used to power a real-time clock (RTC) during shutdown?
Yes. When SHDN is pulled low, the MAX1833ETT30 connects BATT directly to OUT through its internal PFET and external inductor, providing a low-dropout backup path. This allows the input battery to power RTC or SRAM without the 0.3V–0.4V forward drop of an external diode - a core feature confirmed in the Selector Guide and Detailed Description sections.
What is the function of the RST pin on the MAX1833ETT30?
The RST pin on the MAX1833ETT30 is an open-drain power-on reset output that pulls low when VOUT falls 10% below its regulated 3.0V level (i.e., below 2.7V). It remains high-impedance during shutdown and requires an external pullup resistor to OUT. This provides reliable MCU reset signaling without adding a separate supervisor IC.
What package type and dimensions does the MAX1833ETT30 use?
The MAX1833ETT30 uses a 3mm × 3mm, 0.8mm-thick thin DFN package (JEDEC MO-229 WEEA, pkg code T633-2) with 6 pins and an exposed thermal pad. Its footprint is defined in drawing 21-0137I, and the package supports high thermal performance in compact PCB layouts - distinct from the SOT23-6 used by MAX1833EUT-T.
MAX1833ETT30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 150mA
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN-EP (3x3)
MAX1833ETT30 FAQ
1.How can I place an order for MAX1833ETT30 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1833ETT30 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 MAX1833ETT30 reliable?
The price and inventory of MAX1833ETT30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1833ETT30 is usually 5 days.
3.What payment methods are accepted for MAX1833ETT30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1833ETT30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1833ETT30?
MAX1833ETT30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1833ETT30 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 MAX1833ETT30?
For technical support, including MAX1833ETT30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1833ETT30 requirements.
6.How does Aetrix verify that MAX1833ETT30 is sourced from the original manufacturer or authorized distributors?
All MAX1833ETT30 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 MAX1833ETT30 meets industry standards.
7.What is the process for return or replacement of MAX1833ETT30?
All MAX1833ETT30 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1833ETT30, 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 MAX1833ETT30 part is unused and in its original packaging.
Return procedure for MAX1833ETT30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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