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Analog Devices Inc./Maxim Integrated MAX1833EUT#G16
- Part No.:
- MAX1833EUT#G16
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX1833EUT#G16.pdf
- Description:
- IC REG BOOST 3.3V 150MA SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:4,501
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Product details
Overview
The MAX1833EUT#G16 from Maxim Integrated is a high-efficiency, fixed-output 3.3V step-up DC-DC converter with reverse battery protection, synchronous rectification, and RST power-on reset output. It operates from +1.5V to +5.5V input, delivers up to 150mA load current, and features 4µA quiescent current - ideal for battery-powered medical diagnostics and remote wireless transmitters.
For engineers reviewing the MAX1833EUT#G16 datasheet, MAX1833EUT#G16 pinout, MAX1833EUT#G16 application, or MAX1833EUT#G16 equivalent, key selection criteria include its SOT23-6 package, integrated PFET/NFET switching, shutdown-mode battery-to-output connection, and ±1.5% output voltage accuracy over temperature.
Technical Context
The MAX1833EUT#G16 uses a current-limited, oscillator-free control scheme with programmable 5µs maximum on-time and zero-crossing detection for synchronous rectification. Its internal N-channel switch (0.5Ω typ) and P-channel rectifier eliminate external diodes while enabling >90% efficiency at 40mA with 2V input.
Reverse battery protection is implemented via a dedicated N-channel MOSFET that disconnects BATT from LX and GND when polarity is inverted. In shutdown, the internal PFET connects BATT to OUT through the inductor - enabling backup power for RTC or SRAM without diode drop.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1.5% over -40°C to +85°C - ensures stable logic supply for 3.3V microcontrollers and sensors. |
| Input Voltage Range | +1.5V to +5.5V - supports single Li+ cell, two alkaline/NiMH cells, or USB-derived inputs. |
| Max Output Current | 150mA at VBATT = +2V - sufficient for low-power RF transceivers and digital camera subsystems. |
| Quiescent Current | 4µA typical - minimizes standby drain in always-on battery applications like pagers and hand-held instruments. |
| Shutdown Current | <1µA into BATT - enables multi-year shelf life in battery-backed real-time clock circuits. |
| Efficiency | 90% at 40mA, VBATT = +2V - reduces thermal load and extends runtime versus diode-based boosters. |
| RST Threshold | 2.98V falling edge (3.3V × 0.9) - provides clean power-on reset signal for microcontroller initialization. |
Pinout & Package
MAX1833EUT#G16 is housed in a 6-pin SOT23-6 package (JEDEC MO-178AA), with 0.95mm pitch, 2.9mm × 1.6mm footprint, and exposed pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-high enable with 1.228V threshold | Enables low-battery cutoff via resistor divider; reverse-battery protected; connects BATT to OUT in shutdown. |
| 2 - BATT | Battery input with reverse polarity protection | Accepts +1.5V to +5.5V; internal N-MOSFET blocks current if connected backwards. |
| 3 - GND | Power and signal reference ground | Must be tied directly to PCB ground plane; critical for noise immunity and thermal performance. |
| 4 - LX | Switch node (N-FET drain / P-FET drain) | Connects to inductor; requires short, low-inductance trace; reverse-battery protected. |
| 5 - OUT | Regulated 3.3V output and bootstrap supply | Delivers up to 150mA; powers internal circuitry; serves as RST pullup source. |
| 6 - RST | Open-drain power-on reset output | Pulls low when VOUT falls 10% below regulation; high-impedance in shutdown; connect to GND if unused. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous rectifier | Eliminates external Schottky diode - saves board space and improves efficiency by reducing forward voltage drop. |
| Reverse battery protection | Proprietary N-MOSFET gate control prevents damage and leakage when batteries are inserted backward. |
| BATT-to-OUT path in shutdown | Internal PFET + inductor forms low-dropout backup path - powers RTC/SRAM without external diode. |
| Power-on reset (RST) output | Guaranteed open-drain assertion at 90% of regulated output - simplifies system-level reset sequencing. |
| Ultra-low quiescent current | 4µA operation enables >1-year battery life in intermittent-use devices like remote transmitters. |
Applications
| Medical Diagnostic Equipment | Pagers |
|---|---|
Use Scenario: Portable glucose meters and handheld ultrasound probes requiring stable 3.3V rail from two AA cells. IC Role / Device Role / Timing Role: Primary step-up regulator providing regulated 3.3V supply for ADC, display driver, and BLE radio. Use Value: Reverse battery protection prevents field failure during battery replacement; 4µA quiescent current extends disposable battery life. |
Use Scenario: Two-way alphanumeric pagers powered by alkaline coin cells with infrequent transmission bursts. IC Role / Device Role / Timing Role: Boost converter supplying 3.3V to LCD controller and RF front-end during message receive/transmit cycles. Use Value: Shutdown-mode BATT-to-OUT path maintains memory state during sleep; RST ensures clean MCU wake-up. |
| Hand-Held Instruments | Remote Wireless Transmitters |
Use Scenario: Battery-operated multimeters and thermal imagers needing precise 3.3V for precision analog front-ends. IC Role / Device Role / Timing Role: Fixed-output DC-DC regulator powering SAR ADC reference, op-amps, and microcontroller core. Use Value: ±1.5% output tolerance ensures measurement accuracy; low-noise switching supports sub-LSB analog integrity. |
Use Scenario: Wireless sensor nodes (temperature/humidity) transmitting data every 5 minutes using sub-GHz ISM band radios. IC Role / Device Role / Timing Role: High-efficiency boost stage delivering 150mA peak current to RF PA during transmit bursts. Use Value: 90% efficiency at 40mA extends 10-year battery life; compact SOT23-6 eases layout in space-constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61200DRCT | Fixed 3.3V output, 3.3V RST threshold, 1.8V min input, no reverse battery protection | Lacks reverse polarity protection; requires external diode for backup path in shutdown | Choose when cost sensitivity outweighs reverse-battery safety requirements and backup functionality is not needed. |
| LT1930ES5#TRMPBF | Adjustable output (1.25–15V), 2.7V min input, no RST, no reverse battery protection | Requires external feedback resistors; no integrated reset; no polarity reversal safeguard | Prefer when variable output voltage is required and system-level reverse protection is already implemented externally. |
Compared with TPS61200DRCT and LT1930ES5#TRMPBF, the MAX1833EUT#G16 uniquely integrates reverse battery protection, RST output, and shutdown-mode BATT-to-OUT conduction - making it the only option among the three qualified for unattended, user-replaceable battery applications where polarity errors must be tolerated.
Availability
MAX1833EUT#G16 is available at Aetrix Electronics and suitable for medical diagnostic equipment, remote wireless transmitters, and hand-held instruments requiring stable component supply across extended production lifecycles.
Supply support for MAX1833EUT#G16 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, medical, and communications applications.
The MAX1832–MAX1835 family was engineered specifically for ultra-low-power, space-constrained battery systems requiring reverse polarity resilience and integrated backup power capability - targeting portable instrumentation and wireless edge devices.
FAQ
What is the output voltage tolerance of the MAX1833EUT#G16 over temperature?
The MAX1833EUT#G16 delivers a fixed 3.3V output with ±1.5% accuracy across the full -40°C to +85°C operating range. This specification is guaranteed by design and confirmed in electrical characterization tables, ensuring reliable operation in portable medical and industrial environments where ambient temperature varies widely. The MAX1833EUT#G16 achieves this stability through laser-trimmed internal feedback and matched transistor ratios in its BiCMOS process.
Does the MAX1833EUT#G16 support backup power functionality during shutdown?
Yes, the MAX1833EUT#G16 connects the BATT input to the OUT pin through an internal PFET and the external inductor when SHDN is low - enabling true backup power for RTC, SRAM, or microcontroller retention without diode voltage drop. This feature is explicitly documented in the Selector Guide and Detailed Description sections of the MAX1833EUT#G16 datasheet, distinguishing it from MAX1834/MAX1835 variants that omit this path.
What is the purpose of the RST pin on the MAX1833EUT#G16?
The RST pin on the MAX1833EUT#G16 is an open-drain power-on reset output that pulls low when the regulated 3.3V output falls below 2.98V (90% of nominal). It provides a hardware reset signal for microcontrollers and logic circuits, eliminating need for external reset ICs. The MAX1833EUT#G16 RST remains high-impedance during shutdown and requires a pullup resistor to OUT - a detail confirmed in Figure 1a and Pin Description table.
Can the MAX1833EUT#G16 operate from a single 1.5V alkaline cell?
No - the MAX1833EUT#G16 requires a minimum input voltage of +1.5V to start up, but its guaranteed startup voltage is 1.24V at -40°C to +85°C per Electrical Characteristics. However, sustained operation below ~1.6V becomes marginal due to reduced headroom for the internal PFET and N-FET drive. The MAX1833EUT#G16 is optimized for two alkaline/NiMH cells (2.0–3.2V) or one Li+ cell (3.0–4.2V), as stated in the Detailed Description section.
How does reverse battery protection work in the MAX1833EUT#G16?
The MAX1833EUT#G16 implements reverse battery protection using a dedicated N-channel MOSFET between BATT and GND/LX. When input polarity is inverted, the gate drive is disabled and the MOSFET remains off - blocking current flow and preventing damage to the IC, inductor, and downstream load. This behavior is verified in Absolute Maximum Ratings (BATT to GND: -6V) and Electrical Characteristics (reverse battery current <10µA), and is a proprietary feature unique to the MAX1832–MAX1835 family.
MAX1833EUT#G16 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 150mA
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX1833EUT#G16 FAQ
1.How can I place an order for MAX1833EUT#G16 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1833EUT#G16 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 MAX1833EUT#G16 reliable?
The price and inventory of MAX1833EUT#G16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1833EUT#G16 is usually 5 days.
3.What payment methods are accepted for MAX1833EUT#G16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1833EUT#G16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1833EUT#G16?
MAX1833EUT#G16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1833EUT#G16 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 MAX1833EUT#G16?
For technical support, including MAX1833EUT#G16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1833EUT#G16 requirements.
6.How does Aetrix verify that MAX1833EUT#G16 is sourced from the original manufacturer or authorized distributors?
All MAX1833EUT#G16 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 MAX1833EUT#G16 meets industry standards.
7.What is the process for return or replacement of MAX1833EUT#G16?
All MAX1833EUT#G16 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1833EUT#G16, 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 MAX1833EUT#G16 part is unused and in its original packaging.
Return procedure for MAX1833EUT#G16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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