My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1833EUT+T
- Part No.:
- MAX1833EUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX1833EUT+T.pdf
- Description:
- IC REG BOOST 3.3V 150MA SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:2,135
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1833EUT+T 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+T datasheet, MAX1833EUT+T pinout, MAX1833EUT+T application, or MAX1833EUT+T equivalent, key selection criteria include its SOT23-6 package, 3.3V ±1.2% output accuracy over temperature, shutdown-mode battery-to-output connection for backup power, and integrated RST open-drain reset signal with 2.98V falling-edge threshold.
Technical Context
The MAX1833EUT+T uses a current-limited, oscillator-free control scheme with programmable on-time (3.5–6.5µs) and zero-crossing detection to regulate output voltage without external timing components. Its internal N-channel switch (0.4Ω typ) and P-channel synchronous rectifier eliminate external diodes while enabling >90% efficiency at 40mA load with 2V input.
Reverse battery protection is implemented via a proprietary N-channel MOSFET gate control that disconnects BATT from LX and OUT when input polarity is inverted - protecting both IC and downstream circuitry. In shutdown, the internal PFET connects BATT directly to OUT through the inductor, providing low-dropout backup power without external diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1.2% over -40°C to +85°C - ensures stable supply for 3.3V logic and sensors without feedback resistors. |
| Input Voltage Range | +1.5V to +5.5V - supports single Li+ cell, two alkaline/NiMH cells, or regulated intermediate rails. |
| Max Output Current | 150mA at VBATT = +2V - sufficient for microcontrollers, RF transceivers, and small displays in portable devices. |
| Quiescent Current | 4μA typical - minimizes battery drain during light-load operation in always-on monitoring systems. |
| Shutdown Current | <1μA into BATT - enables multi-year battery life in low-duty-cycle applications like remote sensors. |
| RST Threshold | 2.98V (falling edge, ±0.14V over temp) - provides reliable power-on reset for 3.3V systems before brownout. |
| SHDN Threshold | 1.228V rising edge - allows precise low-battery cutoff using simple resistor divider without external supervisor. |
Pinout & Package
MAX1833EUT+T is housed in a RoHS-compliant 6-pin SOT23-6 package (3.0mm × 1.7mm × 1.3mm), optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-high enable with voltage threshold | Logic input with 1.228V rising-edge trip; connects BATT to OUT in shutdown for backup power; reverse-battery protected. |
| 2 - BATT | Battery input with reverse polarity protection | Accepts +1.5V to +5.5V; internal N-MOSFET blocks current if connected backward; rated to -6V absolute max. |
| 3 - GND | Power and signal reference ground | Common return path for all internal circuits; must be tied directly to PCB ground plane per layout guidelines. |
| 4 - LX | Switch node for external inductor | Drain of internal N-MOSFET and P-MOSFET; connects to inductor; reverse-battery protected; handles 1A peak current. |
| 5 - OUT | Regulated 3.3V output and bootstrap supply | Delivers up to 150mA; powers internal circuitry; serves as RST pullup source; connects to BATT in shutdown mode. |
| 6 - RST | Open-drain power-on reset output | Pulls low when VOUT falls 10% below regulation (≤2.97V); high-impedance in shutdown; requires external pullup to OUT. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous rectifier | Eliminates external Schottky diode, reducing board area by ~2mm² and improving efficiency to >90% at 40mA. |
| Reverse battery protection | Proprietary N-MOSFET gate control blocks reverse current at BATT, LX, and SHDN pins - no external FETs or diodes required. |
| BATT-to-OUT connection in shutdown | Internal PFET enables direct battery backup for RTC or SRAM without forward-voltage drop - extends system uptime. |
| Power-on reset (RST) output | Open-drain signal with accurate 2.98V falling-edge threshold - simplifies system-level reset sequencing for 3.3V microcontrollers. |
| Ultra-low quiescent current | 4μA typical supply current - preserves battery capacity in intermittently active devices like handheld instruments. |
Applications
| Medical Diagnostic Equipment | Remote Wireless Transmitters |
|---|---|
|
Use Scenario: Portable glucose meters and pulse oximeters powered by two AA alkaline cells. IC Role / Device Role / Timing Role: Step-up regulator generating stable 3.3V for ADC, display, and BLE radio from declining battery voltage. Use Value: Reverse battery protection prevents damage during field replacement; 4μA quiescent current extends battery life beyond 12 months. |
Use Scenario: Battery-operated LoRaWAN sensor nodes deployed in industrial environments. IC Role / Device Role / Timing Role: Primary 3.3V supply for MCU and sub-GHz transceiver, activated only during scheduled transmission bursts. Use Value: Shutdown current <1μA enables 10-year battery life; RST output ensures clean MCU reset after cold start from depleted battery. |
| Digital Cameras | Hand-Held Instruments |
|
Use Scenario: Compact digital cameras using single Li+ cell with flash LED requiring 3.3V logic and analog front-end. IC Role / Device Role / Timing Role: Main 3.3V rail generator supporting image sensor interface, memory, and UI controller. Use Value: 150mA output supports brief high-current flash charging; SOT23-6 footprint fits tight camera module layouts. |
Use Scenario: Handheld multimeters and thermal imagers with dual-cell alkaline supply and LCD display. IC Role / Device Role / Timing Role: Fixed 3.3V source for precision ADC, touch controller, and backlight driver. Use Value: 3.3V ±1.2% accuracy maintains measurement integrity; shutdown-mode BATT→OUT path powers real-time clock during sleep. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61200DRCR | Fixed 3.3V output, 3.3V ±2% tolerance, 350mA max output, no RST pin, no reverse battery protection. | Lacks reverse polarity protection and power-on reset - requires external supervision circuitry for safety-critical use. | Select when higher output current is needed and reverse protection is handled externally; not drop-in for MAX1833EUT+T. |
| LT1945EMS8#TRPBF | Adjustable output (1.25V–15V), 200mA max, no RST, no reverse battery protection, 12V abs max on LX. | Requires external feedback resistors and reverse-protection FETs; unsuitable for direct replacement where reverse protection is mandatory. | Choose for variable-output designs where MAX1833EUT+T's fixed 3.3V and integrated protection are unnecessary. |
Compared with TPS61200DRCR and LT1945EMS8#TRPBF, MAX1833EUT+T uniquely combines reverse battery protection, RST output, and ultra-low shutdown current in a 6-pin SOT23 - eliminating external components required by alternatives for safe, compact, and long-life battery operation.
Availability
MAX1833EUT+T 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 guaranteed RoHS compliance.
Supply support for MAX1833EUT+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 applications.
The MAX1832–MAX1835 family was designed specifically for ultra-low-power, reverse-polarity-protected boost conversion in space-constrained portable electronics - addressing reliability and efficiency gaps in legacy discrete solutions.
FAQ
What is the output voltage tolerance of the MAX1833EUT+T over temperature?
The MAX1833EUT+T delivers a fixed 3.3V output with ±1.2% tolerance across the full -40°C to +85°C operating range. At +25°C, the typical output is 3.290V, with min/max limits of 3.225V and 3.355V respectively - ensuring compatibility with 3.3V logic families without external trimming.
Does the MAX1833EUT+T provide reverse battery protection on all pins?
Yes, the MAX1833EUT+T provides reverse battery protection on BATT, LX, SHDN, and OUT pins - blocking current flow when input polarity is inverted. This proprietary feature protects both the IC and downstream circuitry without external components, unlike most competing boost converters.
How does the RST pin on the MAX1833EUT+T function in shutdown mode?
In shutdown mode, the RST pin of the MAX1833EUT+T is placed in high-impedance state and does not drive any signal. It only becomes active (pulling low) when the device is enabled and VOUT drops below 2.97V (10% below nominal 3.3V), making it suitable for power-on reset but not for shutdown monitoring.
Can the MAX1833EUT+T be used with a single 1.5V alkaline cell?
No - the MAX1833EUT+T requires a minimum input voltage of +1.5V to operate, but its startup voltage is 1.22V at +25°C and 1.24V over temperature. A fresh 1.5V alkaline cell may start the device, but performance degrades rapidly as voltage drops; two alkaline cells (+3.0V nominal) are recommended for reliable operation.
What is the maximum continuous output current of the MAX1833EUT+T at 2.0V input?
At +2.0V input and +3.3V output, the MAX1833EUT+T delivers up to 150mA of continuous load current - verified across -40°C to +85°C. This value assumes proper layout, 10µH inductor, and 10µF ceramic output capacitor; derating applies above +70°C ambient due to thermal limits.
MAX1833EUT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- 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):
- 3.3V
- 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:
- SOT-6
MAX1833EUT+T FAQ
1.How can I place an order for MAX1833EUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1833EUT+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 MAX1833EUT+T reliable?
The price and inventory of MAX1833EUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1833EUT+T is usually 5 days.
3.What payment methods are accepted for MAX1833EUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1833EUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1833EUT+T?
MAX1833EUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1833EUT+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 MAX1833EUT+T?
For technical support, including MAX1833EUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1833EUT+T requirements.
6.How does Aetrix verify that MAX1833EUT+T is sourced from the original manufacturer or authorized distributors?
All MAX1833EUT+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 MAX1833EUT+T meets industry standards.
7.What is the process for return or replacement of MAX1833EUT+T?
All MAX1833EUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1833EUT+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 MAX1833EUT+T part is unused and in its original packaging.
Return procedure for MAX1833EUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1833EUT+T 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…
