My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1835EUT#TG16
- Part No.:
- MAX1835EUT#TG16
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX1835EUT#TG16.pdf
- Description:
- IC REG BOOST 3.3V 150MA SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:4,324
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1835EUT#TG16 from Maxim Integrated is a high-efficiency, fixed 3.3V step-up DC-DC converter with reverse battery protection, synchronous rectification, and integrated RST power-on reset output. It operates from +1.5V to +5.5V input, delivers up to 150mA load current, and achieves >90% efficiency in compact SOT23-6 packaging - ideal for battery-powered medical diagnostics and remote wireless transmitters.
For engineers reviewing the MAX1835EUT#TG16 datasheet, MAX1835EUT#TG16 pinout, MAX1835EUT#TG16 application, or MAX1835EUT#TG16 equivalent, key selection criteria include its 3.3V fixed output, <1µA shutdown current, RST open-drain reset threshold (2.98V typ), reverse-battery protected LX/BATT/SHDN pins, and SOT23-6 thermal performance (727mW at +70°C).
Technical Context
The MAX1835EUT#TG16 uses a current-limited, oscillator-free control scheme with 5µs maximum on-time and zero-crossing detection to regulate output without external timing components. Its internal N-channel switch (0.4Ω typ RDS(ON)) and P-channel synchronous rectifier eliminate external diodes while enabling ultra-low quiescent current (4µA).
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. The RST output asserts low when VOUT falls 10% below regulation (2.98V typ), with 100nA leakage and 0.2V low-level drive capability under 1mA sink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2.3% over -40°C to +85°C - ensures stable logic supply for 3.3V microcontrollers without feedback resistors. |
| Input Voltage Range | +1.5V to +5.5V - supports single Li+ cell, two alkaline/NiMH cells, or USB-powered operation. |
| Max Output Current | 150mA at VBATT = +2V - sufficient for powering RF transceivers, sensors, and small displays in portable devices. |
| Efficiency | 90% at VBATT = +2V, VOUT = +3.3V, ILOAD = 40mA - minimizes heat and extends battery life in space-constrained designs. |
| Shutdown Current | <1µA into BATT - enables multi-year shelf life in always-on backup applications like RTCs and SRAM keep-alive. |
| RST Threshold | 2.98V (typ) falling-edge trip - provides precise power-on reset for microcontrollers without external voltage detectors. |
| Package | SOT23-6 (2.9mm × 1.6mm × 1.1mm) - enables high-density PCB layouts in handheld instruments and PC cards. |
Pinout & Package
MAX1835EUT#TG16 is housed in a RoHS-compliant 6-pin SOT23 package with exposed pad (not electrically connected). Thermal resistance θJA = 110°C/W; continuous power dissipation = 727mW at TA = +70°C (derates 9.1mW/°C above).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-high enable with reverse-battery protection | Drives device ON/OFF; 1.228V threshold enables low-battery cutoff; connects to GND for forced shutdown. |
| 2 - BATT | Input battery connection with reverse-polarity blocking | Accepts +1.5V to +5.5V; internal N-MOSFET blocks current if connected backward (-6V absolute max). |
| 3 - GND | Power and signal reference ground | Must be tied directly to PCB ground plane within 5mm of input/output capacitors to minimize noise and ground bounce. |
| 4 - LX | Switch node for external inductor | Connects to drain of internal N-MOSFET and P-MOSFET synchronous rectifier; rated for -6V to +6V transient swing. |
| 5 - OUT | Regulated 3.3V output and bootstrap supply | Delivers up to 150mA; supplies internal circuitry; serves as RST pullup source when configured per datasheet. |
| 6 - RST | Open-drain power-on reset output | Pulls low when VOUT drops 10% below 3.3V; high-impedance in shutdown; requires external pullup to OUT. |
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 series diode or protection IC. |
| Synchronous Rectification | Integrated P-channel MOSFET replaces Schottky diode - reduces forward drop from ~0.3V to <0.1V, boosting efficiency by 5–8%. |
| Ultra-Low Quiescent Current | 4µA operating supply current - preserves battery capacity during light-load standby in pagers and medical sensors. |
| Integrated Power-On Reset | RST output with 2.98V (typ) falling threshold and 100nA leakage - replaces discrete reset IC in microcontroller-based systems. |
| Backup Power Path in Shutdown | No internal PFET conduction path from OUT to BATT - prevents backfeed when using separate backup batteries (e.g., coin-cell RTC). |
Applications
| Medical Diagnostic Equipment | Remote Wireless Transmitters |
|---|---|
|
Use Scenario: Portable blood 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 ADC, display driver, and BLE radio from declining battery voltage. Use Value: Reverse battery protection prevents damage during field battery swaps; 90% efficiency extends single-battery runtime beyond 1000 measurements. |
Use Scenario: Battery-operated LoRaWAN sensor nodes deployed in agricultural monitoring networks. IC Role / Device Role / Timing Role: Primary 3.3V supply for SX1276 transceiver and STM32L0 MCU during periodic 100ms transmit bursts. Use Value: 150mA peak current supports 20dBm RF output; <1µA shutdown current enables 10-year battery life with 1-hour wake intervals. |
| Digital Cameras | Hand-Held Instruments |
|
Use Scenario: Compact action cameras using single Li+ cell with flash LED requiring 3.3V logic and analog bias rails. IC Role / Device Role / Timing Role: Fixed-output boost converter powering image sensor interface, SD card controller, and touch UI processor. Use Value: RST output ensures clean MCU reset at power-on; SOT23-6 footprint fits tight camera module layouts without compromising thermal margin. |
Use Scenario: Handheld multimeters and thermal imagers with dual power sources (rechargeable pack + replaceable AA cells). IC Role / Device Role / Timing Role: Universal 3.3V supply tolerant of reverse-connected batteries during user maintenance. Use Value: Complete reverse polarity protection avoids field failures from incorrect battery insertion; 4µA quiescent current maintains >5-year shelf life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61099YFFR | Fixed 3.3V output, 400mA max, 0.75µA shutdown current, no RST output, no reverse battery protection. | Lacks reverse polarity protection and power-on reset - requires external components for same safety/functionality. | Choose when higher output current is needed and reverse protection is handled externally. |
| LT1945ES5#TRMPBF | Adjustable 2.5V–5.5V output, 100mA max, 2.5µA quiescent, includes RST but no reverse battery protection. | Requires feedback resistors for 3.3V; lacks integrated reverse protection - adds BOM cost and board area. | Prefer when adjustable output is required and system-level reverse protection exists. |
Compared with TPS61099YFFR and LT1945ES5#TRMPBF, MAX1835EUT#TG16 uniquely integrates reverse battery protection and RST in a 6-pin SOT23, eliminating external diodes and reset ICs - reducing total solution size by ≥30% and component count by 2–4 parts in battery-critical portable designs.
Availability
MAX1835EUT#TG16 is available at Aetrix Electronics and suitable for medical diagnostics, remote wireless transmitters, digital cameras, hand-held instruments, and battery backup systems requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
Supply support for MAX1835EUT#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) 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, reverse-polarity-robust boost conversion in space-constrained portable electronics - prioritizing efficiency, protection, and integration over programmability.
FAQ
What is the output voltage tolerance of MAX1835EUT#TG16 across temperature?
The MAX1835EUT#TG16 delivers a fixed 3.3V output with ±2.3% tolerance over 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 reliable 3.3V logic compatibility without external trimming.
Does MAX1835EUT#TG16 provide reverse battery protection on all pins?
Yes, MAX1835EUT#TG16 implements reverse battery protection on BATT, LX, and SHDN pins - limiting reverse current to ≤10µA when VBATT = -3V. This proprietary design protects both the IC and downstream circuitry without external components, unlike most boost converters requiring series diodes or MOSFET controllers.
How does the RST output of MAX1835EUT#TG16 function in shutdown mode?
In shutdown mode, the RST pin of MAX1835EUT#TG16 enters high-impedance state and does not assert. It only becomes active (pulling low) when the device is enabled and VOUT drops 10% below regulation (i.e., below ~2.97V). This behavior ensures clean reset sequencing independent of enable timing.
What is the maximum inductor value recommended for MAX1835EUT#TG16?
The MAX1835EUT#TG16 supports inductors from 4.7µH to 100µH, but 10µH is recommended for optimal balance of size, ripple, and peak current. Larger values reduce output ripple but limit maximum load current - for example, >47µH may restrict 150mA output at low input voltages due to on-time saturation.
Can MAX1835EUT#TG16 be used with a single 1.5V alkaline cell?
Yes, MAX1835EUT#TG16 starts up from as low as +1.24V (min) at -40°C to +85°C and operates continuously down to +1.5V input - making it suitable for single 1.5V alkaline cells. Startup time is <100µs, and efficiency remains >85% at 10mA load even at 1.5V input.
MAX1835EUT#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:
- 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
MAX1835EUT#TG16 FAQ
1.How can I place an order for MAX1835EUT#TG16 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1835EUT#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 MAX1835EUT#TG16 reliable?
The price and inventory of MAX1835EUT#TG16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1835EUT#TG16 is usually 5 days.
3.What payment methods are accepted for MAX1835EUT#TG16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1835EUT#TG16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1835EUT#TG16?
MAX1835EUT#TG16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1835EUT#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 MAX1835EUT#TG16?
For technical support, including MAX1835EUT#TG16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1835EUT#TG16 requirements.
6.How does Aetrix verify that MAX1835EUT#TG16 is sourced from the original manufacturer or authorized distributors?
All MAX1835EUT#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 MAX1835EUT#TG16 meets industry standards.
7.What is the process for return or replacement of MAX1835EUT#TG16?
All MAX1835EUT#TG16 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1835EUT#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 MAX1835EUT#TG16 part is unused and in its original packaging.
Return procedure for MAX1835EUT#TG16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1835EUT#TG16 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…
