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Analog Devices Inc./Maxim Integrated MAX1832EUT#TG16
- Part No.:
- MAX1832EUT#TG16
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX1832EUT#TG16.pdf
- Description:
- IC REG BOOST ADJ 150MA SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:2,196
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Product details
Overview
The MAX1832EUT#TG16 from Maxim Integrated is an adjustable-output, high-efficiency 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 output current, and provides battery-to-output connection in shutdown for backup power in real-time clock or SRAM applications.
For engineers reviewing the MAX1832EUT#TG16 datasheet, MAX1832EUT#TG16 pinout, MAX1832EUT#TG16 application, or MAX1832EUT#TG16 equivalent, key selection considerations include its adjustable 2.0V–5.5V output, SOT23-6 package, reverse-battery-protected BATT/LX/SHDN pins, and shutdown-mode battery passthrough functionality.
Technical Context
The MAX1832EUT#TG16 uses a current-limited, oscillator-free control scheme with 5µs maximum on-time and 525mA N-channel switch current limit. Its internal synchronous rectifier replaces external Schottky diodes, enabling >90% efficiency at 40mA load with +2V input and +3.3V output.
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. In shutdown, the internal PFET connects BATT directly to OUT through the inductor-enabling zero-drop backup supply without external diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | Adjustable 2.0V to 5.5V - set via external resistor divider on FB pin; supports flexible system rail generation. |
| Input Voltage Range | +1.5V to +5.5V - compatible with single Li+ cell, two alkaline/NiMH cells, or wide industrial supply rails. |
| Max Output Current | 150mA at VBATT = +2V, VOUT = +3.3V - sufficient for low-power microcontrollers, sensors, and RF transceivers. |
| Quiescent Current | 4μA typical - minimizes battery drain in always-on or infrequently active systems. |
| Shutdown Supply Current | <1μA - enables multi-year operation on coin cells when converter is inactive. |
| FB Reference Voltage | 1.228V ±0.02V - high-accuracy feedback threshold enabling precise output regulation across temperature. |
| Reverse Battery Leakage | <10μA into OUT or BATT at −3V - ensures robust protection without parasitic discharge during misconnection. |
Pinout & Package
MAX1832EUT#TG16 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 high ≥1.228V enables conversion; low disables IC and connects BATT to OUT via internal PFET for backup power. |
| 2 - BATT | Battery input with reverse polarity protection | Accepts +1.5V to +5.5V; internal N-MOSFET blocks current if voltage is negative, protecting downstream circuitry. |
| 3 - GND | Power and signal reference ground | Must be connected to low-impedance ground plane; critical for minimizing noise and ensuring stable regulation. |
| 4 - LX | Switch node for external inductor | Drain of N-channel switch and P-channel synchronous rectifier; requires short, low-inductance trace to inductor. |
| 5 - OUT | Regulated output voltage | Provides final boosted voltage; also serves as bootstrapped supply for internal circuitry and RST pullup reference. |
| 6 - FB | Feedback input for adjustable output | Monitors output via resistor divider; 1.228V reference enables precise VOUT = 1.228V × (1 + R1/R2) configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous rectifier | Eliminates external Schottky diode - reduces BOM count, board area, and conduction losses for >90% peak efficiency. |
| Reverse battery protection | Proprietary N-MOSFET gate control - prevents damage and leakage when input is connected backwards, no external components required. |
| BATT-to-OUT passthrough in shutdown | Internal PFET enables direct battery connection to output - supplies backup power to RTC/SRAM without diode drop or external switches. |
| Ultra-low quiescent current | 4μA typical - extends battery life in standby modes, critical for medical diagnostics and remote wireless transmitters. |
| Accurate SHDN threshold | 1.228V ±0.02V with 20mV hysteresis - supports reliable low-battery cutoff using simple resistor divider, minimizing false triggers. |
Applications
| Medical Diagnostic Equipment | Pagers |
|---|---|
|
Use Scenario: Portable glucose meters and handheld ultrasound probes requiring long battery life and reliable startup from weak batteries. IC Role / Device Role / Timing Role: Step-up regulator generating stable 3.3V logic rail from declining alkaline/NiMH cells while enabling low-battery cutoff. Use Value: 4μA quiescent current and 1.228V SHDN threshold allow accurate end-of-life detection and >2-year shelf life in unpowered state. |
Use Scenario: Two-way pagers with intermittent receive/transmit cycles and persistent memory retention during sleep. IC Role / Device Role / Timing Role: Primary 3.3V supply with shutdown-mode BATT-to-OUT passthrough powering SRAM and real-time clock. Use Value: Internal PFET bypass eliminates diode forward voltage drop, preserving backup runtime and eliminating need for separate coin-cell. |
| Hand-Held Instruments | Remote Wireless Transmitters |
|
Use Scenario: Battery-powered multimeters and thermal imagers needing clean, ripple-free 5.0V analog supply. IC Role / Device Role / Timing Role: Adjustable boost converter delivering precise 5.0V from 2×AA cells, with feedback loop stability ensured by 1.228V FB reference. Use Value: 150mA output capability supports analog front-end and display drivers; synchronous rectification maintains >85% efficiency at light loads. |
Use Scenario: LoRaWAN or NB-IoT sensor nodes deployed in field locations with infrequent transmission bursts. IC Role / Device Role / Timing Role: High-efficiency 3.3V supply enabling ultra-low average current draw over multi-year deployments. Use Value: <1μA shutdown current and reverse battery protection ensure reliability against installation errors and environmental stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1834EUT#TG16 | Same SOT23-6 package and adjustable output range, but outputs VBATT − 0.7V in shutdown (no BATT-to-OUT passthrough). | Lacks backup power capability; suitable where shutdown isolation is preferred over battery passthrough. | Select MAX1834EUT#TG16 only if backup power is unnecessary and lower shutdown leakage (<0.1μA) is prioritized. |
| TPS61022DSQR | Fixed 3.3V output, 2.0V–5.5V input, 1.2A switch current, but no reverse battery protection or shutdown passthrough. | Higher output current and integrated soft-start, but requires external reverse-polarity protection circuitry. | Choose TPS61022DSQR for higher load demands where reverse protection is handled at system level and fixed 3.3V suffices. |
Compared with MAX1834EUT#TG16 and TPS61022DSQR, the MAX1832EUT#TG16 uniquely combines adjustable output, reverse battery protection, and true zero-drop battery passthrough in shutdown-making it optimal for space-constrained, battery-backed portable instrumentation.
Availability
MAX1832EUT#TG16 is available at Aetrix Electronics and suitable for medical diagnostic equipment, hand-held instruments, and remote wireless transmitters requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
Supply support for MAX1832EUT#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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and portable applications.
The MAX1832–MAX1835 family was designed specifically for ultra-low-power, reverse-polarity-robust boost conversion in battery-powered portable devices-emphasizing efficiency, integration, and fault resilience.
FAQ
What is the output voltage range of the MAX1832EUT#TG16?
The MAX1832EUT#TG16 features an adjustable output voltage range of +2.0V to +5.5V, set using an external resistor divider connected to the FB pin. The internal 1.228V feedback reference enables precise regulation, and typical accuracy is ±1.5% over temperature. This flexibility allows the MAX1832EUT#TG16 to generate custom supply rails for diverse analog and digital loads without requiring multiple fixed-output variants.
How does the MAX1832EUT#TG16 provide reverse battery protection?
The MAX1832EUT#TG16 implements reverse battery protection using an internal N-channel MOSFET controlled by proprietary gate logic. When BATT is connected with negative polarity, the MOSFET remains off, blocking current flow into LX and OUT. Measured reverse leakage is under 10μA at −3V, preventing damage to the IC, battery, or load. Unlike solutions requiring external FETs or diodes, this protection is fully integrated and requires no additional components.
Does the MAX1832EUT#TG16 support backup power functionality during shutdown?
Yes-the MAX1832EUT#TG16 connects the BATT pin directly to the OUT pin via an internal PFET when SHDN is low, enabling true zero-forward-drop backup power. This feature allows the input battery to sustain real-time clocks, SRAM, or microcontroller retention without external diodes. The MAX1832EUT#TG16 is explicitly designed for this use case, distinguishing it from alternatives like the MAX1834EUT#TG16, which lacks this passthrough path.
What is the quiescent current specification for the MAX1832EUT#TG16?
The MAX1832EUT#TG16 draws just 4μA typical quiescent current when enabled and regulating, and less than 1μA in shutdown mode. These values are measured across the full −40°C to +85°C operating temperature range and enable multi-year battery life in low-duty-cycle applications such as remote sensors and portable diagnostics. The low IQ results from its oscillator-free, current-limited control architecture.
Can the MAX1832EUT#TG16 be used with a single lithium-ion cell?
Yes-the MAX1832EUT#TG16 supports input voltages from +1.5V to +5.5V, making it compatible with single Li+ cells (2.7V–4.2V nominal). Its 1.228V SHDN threshold and low startup voltage (1.24V min at −40°C to +85°C) ensure reliable operation even as the cell discharges below 3.0V. Combined with 90% peak efficiency and synchronous rectification, the MAX1832EUT#TG16 maximizes usable energy from Li+ sources in compact portable designs.
MAX1832EUT#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:
- 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-6
MAX1832EUT#TG16 FAQ
1.How can I place an order for MAX1832EUT#TG16 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1832EUT#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 MAX1832EUT#TG16 reliable?
The price and inventory of MAX1832EUT#TG16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1832EUT#TG16 is usually 5 days.
3.What payment methods are accepted for MAX1832EUT#TG16?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1832EUT#TG16 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1832EUT#TG16?
MAX1832EUT#TG16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1832EUT#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 MAX1832EUT#TG16?
For technical support, including MAX1832EUT#TG16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1832EUT#TG16 requirements.
6.How does Aetrix verify that MAX1832EUT#TG16 is sourced from the original manufacturer or authorized distributors?
All MAX1832EUT#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 MAX1832EUT#TG16 meets industry standards.
7.What is the process for return or replacement of MAX1832EUT#TG16?
All MAX1832EUT#TG16 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1832EUT#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 MAX1832EUT#TG16 part is unused and in its original packaging.
Return procedure for MAX1832EUT#TG16:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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