My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1724ELT50+T
- Part No.:
- MAX1724ELT50+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN
- Datasheet:
-
MAX1724ELT50+T.pdf
- Description:
- IC REG BOOST 5V 400MA 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,814
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX1724ELT50+T from Maxim Integrated is a fixed-output, 5.0V step-up DC-DC converter IC optimized for single-cell battery-powered systems. It features 1.5μA quiescent current, 0.91V guaranteed startup voltage, ±1% output voltage accuracy over temperature, and integrated synchronous rectification eliminating external diodes. It delivers up to 150mA output current from 0.8V–5.5V input, making it ideal for low-power portable medical devices and remote wireless transmitters.
For engineers reviewing the MAX1724ELT50+T datasheet, MAX1724ELT50+T pinout, MAX1724ELT50+T application, or MAX1724ELT50+T equivalent, key selection criteria include ultra-low IQ operation, fixed 5.0V output with tight regulation, TSOT/µDFN package compatibility, EMI-suppressed switching, and shutdown current below 0.5μA at +25°C.
Technical Context
The MAX1724ELT50+T employs a forced discontinuous, current-limited pulse-frequency-modulation (PFM) control scheme with no oscillator-switching frequency varies dynamically with load. It integrates an N-channel 0.5Ω power switch and P-channel synchronous rectifier, enabling high efficiency without external diodes.
A dedicated damping switch on the BATT pin suppresses inductor ringing and reduces EMI, while the low-voltage startup circuit draws power directly from BATT to guarantee operation down to 0.91V. Shutdown is active-low, with SHDN threshold of 75mV (min) and 800mV (max), supporting logic-level control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±1% over -40°C to +85°C - ensures stable rail for 5V microcontrollers or sensors without external feedback resistors. |
| Input Voltage Range | 0.8V to 5.5V - supports direct operation from one alkaline/NiMH cell (0.9–1.6V) or Li+ cell (2.7–4.2V). |
| Quiescent Current | 1.5μA into OUT - enables >1-year battery life in always-on sensor nodes powered by CR2032 or AAA cells. |
| Startup Voltage | 0.91V (min) at +25°C - guarantees reliable boot from nearly-dead single-cell batteries before cutoff. |
| Shutdown Current | 0.001μA into BATT at +25°C - preserves battery charge during extended sleep modes in remote controls or wearables. |
| Output Current | Up to 150mA at VOUT = 5.0V - sufficient to drive BLE radios, OLED displays, or small solenoids in compact handheld devices. |
| Package | 6-pin µDFN (2mm × 2mm × 0.75mm) - enables ultra-dense PCB layouts where TSOT height (0.9mm) is unacceptable. |
Pinout & Package
MAX1724ELT50+T uses a 6-pin µDFN package (2mm × 2mm × 0.75mm, land pattern 90-0004), RoHS-compliant and lead-free. Pin 1 is FB; pin 2 is SHDN; pin 3 is GND; pin 4 is OUT; pin 5 is LX; pin 6 is BATT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB | Feedback reference input | Internally tied to 5.0V output - not connected externally; unused in fixed-output variants like MAX1724ELT50+T. |
| SHDN | Active-low shutdown control | Pull low (<75mV) to disable switching; pulls OUT to ~VIN – 0.6V via P-channel body diode during shutdown. |
| GND | Power and signal ground reference | Must be connected to low-impedance ground plane within 5mm of CIN/COUT grounds to minimize noise and ground bounce. |
| OUT | Regulated power output and bootstrap supply | Delivers 5.0V at up to 150mA; also powers internal gate drivers - requires ≥10μF ceramic capacitor placed adjacent to pin. |
| LX | Switch node (N-MOSFET drain / P-MOSFET drain) | Connects to inductor; exhibits ringing suppressed by internal damping switch - keep trace short and avoid routing near sensitive analog signals. |
| BATT | Battery input and damping switch connection | Accepts 0.8–5.5V input; powers startup circuit - must connect directly to battery or low-ESR input capacitor (≥10μF). |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode - reduces BOM count, board area, and conduction losses by replacing 0.3V diode drop with <0.2V MOSFET RDS(ON) drop. |
| EMI suppression | Integrated damping switch on BATT pin - reduces peak-to-peak LX ringing amplitude by >50%, lowering radiated emissions without adding components. |
| Ultra-low IQ | 1.5μA quiescent current into OUT - extends shelf life and operational runtime in energy-harvesting or coin-cell applications where standby current dominates lifetime. |
| Guaranteed startup | 0.91V minimum input at +25°C - enables use with depleted alkaline cells down to 0.9V, avoiding premature system shutdown in pagers or remotes. |
| Fixed 5.0V output | ±1% accuracy over full temperature range - eliminates need for external resistor divider calibration, simplifying layout and reducing test time. |
Applications
| Remote Wireless Transmitters | Personal Medical Devices |
|---|---|
Use Scenario: Battery-powered sub-GHz RF modules transmitting vital sign data from wearable patches or glucose monitors. IC Role / Device Role / Timing Role: Primary 5V power rail generator stepping up from single 1.5V alkaline or 3.6V Li-SOCl₂ cell. Use Value: 1.5μA IQ and 0.91V startup maximize usable battery capacity; fixed 5.0V output ensures consistent RF amplifier bias across battery discharge curve. |
Use Scenario: Portable pulse oximeters or digital thermometers using CR2032 coin cells for multi-month operation. IC Role / Device Role / Timing Role: Efficient 5V supply for optical sensor front-end and low-power MCU, replacing inefficient charge pumps. Use Value: Synchronous rectification achieves >85% efficiency at 10mA load, extending clinical-grade device runtime beyond 6 months per battery. |
| Low-Power Hand-Held Instruments | Digital Still Cameras (Compact) |
Use Scenario: Pocket-sized multimeters or environmental sensors powered by AAA batteries with auto-shutdown. IC Role / Device Role / Timing Role: Always-on 5V rail generator with active-low SHDN controlled by MCU GPIO to enter <0.001μA deep-sleep state. Use Value: Shutdown current of 0.001μA prevents measurable battery drain during 30-day storage, preserving >99% charge. |
Use Scenario: Entry-level digital cameras using single AA alkaline cell to power image sensor, flash LED driver, and SD card interface. IC Role / Device Role / Timing Role: High-efficiency 5V boost converter supplying flash charging circuit and USB PHY during data transfer. Use Value: Up to 90% efficiency at 150mA peak load enables full flash operation even at 1.0V battery voltage, preventing brownouts during photo capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61200DRCT | Adjustable output (1.8–5.5V); higher 2.5μA IQ; no internal damping switch; 5-pin TSOT only. | Requires external feedback resistors; less effective EMI control in space-constrained RF designs. | Select when adjustable output or lower cost is prioritized over ultra-low IQ and EMI suppression. |
| SP6641A-5.0 | Fixed 5.0V output; 2.0μA IQ; 1.0V min startup; 5-pin SOT-23 package (larger footprint than µDFN). | No synchronous rectification - requires external Schottky diode, increasing size and reducing efficiency by ~5%. | Select when µDFN assembly capability is unavailable and 0.5μA IQ difference is acceptable for target battery life. |
Compared with TPS61200DRCT and SP6641A-5.0, the MAX1724ELT50+T uniquely combines fixed 5.0V output, 1.5μA IQ, 0.91V startup, and integrated EMI damping in a 2mm × 2mm µDFN - delivering superior battery runtime and EMC compliance in miniaturized portable electronics.
Availability
MAX1724ELT50+T is available at Aetrix Electronics and suitable for remote wireless transmitters, personal medical devices, and low-power hand-held instruments requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX1724ELT50+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) designs precision analog, mixed-signal, and power management ICs for demanding industrial, medical, and portable applications.
The MAX1722/MAX1723/MAX1724 family was engineered specifically for ultra-low-power, single-cell battery systems where minimal quiescent current, smallest possible footprint, and guaranteed low-voltage startup are critical design requirements.
FAQ
What is the guaranteed minimum startup voltage for MAX1724ELT50+T?
The MAX1724ELT50+T guarantees startup at 0.91V (minimum) at +25°C with no load, as specified in the Electrical Characteristics table. This value degrades slightly at temperature extremes - down to 0.83V at -40°C and up to 0.95V at +85°C - but remains fully functional across the full -40°C to +85°C operating range. The BATT-pin-powered startup circuit enables this performance.
Does MAX1724ELT50+T require external feedback resistors to set its output voltage?
No, the MAX1724ELT50+T does not require external feedback resistors. It is a fixed-output variant with internal feedback network trimmed to deliver 5.0V ±1% over temperature. The FB pin is internally connected and must be left unconnected in PCB layout - unlike the adjustable MAX1722/MAX1723, which require R1/R2 dividers.
How does the internal damping switch in MAX1724ELT50+T reduce EMI?
The internal damping switch in MAX1724ELT50+T connects between BATT and LX during inductor flyback phase, providing a low-impedance path to dissipate resonant energy that would otherwise cause high-frequency ringing at the LX node. This reduces peak EMI emissions by >10dB in the 30–100MHz band without affecting output ripple or efficiency - confirmed in Figures 5 and 6 of the datasheet.
What is the maximum continuous output current of MAX1724ELT50+T at 5.0V output?
The MAX1724ELT50+T delivers up to 150mA continuous output current at 5.0V when supplied from ≥1.5V input, as verified in the Typical Operating Characteristics plot "Maximum Output Current vs. Input Voltage". At lower inputs (e.g., 1.0V), max output drops to ~60mA due to duty-cycle limits and efficiency loss - always verify against actual VIN/VOUT conditions in your design.
Can MAX1724ELT50+T be used with lithium primary batteries such as Li-SOCl₂?
Yes, MAX1724ELT50+T supports input voltages up to 5.5V, making it compatible with lithium thionyl chloride (Li-SOCl₂) primary cells (nominal 3.6V, open-circuit up to 3.9V). Its 0.8V–5.5V input range and 1.5μA quiescent current ensure optimal performance across the full discharge curve of these high-energy-density cells, commonly used in medical telemetry and utility metering.
MAX1724ELT50+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN
- 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):
- 0.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 400mA (Switch)
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-µDFN (2x2)
MAX1724ELT50+T FAQ
1.How can I place an order for MAX1724ELT50+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1724ELT50+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 MAX1724ELT50+T reliable?
The price and inventory of MAX1724ELT50+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1724ELT50+T is usually 5 days.
3.What payment methods are accepted for MAX1724ELT50+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1724ELT50+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1724ELT50+T?
MAX1724ELT50+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1724ELT50+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 MAX1724ELT50+T?
For technical support, including MAX1724ELT50+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1724ELT50+T requirements.
6.How does Aetrix verify that MAX1724ELT50+T is sourced from the original manufacturer or authorized distributors?
All MAX1724ELT50+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 MAX1724ELT50+T meets industry standards.
7.What is the process for return or replacement of MAX1724ELT50+T?
All MAX1724ELT50+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1724ELT50+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 MAX1724ELT50+T part is unused and in its original packaging.
Return procedure for MAX1724ELT50+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1724ELT50+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…
