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Analog Devices Inc./Maxim Integrated MAX1796EUA+
- Part No.:
- MAX1796EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX1796EUA+.pdf
- Description:
- IC REG BOOST ADJ 400MA 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:124
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Product details
Overview
MAX1796EUA+ from Maxim Integrated is a high-efficiency, step-up DC-DC converter optimized for portable handheld devices. It delivers up to 300mA output current at 3.3V or 200mA at 5.0V from input as low as 0.7V, features True Shutdown™ for full output-input disconnect in shutdown mode, and integrates synchronous rectification to eliminate external Schottky diodes-used in wireless handsets and PDAs.
For engineers reviewing the MAX1796EUA+ datasheet, MAX1796EUA+ pinout, MAX1796EUA+ application, or MAX1796EUA+ equivalent, key selection criteria include its 0.5A current limit, 25μA quiescent supply current, 8-pin μMAX package, and integrated LBI/LBO battery monitor active during shutdown.
Technical Context
The MAX1796EUA+ employs a minimum-off-time, current-limited control architecture combining PWM efficiency with pulse-skipping ultra-low quiescent current. Its internal N-channel and P-channel MOSFETs feature RDS(ON) of 0.17Ω and 0.27Ω respectively, enabling >95% peak efficiency across load ranges.
It integrates proprietary LX-damping circuitry to suppress inductor ringing and reduce EMI, while the LBI/LBO comparator remains fully operational in shutdown-supporting autonomous low-battery detection without system-level intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Preset 3.3V (FB→OUT) or 5.0V (FB→GND); adjustable 2.0–5.5V via resistor divider |
| Max Output Current | 300mA @ 3.3V / 200mA @ 5.0V (VBATT = +2V); limited by 0.5A internal NFET switch |
| Input Voltage Range | +0.7V to +5.5V; guaranteed startup from +0.85V |
| Quiescent Supply Current | 25μA during operation; enables long battery life in always-on monitoring systems |
| Shutdown Current | 2μA max; eliminates standby power loss and enables true zero-load battery drain |
| Package | 8-pin μMAX (3.0mm × 3.0mm × 1.09mm); half-size vs. SO-8, suitable for space-constrained PCBs |
| Efficiency | Up to 95% at mid-load; sustained high efficiency down to 100μA due to synchronous rectifier |
Pinout & Package
MAX1796EUA+ is housed in an 8-pin μMAX package (3.0mm × 3.0mm × 1.09mm), thermally enhanced with exposed pad (not electrically connected), compatible with standard reflow profiles and manual soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 LBI | Low-battery comparator input | Monitors battery voltage; threshold = 0.85V (±25mV hysteresis); remains active in shutdown |
| 2 FB | Dual-Mode feedback input | Selects preset 3.3V (connect to OUT) or 5.0V (connect to GND); or sets custom VOUT via resistive divider |
| 3 LBO | Open-drain low-battery output | Sinks current when LBI > 0.85V; high-impedance otherwise; operates during shutdown |
| 4 SHDN | Active-low shutdown control | Drives device into <2μA shutdown; OUT goes high-Z; LBI/LBO remain functional |
| 5 GND | Analog/digital ground reference | Common return for all internal circuits; must be tied directly to low-impedance ground plane |
| 6 LX | Switch node connection | Connects to inductor; internal NFET drain/PFET source; requires short, low-inductance trace |
| 7 OUT | Regulated power output | Provides boosted output and bootstrap power to IC; supplies internal bias rails |
| 8 BATT | Battery input & damping switch | Accepts 0.7–5.5V input; hosts internal damping switch to suppress LX ringing and reduce EMI |
Key Features
| Feature | Design Value |
|---|---|
| True Shutdown™ | Fully disconnects OUT from BATT in shutdown-no external blocking FET or diode required |
| Synchronous rectification | Eliminates external Schottky diode; reduces conduction loss and board area; improves light-load efficiency |
| LX-damping circuitry | Internally clamps inductor flyback energy; reduces EMI by suppressing ringing without affecting VOUT ripple |
| LBI/LBO comparator | Remains powered and functional during shutdown-enables autonomous battery cutoff without MCU wake-up |
| Low-noise operation | Control scheme minimizes output ripple amplitude variation with input voltage; ripple bounded by ILIM × COUT_ESR |
Applications
| Wireless Handsets | Portable Digital Audio Players |
|---|---|
Use Scenario: Powering RF front-end and audio codecs from single-cell Li-ion or alkaline batteries under dynamic load. IC Role / Device Role / Timing Role: Step-up regulator providing stable 3.3V/5.0V rail with fast transient response and minimal quiescent draw. Use Value: Enables >95% efficiency at 100–300mA loads and extends talk time by minimizing no-load battery current to 25μA. |
Use Scenario: Supplying DSP, DAC, and display drivers in flash-based MP3 players with intermittent high-current bursts. IC Role / Device Role / Timing Role: Primary boost converter delivering regulated output while supporting LBI-triggered graceful shutdown at end-of-life. Use Value: Integrated LBI/LBO allows firmware-independent battery cutoff; 0.85V threshold supports deep discharge of alkaline cells. |
| PDAs / Palmtops | Portable Terminals |
Use Scenario: Generating clean 3.3V logic supply from aging primary batteries in handheld computing devices. IC Role / Device Role / Timing Role: High-efficiency DC-DC converter with shutdown-controlled power sequencing and battery health monitoring. Use Value: 2μA shutdown current preserves battery shelf life; μMAX package fits tight layout constraints of clamshell form factors. |
Use Scenario: Powering barcode scanners, RFID readers, and LCD interfaces in industrial handheld terminals operating across wide temperature ranges. IC Role / Device Role / Timing Role: Robust boost regulator rated for –40°C to +85°C, with EMI-suppressed switching for noise-sensitive sensor interfaces. Use Value: LX-damping circuitry meets EN55022 Class B emissions limits without added ferrites or shielding. |
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 |
|---|---|---|---|
| TPS61022DRVR | Higher 2A current limit; fixed 5.0V output only; no LBI/LBO comparator | Lacks integrated battery monitoring; requires external circuitry for low-battery detection | Choose for higher output current needs where battery monitoring is handled externally |
| RT8535GJ6F | 0.6A current limit; 2.5–5.5V input; no true shutdown (output not disconnected) | No output isolation in shutdown-leakage path remains; unsuitable for zero-standby systems | Choose for cost-sensitive designs where <2μA shutdown is not required |
Compared with TPS61022DRVR and RT8535GJ6F, MAX1796EUA+ uniquely combines 0.5A capability with true output disconnect, integrated LBI/LBO, and sub-1V startup-making it optimal for ultra-low-power, battery-critical portable systems requiring autonomous shutdown.
Availability
MAX1796EUA+ is available at Aetrix Electronics and suitable for wireless handsets, portable audio players, and industrial handheld terminals requiring stable component supply, long-term lifecycle support, and guaranteed -40°C to +85°C operation.
Supply support for MAX1796EUA+ 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 portable, industrial, and communications applications.
The MAX1795/MAX1796/MAX1797 family was designed specifically for ultra-low-power, single-cell portable devices needing high-efficiency boost conversion with integrated battery monitoring and true shutdown capability.
FAQ
What is the maximum output current capability of the MAX1796EUA+?
The MAX1796EUA+ delivers up to 300mA at 3.3V output or 200mA at 5.0V output when supplied from a +2V input. This is determined by its 0.5A internal NFET current limit and thermal design margin in the 8-pin μMAX package. Performance scales with input voltage-higher VBATT increases achievable IOUT.
Does the MAX1796EUA+ support adjustable output voltage?
Yes, the MAX1796EUA+ supports adjustable output from 2.0V to 5.5V using a resistive divider from OUT to FB to GND. The feedback set-point voltage is 1.24V (±40mV), and R2 should be ≤250kΩ. The equation R1 = R2 × (VOUT/1.24 − 1) determines the upper resistor value for precise regulation.
How does the True Shutdown™ feature work in the MAX1796EUA+?
In True Shutdown™ mode (SHDN = high), the MAX1796EUA+ fully disconnects the output from the input using internal switches, placing OUT in high-impedance state. This eliminates DC leakage paths and reduces total current draw to <2μA-critical for preserving battery charge during extended idle periods.
Can the LBI/LBO comparator operate while the MAX1796EUA+ is in shutdown?
Yes-the LBI/LBO comparator remains fully powered and functional during shutdown. LBI monitors battery voltage with a 0.85V threshold (±25mV hysteresis), and LBO provides open-drain output that sinks current when VBATT is above threshold. This enables autonomous low-battery cutoff without waking the host system.
What package type and dimensions does the MAX1796EUA+ use?
The MAX1796EUA+ uses the 8-pin μMAX package measuring 3.0mm × 3.0mm × 1.09mm-half the footprint of an SO-8. It features an exposed thermal pad (non-electrical) and is RoHS-compliant. Standard reflow profiles apply, and PCB layout must tie GND directly to a solid ground plane for thermal and noise performance.
MAX1796EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable (Programmable)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2V (3.3V, 5V)
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 400mA (Switch)
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX1796EUA+ FAQ
1.How can I place an order for MAX1796EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1796EUA+ 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 MAX1796EUA+ reliable?
The price and inventory of MAX1796EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1796EUA+ is usually 5 days.
3.What payment methods are accepted for MAX1796EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1796EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1796EUA+?
MAX1796EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1796EUA+ 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 MAX1796EUA+?
For technical support, including MAX1796EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1796EUA+ requirements.
6.How does Aetrix verify that MAX1796EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX1796EUA+ 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 MAX1796EUA+ meets industry standards.
7.What is the process for return or replacement of MAX1796EUA+?
All MAX1796EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1796EUA+, 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 MAX1796EUA+ part is unused and in its original packaging.
Return procedure for MAX1796EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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