My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1795EUA+
- Part No.:
- MAX1795EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX1795EUA+.pdf
- Description:
- IC REG BOOST ADJ 200MA 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,059
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1795EUA+ from Maxim Integrated is a high-efficiency, step-up DC-DC converter optimized for low-voltage portable devices. It delivers up to 180mA output at 3.3V or 120mA at 5.0V from input as low as 0.85V startup and 0.7V operating voltage, features True Shutdown™ for full output disconnect, and integrates synchronous rectification to eliminate external Schottky diodes - used in battery-powered digital audio players and PDAs.
For engineers reviewing the MAX1795EUA+ datasheet, MAX1795EUA+ pinout, MAX1795EUA+ application, or MAX1795EUA+ equivalent, this page provides verified technical context, confirmed pin functions, real-world efficiency curves, validated alternative options, and design-meaningful specifications - all specific to the MAX1795EUA+ variant with 0.25A current limit and 8-pin μMAX package.
Technical Context
The MAX1795EUA+ employs a minimum-off-time, current-limited control scheme combining PWM-like efficiency with pulse-skipping quiescent current benefits. Its internal N-channel MOSFET has 0.17Ω typical RDS(ON), and P-channel synchronous rectifier eliminates external diode losses - enabling >95% peak efficiency at light-to-moderate loads.
True Shutdown™ fully isolates OUT from BATT while maintaining LBI/LBO comparator operation; LX-damping circuitry reduces EMI via an integrated 100–400Ω damping switch. The device operates from 0.7V to 5.5V input and supports preset 3.3V/5.0V outputs or adjustable 2.0–5.5V via FB divider.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current Limit | 0.25A - sets maximum inductor peak current; defines max load capability at given input/output conditions |
| Startup Voltage | 0.85V - enables reliable power-up from single alkaline or NiMH cells near end-of-life |
| Quiescent Supply Current | 25μA - minimizes no-load battery drain in always-on portable systems |
| Shutdown Current | 2μA - ensures negligible standby leakage when system is powered down |
| Feedback Reference Voltage | 1.24V - determines output setpoint in adjustable mode; enables precise VOUT tuning with resistor divider |
| Efficiency (Peak) | >95% - achieved at mid-load with 2.4V input and 3.3V output; reduces thermal stress and extends battery life |
| LX Switch On-Resistance | 0.17Ω (NFET), 0.27Ω (PFET) - directly impacts conduction loss and thermal rise under load |
Pinout & Package
MAX1795EUA+ is housed in an 8-pin μMAX package (3.0mm × 3.0mm × 1.09mm), compatible with standard SO-8 footprints but occupying half the area and height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 LBI | Low-battery comparator input | Monitors input voltage; remains active in shutdown; threshold fixed at 0.85V (±25mV hysteresis) |
| 2 FB | Dual-Mode feedback input | Selects preset 3.3V (connect to OUT) or 5.0V (connect to GND); or adjusts 2.0–5.5V via resistor divider |
| 3 LBO | Open-drain low-battery output | Sinks current when LBI > 0.85V; high-impedance otherwise; functional during shutdown |
| 4 SHDN | Active-high shutdown control | Drives OUT into high-Z state and cuts supply current to <2μA when pulled high |
| 5 GND | Power and signal ground reference | Must be connected to low-impedance ground plane; critical for noise suppression and thermal performance |
| 6 LX | Inductor switching node | Connects to inductor; hosts damped ringing waveform; requires short, low-inductance PCB trace |
| 7 OUT | Regulated power output & bootstrap supply | Provides output voltage and powers internal circuitry; must be decoupled with ≥47μF capacitor |
| 8 BATT | Battery input & damping switch connection | Accepts 0.7–5.5V input; internal damping switch connects between BATT and LX to suppress ringing |
Key Features
| Feature | Design Value |
|---|---|
| True Shutdown™ | Fully disconnects OUT from BATT in shutdown - eliminates parasitic discharge path and removes need for external blocking FET |
| Synchronous Rectification | Integrated P-channel MOSFET replaces external Schottky diode - improves efficiency by ~5–10% and saves board space |
| LX-Damping Circuitry | On-chip 100–400Ω damping switch suppresses inductor ringing - reduces EMI without affecting output ripple amplitude |
| LBI/LBO Comparator in Shutdown | Enables battery monitoring during system sleep - allows autonomous low-battery detection without waking main controller |
| Ultra-Low Quiescent Current | 25μA operating / 2μA shutdown - extends runtime in intermittently active portable devices like remote controls or sensors |
Applications
| Portable Digital Audio Players | PDAs / Palmtops |
|---|---|
Use Scenario: Powering 3.3V DSP, flash memory, and LCD backlight from single 1.5V alkaline cell. IC Role / Device Role: Step-up regulator with battery monitoring and ultra-low quiescent current. Use Value: Enables >100 hours of playback time; LBI/LBO alerts firmware before brownout without waking CPU. |
Use Scenario: Generating stable 5.0V rail for USB peripherals and 3.3V for microcontroller core from 3.6V Li-ion. IC Role / Device Role: Dual-output-capable boost converter with preset voltage selection and shutdown isolation. Use Value: Eliminates external diode and reduces BOM count; True Shutdown prevents battery drain during suspend mode. |
| Wireless Handsets | Portable Terminals |
Use Scenario: Supplying 3.3V to RF transceiver and baseband IC from declining 2.4–3.6V Li-ion pack. IC Role / Device Role: High-efficiency, low-noise boost converter with EMI-damped LX node. Use Value: >95% efficiency at 100mA maintains thermal margin; LX damping meets FCC radiated emissions limits. |
Use Scenario: Providing regulated 5.0V for barcode scanner module and 3.3V for MCU from 1.2–2.4V NiMH stack. IC Role / Device Role: Wide-input, multi-voltage boost converter with robust startup from weak batteries. Use Value: Guaranteed startup at 0.85V allows full functionality until battery reaches 0.7V - maximizes usable capacity. |
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 |
|---|---|---|---|
| TPS61022DRCT | Higher 2A current limit; 2.5V–5.5V input; fixed 3.3V/5.0V options only; no LBI/LBO comparator | Targeted at higher-power loads; lacks integrated battery monitor - requires external comparator for low-battery detection | Choose TPS61022DRCT when >180mA continuous output is required and battery monitoring is handled externally. |
| SP6650ES-L/TR | 0.3A current limit; 0.9V–4.5V input; 2.5V–5.0V adjustable output; 35μA quiescent current; no shutdown isolation | Lower efficiency (~90% peak); no True Shutdown - output remains coupled to input in shutdown; no LX damping | Choose SP6650ES-L/TR only if cost is primary constraint and EMI/battery monitoring requirements are relaxed. |
Compared with TPS61022DRCT and SP6650ES-L/TR, the MAX1795EUA+ uniquely combines sub-1V startup, true output isolation in shutdown, integrated LBI/LBO, and LX damping - making it optimal for ultra-low-power, noise-sensitive, battery-critical portable designs where reliability and feature integration outweigh raw current capability.
Availability
MAX1795EUA+ is available at Aetrix Electronics and suitable for portable digital audio players, PDAs/palmtops, wireless handsets, and portable terminals requiring stable component supply across extended production lifecycles.
Supply support for MAX1795EUA+ 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding applications.
The MAX1795EUA+ belongs to Maxim's low-quiescent-current boost converter family, designed specifically for energy-constrained portable electronics that require reliable startup from depleted batteries and minimal standby drain.
FAQ
What is the minimum input voltage required for MAX1795EUA+ to start up?
The MAX1795EUA+ guarantees startup from +0.85V at +25°C with a 3kΩ load, and operates continuously down to +0.7V after startup. This enables use with single-cell alkaline, NiMH, or LiFePO₄ batteries nearing end-of-life. Startup voltage increases slightly with temperature - typical tempco is -2.2mV/°C.
How does MAX1795EUA+ achieve >95% efficiency without an external Schottky diode?
The MAX1795EUA+ integrates a synchronous rectifier using an internal P-channel MOSFET that replaces the external Schottky diode. During the off-time, the PFET turns on and bypasses its body diode, reducing forward voltage drop from ~0.3V to <0.1V - cutting conduction losses and enabling >95% peak efficiency at moderate loads with 2.4V input and 3.3V output.
Can MAX1795EUA+ be configured for an output voltage other than 3.3V or 5.0V?
Yes. The MAX1795EUA+ supports adjustable output from +2.0V to +5.5V using a resistive divider from OUT to FB to GND. With a fixed feedback reference of 1.24V, R1 = R2 × ((VOUT / 1.24) − 1). R2 should be ≤250kΩ to ensure adequate bias current; typical designs use R2 = 1MΩ and calculate R1 accordingly.
What is the function of the LBI and LBO pins on MAX1795EUA+?
LBI is the low-battery comparator input with a factory-trimmed 0.85V threshold (±25mV hysteresis); LBO is its open-drain output. When LBI voltage exceeds 0.85V, LBO sinks current; below threshold, LBO goes high-impedance. Critically, both remain fully operational during MAX1795EUA+ shutdown - enabling battery monitoring without waking the host system.
Does MAX1795EUA+ require an external damping resistor for the LX node?
No. The MAX1795EUA+ includes an integrated LX-damping switch with 100–400Ω on-resistance, which automatically activates when inductor energy depletes. This eliminates external damping components while reducing EMI - confirmed by comparative waveforms showing suppressed ringing versus conventional boost converters without damping.
MAX1795EUA+ 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:
- 200mA (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
MAX1795EUA+ FAQ
1.How can I place an order for MAX1795EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1795EUA+ 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 MAX1795EUA+ reliable?
The price and inventory of MAX1795EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1795EUA+ is usually 5 days.
3.What payment methods are accepted for MAX1795EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1795EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1795EUA+?
MAX1795EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1795EUA+ 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 MAX1795EUA+?
For technical support, including MAX1795EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1795EUA+ requirements.
6.How does Aetrix verify that MAX1795EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX1795EUA+ 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 MAX1795EUA+ meets industry standards.
7.What is the process for return or replacement of MAX1795EUA+?
All MAX1795EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1795EUA+, 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 MAX1795EUA+ part is unused and in its original packaging.
Return procedure for MAX1795EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1795EUA+ 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…
