My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1595EUA50+
- Part No.:
- MAX1595EUA50+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX1595EUA50+.pdf
- Description:
- IC REG CHARG PUMP 5V 125MA 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:552
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1595EUA50+ from Maxim Integrated is a regulated 5.0V step-up/step-down charge-pump DC-DC converter for battery-powered systems, operating from 1.8V to 5.5V input and delivering up to 125mA output current with ±3% regulation accuracy, 1MHz fixed-frequency switching, and 220µA quiescent current. It serves as a compact auxiliary supply in white LED backlighting, flash memory power, and PCMCIA card applications.
For engineers reviewing the MAX1595EUA50+ datasheet, MAX1595EUA50+ pinout, MAX1595EUA50+ application, or MAX1595EUA50+ equivalent, key selection criteria include its dual-mode (boost/buck) charge-pump architecture, µMAX-8 package footprint, no-inductor design requiring only three ceramic capacitors, and load disconnect during shutdown.
Technical Context
The MAX1595EUA50+ implements a constant-frequency, dual-mode charge-pump regulator using internal MOSFET switches and a 1.23V bandgap reference with error amplifier feedback. Its control scheme enables seamless transition between step-up and step-down operation depending on input-to-output voltage relationship - stepping down when VIN exceeds VOUT by >0.7V, stepping up otherwise.
It integrates undervoltage lockout (1.6V threshold with 40mV hysteresis), soft-start (≤2ms), and shutdown logic that disconnects OUT from IN while drawing only 5µA supply current. The AOUT pin provides analog power/sense connection to the output filter capacitor for precise regulation stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±3% over -40°C to +85°C, 0–125mA load, enabling stable rail for logic or analog circuitry without external feedback. |
| Input Voltage Range | 1.8V to 5.5V - supports single-cell Li-ion, NiMH, alkaline, or USB-supplied systems without pre-regulation. |
| Switching Frequency | 1.0MHz typical - allows use of small 0.22µF ceramic transfer capacitor and 1µF output capacitor, minimizing board area. |
| Quiescent Current | 220µA at no load - extends battery life in always-on or low-duty-cycle portable devices. |
| Shutdown Current | 5µA max - ensures near-zero power drain when disabled, critical for backup-battery or sleep-mode applications. |
| Output Current Capability | 125mA continuous - sufficient for driving multiple white LEDs or powering flash memory I/O rails. |
| Thermal Resistance θJA | 206.3°C/W (µMAX-8) - defines maximum power dissipation limit (~388mW at TA = +70°C) for thermal design margin. |
Pinout & Package
MAX1595EUA50+ is housed in an 8-pin µMAX package (pin pitch 0.65mm, body size 3mm × 3mm × 0.8mm), RoHS-compliant with lead-free finish. The exposed pad is absent in µMAX; thermal performance relies on PCB copper area under pins 4 (GND) and 5 (PGND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AOUT (Pin 1) | Analog power/sense node for error amplifier | Must connect directly to COUT's ground-side terminal to minimize sensing error and ensure tight output regulation. |
| SHDN (Pin 2) | Digital enable/disable control input | Active-high logic: ≥1.6V enables regulation; ≤0.6V disables device and disconnects OUT from IN. |
| IN (Pin 3) | Main power input | Accepts 1.8–5.5V; requires local 1µF ceramic bypass to GND to suppress switching noise and stabilize input impedance. |
| GND (Pin 4) | Analog ground reference | Provides reference for error amplifier and oscillator; must be star-connected to PGND at single point near IC. |
| PGND (Pin 5) | Power ground return path | Carries high-frequency switch currents; connects to CXN/CXP/OUT return paths and must route separately from GND until joined at star point. |
| CXN (Pin 6) | Negative terminal of charge-transfer capacitor | Connects to negative side of 0.22µF ceramic CX; forms half of flying capacitor network used in both boost and buck phases. |
| CXP (Pin 7) | Positive terminal of charge-transfer capacitor | Connects to positive side of CX; alternately couples to IN (charge phase) and OUT (transfer phase) via internal MOSFETs. |
| OUT (Pin 8) | Regulated 5.0V output | Delivers up to 125mA; requires 1µF ceramic output capacitor placed adjacent to pin for low-ESR ripple suppression. |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor architecture | Eliminates magnetic components and EMI concerns - ideal for space-constrained PCBs where inductor height or EMI filtering is prohibitive. |
| Dual-mode regulation (boost/buck) | Maintains 5.0V output whether input is 1.8V (boost) or 4.2V (buck), removing need for separate LDO or buck converter in multi-battery systems. |
| Load disconnect in shutdown | Prevents backfeed from OUT to IN during system sleep, protecting upstream sources and enabling true zero-power standby states. |
| Ultra-low shutdown current | 5µA max ensures <1µC total leakage per day - essential for years-long operation on coin-cell or backup batteries. |
| Integrated UVLO with hysteresis | 1.6V turn-on threshold with 40mV hysteresis prevents oscillation near battery depletion, ensuring clean startup and graceful shutdown. |
Applications
| White LED Backlighting | Flash Memory Power Supply |
|---|---|
|
Use Scenario: Driving 3–5 white LEDs in handheld LCD displays powered by single-cell Li-ion (3.0–4.2V) or alkaline (1.8–3.0V) batteries. IC Role / Device Role / Timing Role: Regulated 5.0V charge-pump supply providing constant-current LED bias independent of battery voltage sag. Use Value: Enables uniform brightness across full battery discharge curve without requiring external current regulators or PWM dimming circuitry. |
Use Scenario: Providing 5.0V VCC to NAND/NOR flash memory in embedded storage modules or PCMCIA cards with variable input (2.5–5.0V). IC Role / Device Role / Timing Role: Auxiliary power rail generator supporting flash write/erase cycles requiring stable 5.0V regardless of host bus voltage fluctuations. Use Value: Eliminates need for discrete LDO or buck converter, reducing BOM count and PCB area while maintaining JEDEC-compliant VCC tolerance. |
| Backup-Battery Boost Converter | 3V-to-5V SIM Card Power |
|
Use Scenario: Boosting 3.0V backup battery to 5.0V for real-time clock (RTC) or SRAM retention during main power failure. IC Role / Device Role / Timing Role: Low-quiescent, always-ready charge-pump converter activated only during brownout events. Use Value: Draws only 220µA idle current and 5µA in shutdown - extends 3V coin-cell life to >5 years in RTC backup applications. |
Use Scenario: Powering 5.0V GSM SIM cards from 3.0V host platform rails in mobile handsets or IoT modems. IC Role / Device Role / Timing Role: Step-up converter meeting ETSI TS 102 221 SIM interface voltage requirements with fast transient response. Use Value: Delivers 125mA peak current with <100mV output droop during SIM card insertion/reset, avoiding communication errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge-pump regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1595EUA33+ | Fixed 3.3V output instead of 5.0V; identical pinout, package, and electrical specs except VOUT and corresponding load capability (75mA vs. 125mA). | Used where 3.3V logic rails or low-power microcontrollers require regulation - not suitable for 5V-tolerant peripherals or flash memory. | Select MAX1595EUA33+ only when system-level voltage requirements mandate 3.3V; MAX1595EUA50+ cannot substitute without redesigning downstream circuitry. |
| TPS60403DBVR | TI 5V charge pump with 60mA output, 1.3MHz switching, but lacks buck mode - operates boost-only from 1.6–5.5V input. | Suitable for low-current 5V generation where input never exceeds 5V; cannot regulate down from 4.5V+ inputs like MAX1595EUA50+ can. | Choose TPS60403DBVR for cost-sensitive, low-load applications without buck requirement; MAX1595EUA50+ preferred for dual-mode flexibility and higher current. |
Compared with MAX1595EUA33+ and TPS60403DBVR, the MAX1595EUA50+ uniquely combines 5.0V regulation, 125mA output, and true step-up/step-down operation in an 8-pin µMAX package - making it optimal for battery-fed systems with varying input voltage ranges and moderate load demands.
Availability
MAX1595EUA50+ is available at Aetrix Electronics and suitable for white LED backlighting, flash memory power supplies, and backup-battery boost converters requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MAX1595EUA50+ 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 industrial, communications, and consumer applications.
The MAX1595 product line delivers compact, inductorless DC-DC conversion for portable electronics - designed specifically to replace bulky inductive solutions in space-constrained, battery-powered systems demanding regulated 3.3V or 5.0V rails.
FAQ
What is the output voltage tolerance of the MAX1595EUA50+ across temperature and load?
The MAX1595EUA50+ delivers a fixed 5.0V output with ±3% regulation accuracy over the full -40°C to +85°C operating temperature range and for load currents from 0 to 125mA. This specification is guaranteed by design and tested across process corners, ensuring consistent performance in battery-powered equipment where voltage stability directly impacts peripheral functionality.
Can the MAX1595EUA50+ operate with input voltages higher than its 5.0V output?
Yes, the MAX1595EUA50+ supports true step-down operation when the input voltage exceeds the 5.0V output by approximately 0.7V or more. In this buck mode, it regulates by transferring charge from IN to OUT via the CX capacitor, maintaining stable 5.0V output even with 5.5V input - a key differentiator from boost-only charge pumps like the TPS60403DBVR.
What external components are required for basic operation of the MAX1595EUA50+?
The MAX1595EUA50+ requires exactly three external ceramic capacitors: a 1µF input capacitor (CIN) on IN-to-GND, a 0.22µF charge-transfer capacitor (CX) between CXP and CXN, and a 1µF output capacitor (COUT) on OUT-to-GND. No inductor, diodes, or resistors are needed - enabling ultra-compact layouts with minimal BOM count.
Does the MAX1595EUA50+ provide output disconnection during shutdown?
Yes, the MAX1595EUA50+ fully disconnects the OUT pin from the IN pin when SHDN is driven low. This load-disconnect feature prevents reverse current flow and eliminates parasitic discharge paths, making the MAX1595EUA50+ suitable for systems requiring strict power domain isolation during sleep or standby modes.
How does the AOUT pin function in the MAX1595EUA50+?
The AOUT pin on the MAX1595EUA50+ serves as the analog power and sense input for the internal error amplifier. It must be connected directly to the ground-side terminal of the output capacitor (COUT) to provide accurate feedback of the regulated output voltage - ensuring minimal sensing error and tight regulation under dynamic load conditions.
MAX1595EUA50+ 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/Step-Down
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 125mA
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX1595EUA50+ FAQ
1.How can I place an order for MAX1595EUA50+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1595EUA50+ 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 MAX1595EUA50+ reliable?
The price and inventory of MAX1595EUA50+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1595EUA50+ is usually 5 days.
3.What payment methods are accepted for MAX1595EUA50+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1595EUA50+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1595EUA50+?
MAX1595EUA50+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1595EUA50+ 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 MAX1595EUA50+?
For technical support, including MAX1595EUA50+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1595EUA50+ requirements.
6.How does Aetrix verify that MAX1595EUA50+ is sourced from the original manufacturer or authorized distributors?
All MAX1595EUA50+ 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 MAX1595EUA50+ meets industry standards.
7.What is the process for return or replacement of MAX1595EUA50+?
All MAX1595EUA50+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1595EUA50+, 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 MAX1595EUA50+ part is unused and in its original packaging.
Return procedure for MAX1595EUA50+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1595EUA50+ 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…
