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Analog Devices Inc./Maxim Integrated MAX1595ETC50
- Part No.:
- MAX1595ETC50
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WQFN Exposed Pad
- Datasheet:
-
MAX1595ETC50.pdf
- Description:
- IC REG CHRG PUMP 5V 125MA 12TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,865
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Product details
Overview
MAX1595ETC50 from Maxim Integrated is a regulated 5.0V step-up/step-down charge-pump DC-DC converter designed for compact, high-efficiency auxiliary power in battery-powered systems. It operates from 1.8V to 5.5V input, delivers up to 125mA output current, maintains ±3% output regulation, and uses only three ceramic capacitors-no inductor required. It serves as a local 3.3V/5.0V supply in PCMCIA cards, white LED backlighting, and GSM SIMM cards.
For engineers reviewing the MAX1595ETC50 datasheet, MAX1595ETC50 pinout, MAX1595ETC50 application, or MAX1595ETC50 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives with functional distinctions, and supply-chain support for industrial and embedded OEM programs.
Technical Context
The MAX1595ETC50 implements a dual-mode charge-pump architecture that dynamically switches between boost and buck operation based on input-output voltage relationship-enabling regulation even when VIN exceeds VOUT by >0.7V. Its 1MHz fixed-frequency oscillator ensures predictable EMI behavior and supports 1µF ceramic output capacitance.
Internal circuitry includes a 1.23V bandgap reference, error amplifier with AOUT feedback sensing, high-current MOSFET switches, and shutdown logic that disconnects OUT from IN while drawing only 0.1µA. Undervoltage lockout activates below 1.6V (±0.12V hysteresis), preventing erratic startup during brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V (±3% over -40°C to +85°C, 0–125mA load) |
| Input Voltage Range | 1.8V to 5.5V - enables direct use across single Li-ion, dual NiMH, or 3.3V/5V system rails |
| Switching Frequency | 1.0MHz (±15%) - allows small 0.22µF transfer capacitor and reduces EMI filtering burden |
| Quiescent Current | 240µA typical at VIN = 3.0V - minimizes standby drain in always-on portable subsystems |
| Shutdown Current | 5µA max (0.1µA typical) - preserves battery life during deep sleep modes |
| Output Current Capability | 125mA continuous - sufficient for driving 5–8 white LEDs or powering flash memory I/O buffers |
| Thermal Resistance θJA | 41°C/W (TQFN-EP package) - supports 1951mW max dissipation at +70°C ambient |
Pinout & Package
MAX1595ETC50 is housed in a 12-pin TQFN-EP (3mm × 3mm, 0.5mm pitch) with exposed thermal pad internally connected to GND. The EP pad must be soldered to a large PCB ground plane for optimal thermal performance and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AOUT (Pin 1) | Analog power/sense input to error amplifier | Connects directly to OUT at output capacitor for accurate remote-sense regulation; critical for low-ripple stability |
| SHDN (Pin 2) | Active-high enable control | Drives high (>1.6V) to activate; pulls OUT to high-Z state when low; 0.1µA shutdown draw |
| IN (Pins 3,4) | Main power input | Dual-pin configuration lowers impedance path; requires 1µF ceramic bypass close to pins |
| GND (Pin 5) | Analog ground reference | Separate from PGND to isolate noise-sensitive feedback paths from switching currents |
| PGND (Pins 6,7) | Power ground return | Low-impedance return for CXN/CXP switching currents; must tie to GND via short, wide trace |
| CXN (Pins 8,9) | Negative terminal of charge-transfer capacitor | Swings between ~0V and VIN during cycle; connects to 0.22µF ceramic capacitor (X7R, 0603) |
| CXP (Pin 10) | Positive terminal of charge-transfer capacitor | Swings between VIN and VOUT+VIN; connects to same 0.22µF capacitor as CXN |
| OUT (Pins 11,12) | Regulated 5.0V output | Dual-pin layout reduces IR drop; bypass with 1µF ceramic capacitor at point-of-load |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless topology | Eliminates magnetic component size, cost, and EMI concerns-ideal for ultra-thin handheld PCBs |
| Buck-boost regulation | Maintains stable 5.0V output whether VIN is 1.8V (boost) or 4.2V (buck), without mode-switching glitches |
| Load disconnect in shutdown | Prevents backfeed into input rail and protects downstream circuitry during power-off sequencing |
| Ultra-low quiescent current | 240µA typical no-load draw extends runtime in intermittently active sensor nodes and wearables |
| Ceramic capacitor compatibility | Enables full 125mA output with 1µF COUT and 0.22µF CX-no electrolytic or tantalum required |
Applications
| White LED Backlighting | Flash Memory Power Supply |
|---|---|
|
Use Scenario: Driving 4–6 white LEDs in portable LCD displays powered by single-cell Li-ion (2.7–4.2V). IC Role / Device Role / Timing Role: Regulated 5.0V current source with constant-voltage output enabling uniform LED brightness across battery discharge. Use Value: Replaces inductor-based boost converters to reduce board area by >40% while maintaining <15mV ripple at 100mA. |
Use Scenario: Providing clean 5.0V VCC_IO to NAND/NOR flash in embedded storage modules with variable host rail (3.3V or 5V). IC Role / Device Role / Timing Role: Local voltage translator and regulator ensuring flash I/O compliance during hot-plug events and brownouts. Use Value: Delivers 125mA with <3% line/load regulation-meets JEDEC JS-220 AC timing margins under dynamic load steps. |
| PCMCIA Card Power | GSM SIMM Card Boost |
|
Use Scenario: Generating 5.0V from 3.3V host bus for legacy PCMCIA peripherals in industrial laptops and docking stations. IC Role / Device Role / Timing Role: Step-down charge pump acting as isolated auxiliary rail to avoid loading host power management IC. Use Value: Achieves >85% efficiency at 75mA load-exceeds PCMCIA 2.1 spec for auxiliary supply efficiency and thermal rise. |
Use Scenario: Boosting 3.0V battery rail to 5.0V for GSM SIMM card interface logic in feature phones and M2M modules. IC Role / Device Role / Timing Role: Compact, low-noise 5V supply supporting SIM clock and data signaling up to 10MHz. Use Value: 1MHz switching frequency avoids interference with GSM RF bands; 0.1µA shutdown current extends standby time to >1 year. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge-pump regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1595EUA50+ | Same 5.0V output, but in 8-pin µMAX package (θJA = 206°C/W); lower thermal capacity limits max continuous load to 75mA | Suitable for space-constrained designs where PCB area is prioritized over power density | Select MAX1595EUA50+ only if board layout cannot accommodate TQFN thermal pad and peak load ≤75mA |
| TPS60403DBVR | Fixed 5.0V output, 60mA max, 1.2MHz switching, no buck capability; requires larger 2.2µF COUT for same ripple | Targeted at low-power logic supplies-not suitable for LED or flash memory loads requiring >60mA | Choose TPS60403DBVR only for sub-60mA applications where TI supply chain preference or existing BOM reuse applies |
Compared with MAX1595EUA50+, the MAX1595ETC50 supports 67% higher output current and superior thermal performance; compared with TPS60403DBVR, it adds true buck-boost flexibility and 2× load capacity-making it the only option for 5V generation from 1.8–5.5V inputs at ≥100mA.
Availability
MAX1595ETC50 is available at Aetrix Electronics and suitable for white LED backlighting, flash memory power supplies, and GSM SIMM card boost applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MAX1595ETC50 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, communications, and consumer applications.
The MAX1595 product line delivers compact, inductorless DC-DC conversion for portable and space-constrained systems-designed specifically to replace bulky inductive solutions in battery-powered equipment.
FAQ
What is the maximum continuous output current for MAX1595ETC50?
The MAX1595ETC50 delivers up to 125mA continuous output current at 5.0V while maintaining regulation and thermal safety within its TQFN-EP package. This rating assumes proper PCB layout with the exposed pad thermally connected to a ≥1cm² copper pour. At ambient temperatures above +70°C, derating applies per the 24.4mW/°C thermal coefficient specified in the datasheet.
Does MAX1595ETC50 require an inductor?
No, the MAX1595ETC50 is a charge-pump regulator and does not require an inductor. It uses only three external ceramic capacitors (1µF input, 0.22µF transfer, 1µF output) to achieve step-up and step-down regulation. This eliminates magnetic components, reduces EMI, and simplifies layout-making the MAX1595ETC50 ideal for ultra-thin portable designs.
Can MAX1595ETC50 operate with input voltages higher than its 5.0V output?
Yes, the MAX1595ETC50 supports true buck-boost operation: it regulates 5.0V output even when input voltage exceeds 5.0V (up to 5.5V). In buck mode, internal switches route charge from IN to OUT with diode-drop loss, enabling stable output from inputs like 5.0V system rails or partially charged Li-ion batteries. This functionality is inherent to the MAX1595ETC50's architecture and requires no external mode-select circuitry.
What is the shutdown current of MAX1595ETC50?
The MAX1595ETC50 draws just 0.1µA typical (5µA maximum) supply current in shutdown mode when SHDN is pulled low. During shutdown, the device disconnects OUT from IN, isolating the output rail and preventing backfeed. This ultra-low leakage makes the MAX1595ETC50 suitable for battery-powered devices requiring multi-year shelf life or extended sleep cycles.
Is MAX1595ETC50 RoHS-compliant and lead-free?
Yes, the MAX1595ETC50 is RoHS-compliant and lead-free, indicated by the "+" suffix in its orderable part number. The TQFN-EP package meets JEDEC J-STD-020 moisture sensitivity level 3 and is qualified for reflow soldering at +260°C peak temperature. Full compliance documentation-including substance declarations and test reports-is available through Maxim's (Analog Devices) quality portal.
MAX1595ETC50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WQFN Exposed Pad
- Packaging:
- Bulk
- 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TQFN (4x4)
MAX1595ETC50 FAQ
1.How can I place an order for MAX1595ETC50 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1595ETC50 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 MAX1595ETC50 reliable?
The price and inventory of MAX1595ETC50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1595ETC50 is usually 5 days.
3.What payment methods are accepted for MAX1595ETC50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1595ETC50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1595ETC50?
MAX1595ETC50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1595ETC50 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 MAX1595ETC50?
For technical support, including MAX1595ETC50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1595ETC50 requirements.
6.How does Aetrix verify that MAX1595ETC50 is sourced from the original manufacturer or authorized distributors?
All MAX1595ETC50 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 MAX1595ETC50 meets industry standards.
7.What is the process for return or replacement of MAX1595ETC50?
All MAX1595ETC50 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1595ETC50, 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 MAX1595ETC50 part is unused and in its original packaging.
Return procedure for MAX1595ETC50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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