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Analog Devices Inc./Maxim Integrated MAX619CSA+T
- Part No.:
- MAX619CSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX619CSA+T.pdf
- Description:
- IC REG CHARGE PUMP 5V 50MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,302
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Product details
Overview
The MAX619CSA+T from Maxim Integrated is a regulated 5V ±4% charge-pump DC-DC converter designed for low-voltage battery-powered systems. It operates from 2V to 3.6V input (e.g., two alkaline or NiMH cells), delivers up to 50mA output current at ≥3V input, features 500kHz internal oscillator, logic-controlled shutdown (1µA max), and requires only four external capacitors - enabling ultra-compact 0.1in² designs.
For engineers reviewing the MAX619CSA+T datasheet, MAX619CSA+T pinout, MAX619CSA+T application, or MAX619CSA+T equivalent, key selection considerations include guaranteed output current over temperature, inductorless operation with low EMI, shutdown-induced load disconnection, SO-8 package compatibility, and precise 5V regulation for microprocessor, flash programming, and op-amp supply use cases.
Technical Context
The MAX619CSA+T employs a pulse-skipping controller to regulate output voltage and dynamically switches between voltage-doubler (VIN ≥3.0V), voltage-tripler (VIN ≤2.5V), and 2.5× mode (2.5V < VIN < 3.0V) to maximize efficiency across its 2V–3.6V input range. Internal circuitry selects the higher of VIN or VOUT as its supply rail.
It integrates CMOS-compatible SHDN control, disconnects OUT from IN during shutdown, and lacks short-circuit protection. Output ripple is specified at 100mV (no-load to full-load), and efficiency reaches 80% typical at VIN = 2V, IOUT = 20mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±4% - ensures stable logic-level supply for 5V microcontrollers and peripherals without external regulation. |
| Max Output Current | 50mA at VIN ≥3V - supports moderate-power loads like flash memory programmers or dual op-amp rails. |
| Input Voltage Range | 2.0V to 3.6V - directly compatible with two-cell battery stacks (alkaline/NiMH/Li-ion backup). |
| Shutdown Current | 1µA max - enables multi-year battery life in always-on portable instruments with periodic wake-up. |
| Oscillator Frequency | 500kHz fixed - allows use of small 0.22µF ceramic flying capacitors and minimizes EMI filtering burden. |
| Efficiency | 80% typical at VIN=2V, IOUT=20mA - reduces thermal stress and extends runtime in space-constrained handheld devices. |
| Output Ripple | 100mV peak-to-peak - acceptable for non-sensitive analog supplies; further reduction possible with low-ESR output capacitor. |
Pinout & Package
The MAX619CSA+T is housed in an 8-pin SO (Small Outline) package, surface-mount compatible, with 1.27mm pitch and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1+ | Positive terminal of flying capacitor C1 | Connects to 0.22µF charge-pump capacitor; critical path for energy transfer in tripler/doubler modes. |
| C1− | Negative terminal of flying capacitor C1 | Reference node for C1; tied internally to switching matrix; must be low-inductance connection. |
| SHDN | Active-high CMOS shutdown control | Pull high (≥0.7×VIN) to disable regulator and disconnect load; pull low for normal operation. |
| GND | Power and signal ground reference | Common return for input, output, and internal circuitry; requires solid plane for stability and low noise. |
| C2− | Negative terminal of flying capacitor C2 | Switching node shared with C1− in doubler mode; layout symmetry improves EMI performance. |
| C2+ | Positive terminal of flying capacitor C2 | Second flying capacitor node; used in both doubler and tripler configurations for voltage multiplication. |
| OUT | Regulated +5V output | Delivers up to 50mA; drops to 0V during shutdown; requires ≥10µF output capacitor for stability. |
| IN | Input supply (2V–3.6V) | Primary power source; also powers internal logic when VIN > VOUT; bypass with ≥10µF capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor architecture | Eliminates magnetic components and associated EMI, simplifying layout and reducing BOM cost and board area. |
| Auto-mode switching | Dynamically selects voltage-doubler, tripler, or 2.5× mode based on VIN to maintain >75% efficiency across full input range. |
| Load-disconnect shutdown | Physically isolates output from input during shutdown, preventing backfeed and enabling true system power gating. |
| Ultra-low quiescent current | 150µA max operating supply current enables >1-year battery life in low-duty-cycle remote sensors. |
| Minimal external components | Only four capacitors required (two 0.22µF flying, one 10µF input, one 10µF output) - total solution fits in <0.1in². |
Applications
| Battery-Powered Microprocessor Systems | 5V Flash Memory Programmer |
|---|---|
Use Scenario: Portable data logger powered by two AA batteries supplying 5V to an 8-bit MCU and serial EEPROM. IC Role / Device Role / Timing Role: Step-up DC-DC converter generating stable 5V rail from decaying 2.0–3.0V battery input. Use Value: Enables full 5V MCU operation down to 2.0V battery voltage, extending usable battery life by ~25% versus fixed LDO solutions. | Use Scenario: Handheld device that programs 5V NOR flash using USB-hosted firmware updates. IC Role / Device Role / Timing Role: Dedicated 5V charge-pump supply isolated from main system rail to ensure clean programming voltage. Use Value: Guarantees ±4% regulation during high-current flash write pulses, preventing bit errors caused by voltage droop. |
| Compact 5V Op-Amp Supply | Regulated 5V Supply from Lithium Backup Battery |
Use Scenario: Precision sensor front-end using dual-rail op-amps requiring low-noise, space-constrained 5V supply. IC Role / Device Role / Timing Role: Local 5V generation adjacent to analog section, minimizing trace length and coupling. Use Value: Delivers 5V at 20mA with <100mV ripple using 0.22µF ceramic flying caps - avoids inductor-induced magnetic interference. | Use Scenario: Real-time clock module backed by coin-cell lithium battery (2.7–3.3V) needing regulated 5V for SRAM retention. IC Role / Device Role / Timing Role: Low-quiescent boost converter activated only during power-fail events to sustain 5V rail. Use Value: Draws just 1µA in shutdown, preserving coin-cell capacity for >10 years while delivering fast 5V turn-on (<0.5ms) when needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge-pump DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60110IDR | Fixed 5V output, 100mA max, 1MHz switching, requires 1µF flying caps; no auto-mode switching. | Higher output current but less efficient below 2.5V input; better suited for stable 3V+ sources. | Select when >50mA load or faster transient response is required; verify layout for higher-frequency EMI. |
| LT1930AES5#TRMPBF | Inductor-based boost, 5V/150mA, 1.2MHz, integrated switch; higher efficiency above 2.5V but adds EMI and size. | Superior efficiency and current capability, but requires inductor and more complex filtering. | Choose for higher-power or lower-ripple requirements where board space permits inductor placement. |
Compared with TPS60110IDR and LT1930AES5#TRMPBF, the MAX619CSA+T uniquely balances ultra-low component count, sub-2V start-up, and automatic topology adaptation - making it optimal for minimal-footprint, battery-deep-discharge applications where inductors are prohibited.
Availability
The MAX619CSA+T is available at Aetrix Electronics and suitable for battery-powered microprocessor systems, compact op-amp supplies, and regulated 5V backup power applications requiring stable component supply, long-lifecycle support, and consistent SO-8 packaging.
Supply support for MAX619CSA+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, medical, and portable applications.
The MAX619CSA+T belongs to Maxim's precision charge-pump DC-DC converter product line, engineered specifically for space- and power-constrained battery-operated devices needing clean, regulated 5V without inductors.
FAQ
What is the minimum input voltage required for the MAX619CSA+T to regulate 5V output?
The MAX619CSA+T begins regulating 5V output at VIN = 2.0V, delivering 20mA guaranteed. At this voltage, it operates in voltage-tripler mode to achieve regulation. Below 2.0V, regulation is not assured per datasheet specifications, and output voltage will drop proportionally.
Does the MAX619CSA+T require external compensation components?
No, the MAX619CSA+T uses internal pulse-skipping regulation and does not require external compensation networks. Its stability is ensured by proper selection and placement of the four recommended external capacitors (C1, C2, C3, C4), with no feedback loop components needed.
Can multiple MAX619CSA+T devices be paralleled to increase output current?
Yes - two MAX619CSA+T units can be paralleled to deliver up to 100mA. Connect IN, OUT, and GND pins together; keep C1 and C2 paths separate. Shared input/output capacitors may be used if devices are placed within 5mm, doubling their values to maintain ripple performance.
Is the MAX619CSA+T short-circuit protected?
No, the MAX619CSA+T is not short-circuit protected, as explicitly stated in the datasheet (Note 1 under Absolute Maximum Ratings). Sustained short-circuit conditions may cause overheating or damage; external current limiting or fuse protection is recommended for robust system design.
What is the thermal performance of the MAX619CSA+T in SO-8 package at full load?
In SO-8 package, the MAX619CSA+T has a thermal resistance θJA of 170°C/W. At 50mA output and 3.0V input, power dissipation is ~125mW, resulting in ~21°C junction-to-ambient rise - well within safe operating limits at room temperature with standard PCB copper.
MAX619CSA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 3.6V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 50mA
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX619CSA+T FAQ
1.How can I place an order for MAX619CSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX619CSA+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 MAX619CSA+T reliable?
The price and inventory of MAX619CSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX619CSA+T is usually 5 days.
3.What payment methods are accepted for MAX619CSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX619CSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX619CSA+T?
MAX619CSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX619CSA+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 MAX619CSA+T?
For technical support, including MAX619CSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX619CSA+T requirements.
6.How does Aetrix verify that MAX619CSA+T is sourced from the original manufacturer or authorized distributors?
All MAX619CSA+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 MAX619CSA+T meets industry standards.
7.What is the process for return or replacement of MAX619CSA+T?
All MAX619CSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX619CSA+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 MAX619CSA+T part is unused and in its original packaging.
Return procedure for MAX619CSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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