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Analog Devices Inc./Maxim Integrated MAX619ESA
- Part No.:
- MAX619ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX619ESA.pdf
- Description:
- IC REG CHARGE PUMP 5V 50MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,112
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Product details
Overview
The MAX619ESA from Maxim Integrated is a regulated 5V ±4% charge-pump DC-DC converter designed for battery-powered systems requiring compact, inductorless voltage boosting. It delivers up to 50mA output current from a 2V–3.6V input (e.g., two alkaline or NiMH cells), features 500kHz internal switching, 1µA max shutdown current, and operates across –40°C to +85°C.
For engineers reviewing the MAX619ESA datasheet, MAX619ESA pinout, MAX19ESA application, or MAX619ESA equivalent, key selection criteria include guaranteed output current over temperature, ultra-low shutdown quiescent current, absence of magnetic components, SO-8 package compatibility, and precise 5V regulation without external feedback resistors.
Technical Context
The MAX619ESA uses a pulse-skipping controller to regulate output voltage by dynamically selecting between voltage-doubler (VIN ≥3.0V), voltage-tripler (VIN ≤2.5V), or 2.5× mode (2.5V < VIN < 3.0V) charge-pump operation. Internal circuitry is powered from the higher of VIN or VOUT to maximize efficiency across the input range.
It integrates CMOS-compatible active-high shutdown with load disconnection, supports capacitor-based energy transfer only (no inductors), and achieves typical 80% efficiency at VIN = 2V and IOUT = 20mA. Output ripple is specified at 100mV peak-to-peak under full-load transient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±4% - tightly regulated without external resistors; stable across temperature and line/load variations. |
| Max Output Current | 50mA @ VIN ≥3V - guaranteed delivery over full –40°C to +85°C operating range. |
| Input Voltage Range | 2.0V to 3.6V - supports two-cell battery stacks including depleted alkaline, NiMH, and Li-ion backup sources. |
| Shutdown Current | 1µA max - enables long-term battery preservation in sleep-mode portable instruments. |
| Switching Frequency | 500kHz fixed - allows use of small 0.22µF ceramic flying capacitors and minimizes EMI filtering burden. |
| Operating Temp Range | –40°C to +85°C - qualified for industrial and extended-temperature embedded applications. |
| Package | 8-pin SO - surface-mount compatible with standard reflow profiles; footprint matches industry-standard SOIC-8. |
Pinout & Package
The MAX619ESA is housed in an 8-pin SO (Small Outline) package, 3.9mm × 4.9mm body size, 1.27mm lead pitch, JEDEC MS-012 compliant. Thermal performance supports 471mW continuous power dissipation at +70°C ambient (derated 5.88mW/°C above).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1+ | Positive terminal of flying capacitor C1 | Connects to one plate of first charge-pump capacitor; critical node 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 | Logic-high (>0.7×VIN) halts switching and disconnects OUT from IN; draws ≤10µA. |
| GND | Analog and power ground reference | Common return for all internal circuitry; requires low-impedance PCB plane connection. |
| C2− | Negative terminal of flying capacitor C2 | Second flying capacitor node; shares switching path with C1 in tripler mode. |
| C2+ | Positive terminal of flying capacitor C2 | Completes charge-pump capacitor pair; used in both doubler and tripler configurations. |
| IN | Main input supply connection | Accepts 2V–3.6V source; powers internal logic and supplies charge-pump energy path. |
| OUT | Regulated 5V output | Delivers up to 50mA; drops to 0V during shutdown; requires ≥10µF output capacitance for stability. |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor architecture | Eliminates magnetic EMI, simplifies layout, and reduces BOM cost-uses only four external capacitors. |
| Auto-ranging charge-pump topology | Dynamically selects doubler/tripler/2.5× mode to maintain >75% efficiency across full 2V–3.6V input range. |
| Load-disconnect shutdown | Physically isolates output from input during shutdown-prevents backfeed and preserves battery charge. |
| Ultra-compact solution size | Full functional circuit occupies <0.1in² (≈645mm²) board area-ideal for space-constrained handheld devices. |
| Guaranteed output current over temperature | 50mA minimum at VIN ≥3V and TA = –40°C to +85°C-enables robust design without derating. |
Applications
| Battery-Powered Microprocessor Systems | 5V Flash Memory Programmer |
|---|---|
Use Scenario: Powering 5V-tolerant microcontrollers and peripherals from two AA/AAA cells in portable data loggers. IC Role / Device Role / Timing Role: Regulated 5V supply generator with automatic mode-switching to sustain operation as battery voltage declines. Use Value: Enables direct use of legacy 5V logic without LDO post-regulation; extends runtime via 80% efficiency at 2V input. | Use Scenario: Providing clean, stable 5V programming voltage to parallel NOR/NAND flash devices in field-upgrade tools. IC Role / Device Role / Timing Role: Precision charge-pump voltage source with low output ripple (<100mV) and fast startup (<0.5ms). Use Value: Eliminates need for bulky inductors or separate 5V rails-reduces programmer size and improves reliability. |
| Portable Instruments & Handy-Terminals | Compact 5V Op-Amp Supply |
Use Scenario: Supplying analog front-end circuitry and LCD bias in handheld multimeters and barcode scanners. IC Role / Device Role / Timing Role: Low-noise, inductorless 5V rail generator with 1µA shutdown for intermittent measurement cycles. Use Value: Reduces system standby power by >99% versus linear regulators-extends battery life in duty-cycled instruments. | Use Scenario: Biasing rail-to-rail op-amps in portable signal-conditioning modules where board space is constrained. IC Role / Device Role / Timing Role: Compact, regulated 5V source supporting 20–50mA loads with minimal external components. Use Value: Achieves <0.1in² total solution size using 0.22µF flying caps-enables high-density analog subsystem integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar regulated charge-pump DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60110IDR | Fixed 5V output, 100mA max, 1.8V–3.6V input, 1.2MHz switching, SO-8 package. | Higher output current but higher quiescent current (250µA no-load vs. 150µA for MAX619ESA); less efficient below 2.5V. | Prefer when >50mA load or faster transient response required; verify thermal margin in SO-8 at full load. |
| LT1054CS8#PBF | 5V ±4% output, 120mA max, 3.5V–15V input, 25kHz switching, SO-8 package. | Wider input range but incompatible with sub-3.5V battery sources; larger output ripple (200mV); no shutdown disconnect. | Choose only for systems with ≥3.5V input; not suitable for two-cell battery designs due to minimum VIN violation. |
Compared with TPS60110IDR and LT1054CS8#PBF, the MAX619ESA uniquely balances ultra-low shutdown current (1µA), guaranteed 50mA output down to 2V input, and true load-disconnect functionality-making it optimal for long-life, low-voltage portable systems.
Availability
MAX619ESA is available at Aetrix Electronics and suitable for battery-powered microprocessor systems, portable instruments & handy-terminals, and compact 5V op-amp supply designs requiring stable component supply across industrial temperature ranges.
Supply support for MAX619ESA 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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX619ESA 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 from low-input sources without inductors.
FAQ
What is the maximum output current specification for the MAX619ESA across its full operating temperature range?
The MAX619ESA guarantees 50mA output current when VIN ≥3.0V and over its full –40°C to +85°C operating temperature range. At VIN ≥2.0V, it guarantees 20mA under the same conditions. These values are tested and specified in the official datasheet's Electrical Characteristics table, ensuring design margin for industrial portable equipment.
Does the MAX619ESA require external feedback resistors to set its output voltage?
No, the MAX619ESA does not require external feedback resistors. Its 5V ±4% output is internally regulated using a precision bandgap reference and pulse-skipping control loop. This fixed-output architecture eliminates resistor tolerance errors and reduces component count-critical for miniaturized battery-powered designs using the MAX619ESA.
Can the MAX619ESA operate from a single lithium coin cell (e.g., CR2032)?
No, the MAX619ESA cannot reliably operate from a single CR2032 cell. Its minimum input voltage is 2.0V, and a fresh CR2032 typically starts at ~3.0V but drops rapidly under load. More critically, the MAX619ESA requires ≥2.0V continuously to sustain regulation-CR2032 discharge curves fall below this threshold early in discharge, causing output collapse. The MAX619ESA is designed for two-cell alkaline/NiMH or regulated 2.5–3.6V sources.
What is the purpose of the C1+ and C1− pins on the MAX619ESA, and how are they used in the circuit?
The C1+ and C1− pins on the MAX619ESA connect to the terminals of the first flying capacitor (C1), which stores and transfers charge during the charge-pump cycle. In tripler mode, both C1 and C2 participate; in doubler mode, only C2 is active. These pins interface directly with internal MOSFET switches-correct polarity and low-ESR ceramic capacitor placement (typically 0.22µF) is essential for stable MAX619ESA operation and efficiency.
Is the MAX619ESA pin-compatible with other variants in the MAX619 family, such as the MAX619CSA or MAX619EPA?
Yes, the MAX619ESA is pin-compatible with all other MAX619 variants-including MAX619CSA, MAX619EPA, and MAX619CPA-because all share identical 8-pin DIP or SO footprints and identical pin functions. The only differences are temperature rating (–40°C to +85°C for ESA), packaging (SO), and screening level. No PCB redesign is needed when upgrading from CSA to ESA for extended-temperature operation.
MAX619ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX619ESA FAQ
1.How can I place an order for MAX619ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX619ESA 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 MAX619ESA reliable?
The price and inventory of MAX619ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX619ESA is usually 5 days.
3.What payment methods are accepted for MAX619ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX619ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX619ESA?
MAX619ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX619ESA 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 MAX619ESA?
For technical support, including MAX619ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX619ESA requirements.
6.How does Aetrix verify that MAX619ESA is sourced from the original manufacturer or authorized distributors?
All MAX619ESA 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 MAX619ESA meets industry standards.
7.What is the process for return or replacement of MAX619ESA?
All MAX619ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX619ESA, 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 MAX619ESA part is unused and in its original packaging.
Return procedure for MAX619ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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