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Analog Devices Inc./Maxim Integrated MAX619EPA
- Part No.:
- MAX619EPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX619EPA.pdf
- Description:
- IC REG CHARGE PUMP 5V 50MA 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,837
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Product details
Overview
The MAX619EPA 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 over –40°C to +85°C, accepts 2V–3.6V input (e.g., two alkaline or NiMH cells), and operates with only four external capacitors. Its role is to generate a stable 5V rail for microprocessor peripherals, flash memory programming, or op-amp supplies in space-constrained portable instruments.
For engineers reviewing the MAX619EPA datasheet, MAX619EPA pinout, MAX619EPA application, or MAX619EPA equivalent, key selection criteria include guaranteed 50mA output at VIN ≥3V across industrial temperature range, 500kHz fixed-frequency operation, logic-controlled shutdown with 1µA max quiescent current, and compatibility with 0.22µF flying capacitors in minimal 0.1in² layout.
Technical Context
The MAX619EPA uses a pulse-skipping controller to regulate output voltage by dynamically switching between voltage-doubler (VIN = 3.0–3.6V), voltage-tripler (VIN = 2.0–2.5V), and 2.5× mode (VIN = 2.5–3.0V) charge-pump topologies. Internal circuitry selects the higher of VIN or VOUT as its supply rail to maximize efficiency across the input range.
It features CMOS-compatible SHDN input that disconnects OUT from IN during shutdown, eliminating reverse current path. No internal short-circuit protection is provided, and output ripple is specified at ≤100mV peak-to-peak under full load with recommended capacitor values.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±4% (4.8V–5.2V); ensures TTL/CMOS logic compatibility and flash memory VCC margin |
| Max Output Current | 50mA at VIN ≥3V over –40°C to +85°C; supports microcontroller I/O banks and small-signal analog circuits |
| Input Voltage Range | 2.0V–3.6V; matches nominal voltage of two primary or rechargeable cells without regulation overhead |
| Switching Frequency | 500kHz fixed; enables use of small 0.22µF ceramic flying capacitors and reduces EMI filtering burden |
| No-Load Supply Current | 170µA max; extends battery life in standby modes of handheld terminals and remote sensors |
| Shutdown Current | 1µA max; allows deep sleep states in battery-backed data acquisition systems |
| Operating Temperature | –40°C to +85°C; qualified for industrial embedded control and automotive accessory modules |
Pinout & Package
The MAX619EPA is housed in an 8-pin plastic DIP package (0.300" wide), compatible with through-hole assembly and manual prototyping. Pin spacing is 0.100", and body dimensions are 0.300" × 0.400".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1+ | Positive terminal of flying capacitor C1 | Connects to internal switch node for charge transfer in tripler/doubler cycles; requires low-ESR 0.22µF ceramic |
| C1− | Negative terminal of flying capacitor C1 | Reference node for C1 charging phase; tied internally to GND during discharge cycle |
| SHDN | Active-high CMOS shutdown control | Pull high to disable output and disconnect load; pull low (≤0.4V) for normal operation |
| GND | Power and signal reference ground | Substrate connection point; must be low-impedance return path for flying capacitor currents |
| C2− | Negative terminal of flying capacitor C2 | Shared node with C1− in doubler mode; critical for minimizing charge redistribution loss |
| C2+ | Positive terminal of flying capacitor C2 | Second switch node for series/parallel capacitor reconfiguration; enables topology switching |
| IN | Main input power supply | Accepts 2V–3.6V unregulated source; powers internal logic and charge pump drivers |
| OUT | Regulated 5V output | Delivers up to 50mA; drops to 0V when SHDN is high; not short-circuit protected |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-regulated charge pump | 5V ±4% output maintained via pulse-skipping control-no external feedback components required |
| Topology auto-selection | Dynamically switches between doubler, tripler, and 2.5× modes based on VIN to sustain >80% efficiency from 2V to 3.6V |
| Inductorless design | Eliminates magnetic components and associated EMI, enabling ultra-low-noise supply for precision analog front-ends |
| Ultra-low shutdown current | 1µA max ensures <1µA system leakage during extended battery storage or sleep intervals |
| Load-disconnect shutdown | Internal switch isolates OUT from IN during shutdown-prevents backfeed into depleted battery sources |
Applications
| Portable Instrument Power | Flash Memory Programming |
|---|---|
Use Scenario: Handheld multimeter or gas detector operating from two AA batteries. IC Role / Device Role / Timing Role: Generates clean 5V rail for MCU, LCD driver, and ADC reference from declining 2.0–3.2V battery stack. Use Value: Maintains 5V ±4% output down to 2.0V input, enabling full functionality until battery depletion-no brown-out resets. | Use Scenario: In-system programming of 5V NOR flash in field-deployable IoT gateway. IC Role / Device Role / Timing Role: Supplies regulated 5V VPP/VCC during write/erase cycles without drawing from main system rail. Use Value: Delivers 50mA peak current with <100mV ripple, meeting JEDEC flash timing margins for reliable programming. |
| Remote Data Acquisition | Compact Op-Amp Supply |
Use Scenario: Battery-powered sensor node logging temperature/humidity every 10 minutes. IC Role / Device Role / Timing Role: Powers 5V rail for low-power SAR ADC and RF transceiver during brief active bursts. Use Value: 1µA shutdown current extends 2xAA battery life to >5 years in duty-cycled operation. | Use Scenario: Portable audio preamplifier using dual-supply op-amps with single-ended 5V input. IC Role / Device Role / Timing Role: Generates positive 5V rail from 3V coin cell or two alkaline cells; complements negative charge pump or virtual ground. Use Value: 0.1in² total footprint (IC + 4 caps) fits inside compact enclosure; no inductor vibration or saturation issues. |
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 |
|---|---|---|---|
| MAX680EPA | Fixed 5V output, 100mA max, wider 1.5V–6.0V input, no shutdown control | Lacks logic-controlled shutdown and load disconnect; higher output current but less precise regulation (±5%) | Select MAX680EPA only if higher current and wider input range outweigh need for shutdown isolation and tighter voltage tolerance. |
| TC7660HCPA | Unregulated voltage inverter (VOUT ≈ –VIN); requires external feedback for regulation; 20mA max | Not a drop-in replacement-requires external op-amp and reference to achieve 5V regulation; lower current capability | Choose TC7660HCPA only for cost-sensitive designs where external regulation circuitry is already present and 50mA output is not required. |
Compared with MAX619EPA, MAX680EPA offers higher output current but sacrifices shutdown control and tight regulation, while TC7660HCPA lacks integrated regulation entirely-making MAX619EPA the sole choice for compact, self-contained 5V generation with industrial temperature support and load isolation.
Availability
MAX619EPA is available at Aetrix Electronics and suitable for portable instrumentation, flash memory programming, and remote data-acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX619EPA 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 MAX619 belongs to Maxim's precision charge-pump DC-DC converter product line, engineered specifically for compact, low-noise, battery-powered systems needing regulated 5V from low-voltage primary cells without inductors.
FAQ
What is the guaranteed output current of the MAX619EPA over its full operating temperature range?
The MAX619EPA guarantees 50mA output current when VIN ≥3.0V across its full –40°C to +85°C operating temperature range. At VIN ≥2.0V, it guarantees 20mA over the same range. These values are tested and specified per the datasheet's Electrical Characteristics table, ensuring consistent performance in industrial environments without derating.
Does the MAX619EPA require external feedback components to maintain 5V regulation?
No, the MAX619EPA does not require external feedback components. It integrates a precision bandgap reference and pulse-skipping control loop that maintains 5V ±4% regulation autonomously. The output voltage accuracy is achieved internally-no resistors, op-amps, or compensation networks are needed, reducing bill-of-materials and PCB area.
Can the MAX619EPA be used with lithium coin cells such as CR2032?
Yes, the MAX619EPA can be used with a CR2032 lithium coin cell, which provides ~3.0V nominal voltage. Since the MAX619EPA operates from 2.0V to 3.6V and delivers 50mA at VIN ≥3.0V, it supports full-rated output from a fresh CR2032. Its 170µA no-load current also minimizes drain during idle periods, extending usable battery life.
What happens to the output during shutdown mode of the MAX619EPA?
During shutdown mode (SHDN = logic high), the MAX619EPA halts all internal switching, disconnects the OUT pin from the IN pin via an internal MOSFET switch, and allows VOUT to discharge to 0V. This prevents backfeed into the input source and eliminates load current-critical for preserving battery charge in always-on sensor nodes.
Is the MAX619EPA pin-compatible with other variants like MAX619CPA or MAX619ESA?
Yes, the MAX619EPA shares identical pinout and electrical behavior with MAX619CPA (0°C to +70°C) and MAX619ESA (–40°C to +85°C SO package). All three use the same 8-pin DIP/SO footprint and functional mapping. The only differences are temperature grade and package type-so MAX619EPA can replace MAX619CPA in industrial applications requiring extended temperature support.
MAX619EPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX619EPA FAQ
1.How can I place an order for MAX619EPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX619EPA 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 MAX619EPA reliable?
The price and inventory of MAX619EPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX619EPA is usually 5 days.
3.What payment methods are accepted for MAX619EPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX619EPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX619EPA?
MAX619EPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX619EPA 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 MAX619EPA?
For technical support, including MAX619EPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX619EPA requirements.
6.How does Aetrix verify that MAX619EPA is sourced from the original manufacturer or authorized distributors?
All MAX619EPA 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 MAX619EPA meets industry standards.
7.What is the process for return or replacement of MAX619EPA?
All MAX619EPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX619EPA, 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 MAX619EPA part is unused and in its original packaging.
Return procedure for MAX619EPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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