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Analog Devices Inc./Maxim Integrated MAX619CPA
- Part No.:
- MAX619CPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX619CPA.pdf
- Description:
- IC REG CHARGE PUMP 5V 50MA 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,063
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Product details
Overview
The MAX619CPA 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, 150µA max no-load supply current, and logic-controlled shutdown with 1µA max quiescent draw. It serves as a primary 5V supply in portable microprocessor systems and flash memory programmers.
For engineers reviewing the MAX619CPA datasheet, MAX619CPA pinout, MAX619CPA application, or MAX619CPA equivalent, key selection criteria include guaranteed 50mA output at VIN ≥3V, ±4% output regulation over temperature, ultra-low shutdown current, load-disconnect capability during shutdown, and compatibility with standard 0.22µF flying capacitors and 10µF bulk caps in minimal 0.1in² layout.
Technical Context
The MAX619CPA employs a pulse-skipping controller to regulate output voltage by dynamically selecting between voltage-doubler (VIN = 3.0–3.6V), voltage-tripler (VIN = 2.0–2.5V), and hybrid 2.5× mode (VIN = 2.5–3.0V) charge-pump operation. This adaptive topology maintains >80% efficiency across its full input range, with peak efficiency reaching ~90% at VIN = 3.6V and IOUT = 10mA.
Its CMOS-compatible SHDN input enables precise system-level power sequencing, and internal circuitry automatically selects the higher of VIN or VOUT to bias internal logic-ensuring stable operation even as input voltage declines. The device lacks short-circuit protection and requires external capacitors only-no inductors-making it suitable for EMI-sensitive, space-constrained applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±4% (4.8V–5.2V); tightly regulated without external feedback components |
| Max Output Current | 50mA at VIN ≥3V; sufficient for 5V microcontrollers, op-amps, and flash programming circuits |
| Input Voltage Range | 2.0V to 3.6V; matches nominal voltage of two series alkaline/NiMH/Li-ion cells |
| Switching Frequency | 500kHz fixed; enables use of small ceramic flying capacitors and minimizes output ripple |
| No-Load Supply Current | ≤170µA; supports multi-week battery life in always-on low-duty-cycle portable instruments |
| Shutdown Current | ≤10µA; ensures negligible drain during system sleep modes |
| Operating Temp Range | 0°C to +70°C; validated for commercial-grade embedded and handheld equipment |
Pinout & Package
The MAX619CPA is housed in an 8-pin plastic DIP package (0.300" wide), with through-hole mounting and industry-standard lead spacing. Pin 1 is C1+, and pin 8 is C1−; the package includes exposed die pad connected internally to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1+ | Positive terminal of flying capacitor C1 | Connects to one plate of first charge-pump capacitor; critical path for energy transfer in tripler/doubler modes |
| C1− | Negative terminal of flying capacitor C1 | Reference node for C1; tied to GND during charge phase in tripler mode |
| SHDN | Active-high CMOS shutdown control | Pull high to disable output and disconnect load from input; pull low for normal operation |
| GND | Analog and power ground reference | Common return for all internal circuitry and external capacitors; substrate connection point |
| C2− | Negative terminal of flying capacitor C2 | Switched node shared with C1− in doubler mode; forms series stack with C2+ in tripler discharge cycle |
| C2+ | Positive terminal of flying capacitor C2 | Output-side flying cap node; directly contributes to boosted output voltage generation |
| OUT | Regulated +5V output | Delivers stabilized 5V to load; drops to 0V when SHDN is asserted |
| IN | Main input supply (2V–3.6V) | Primary power source; also used as bias rail for internal logic when higher than VOUT |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless charge-pump topology | Eliminates magnetic components and associated EMI, enabling PCB layouts compliant with stringent radiated emissions limits |
| Adaptive voltage multiplication | Automatically switches between 2×, 2.5×, and 3× modes to maintain >80% efficiency across full 2V–3.6V input range |
| Load-disconnect during shutdown | Prevents backfeed from output to input rail, essential for battery isolation in multi-rail portable systems |
| Ultra-small footprint solution | Complete circuit occupies <0.1in² using only four passive components: two 0.22µF and two 10µF capacitors |
| CMOS-compatible shutdown interface | Accepts standard logic-level signals without level-shifting; draws <10µA at VIH = 0.7×VIN |
Applications
| Battery-Powered Microprocessor Systems | 5V Flash Memory Programmer |
|---|---|
Use Scenario: Portable data logger powered by two AA batteries requires stable 5V for an 8-bit MCU and serial EEPROM. IC Role / Device Role / Timing Role: Primary regulated 5V supply generating clean, low-noise power from declining battery voltage. Use Value: Delivers 50mA at 5V ±4% down to 3V input, extending usable battery life while eliminating inductor-related size and cost penalties. | Use Scenario: Handheld device programs NAND flash via USB-hosted firmware update, requiring brief 5V pulses during write cycles. IC Role / Device Role / Timing Role: On-demand 5V charge-pump supply activated only during flash programming sequences. Use Value: 1µA shutdown current prevents standby drain; fast 0.5ms wake-up time ensures responsive programming without delay. |
| Compact 5V Op-Amp Supply | Two Battery Cells to 5V Conversion |
Use Scenario: Portable medical sensor uses rail-to-rail op-amps for analog signal conditioning, needing low-noise 5V from coin-cell or dual-AA sources. IC Role / Device Role / Timing Role: Low-EMI, capacitor-only DC-DC stage powering precision analog front-end. Use Value: No inductor means no magnetic coupling into sensitive analog traces; 100mVpp output ripple meets typical op-amp PSRR requirements. | Use Scenario: Industrial handheld terminal runs from two 1.5V alkaline cells and must sustain 5V logic levels across full battery discharge curve (3.0V → 2.0V). IC Role / Device Role / Timing Role: Input-voltage-adaptive boost converter maintaining regulation despite falling cell voltage. Use Value: Tripler-mode operation at 2.0V input ensures 5V output remains within ±4% tolerance even at end-of-life battery voltage. |
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 |
|---|---|---|---|
| MAX680CPA | Unregulated 5V output (±8%), fixed 100kHz oscillator, 25mA max output, no shutdown | Lacks regulation and enable control; suited only for non-critical digital logic rails | Select MAX619CPA when ±4% regulation, shutdown, or >25mA load current is required |
| TPS60403DBVR | Regulated 5V ±4%, 60mA output, 1.8V–5.5V input, integrated soft-start, 1.2MHz switching | Wider input range and higher frequency allow smaller capacitors but increases EMI sensitivity | Choose MAX619CPA for lowest EMI, proven 0.1in² layout, and legacy design continuity in commercial-temp battery systems |
Compared with MAX680CPA and TPS60403DBVR, the MAX619CPA uniquely balances tight regulation, ultra-low shutdown current, and minimal board area-making it optimal for space-constrained, battery-life-critical commercial-grade portable instruments where EMI and layout simplicity are prioritized over input voltage flexibility or soft-start.
Availability
MAX619CPA is available at Aetrix Electronics and suitable for battery-powered microprocessor systems, portable instrumentation, and compact 5V op-amp supplies requiring stable component supply across long-lifecycle consumer and industrial programs.
Supply support for MAX619CPA 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 MAX619CPA belongs to Maxim's precision charge-pump DC-DC converter product line, engineered specifically for space- and power-constrained portable electronics needing reliable 5V generation from low-voltage battery sources without inductors.
FAQ
What is the maximum continuous output current of the MAX619CPA at 2.5V input?
The MAX619CPA guarantees 20mA output current at VIN ≥2V and 50mA at VIN ≥3V. At exactly 2.5V input, the device operates in hybrid 2.5× mode and supports up to approximately 35mA continuously under typical conditions-verified by load-regulation curves in the datasheet showing VOUT remaining within ±4% up to 35mA at VIN = 2.5V. Derating is recommended for sustained operation near thermal limits in the 8-pin DIP package.
Does the MAX619CPA require external feedback resistors to set output voltage?
No, the MAX619CPA does not require external feedback resistors. Its 5V ±4% output is internally regulated using a precision bandgap reference and pulse-skipping control loop. The output voltage is factory-trimmed and fixed-no resistor network or external components are needed to configure or adjust VOUT, simplifying design and reducing bill-of-materials count.
Can the MAX619CPA be used with lithium coin-cell batteries?
Yes, the MAX619CPA can be used with lithium coin-cell batteries such as CR2032 (nominal 3.0V, range ~2.0V–3.3V), as its 2V–3.6V input range fully covers the discharge profile. At 2.0V input, it delivers 20mA with 5V ±4% regulation in tripler mode. However, coin-cell capacity limits total energy delivery-designers should verify runtime against load duty cycle and typical 150µA no-load current.
What is the purpose of the C1+ and C1− pins on the MAX619CPA?
The C1+ and C1− pins on the MAX619CPA connect to the first flying capacitor (C1) in the charge-pump network. During tripler-mode operation, C1 charges to VIN at C1+/C1− and then connects in series with C2 to generate boosted voltage. These pins define the primary energy-transfer path and must be routed with short, low-inductance traces to minimize switching losses and ripple-critical for achieving specified 50mA output and 100mVpp ripple performance.
Is the MAX619CPA pin-compatible with the MAX619CSA?
Yes, the MAX619CPA and MAX619CSA share identical pin configuration, electrical specifications, and functional behavior-the only difference is package type: 8-pin plastic DIP (CPA) versus 8-pin SO (CSA). Both operate over 0°C to +70°C and accept the same external components. Layout adaptation is required for mounting, but no schematic or firmware changes are needed when substituting between these variants.
MAX619CPA 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX619CPA FAQ
1.How can I place an order for MAX619CPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX619CPA 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 MAX619CPA reliable?
The price and inventory of MAX619CPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX619CPA is usually 5 days.
3.What payment methods are accepted for MAX619CPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX619CPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX619CPA?
MAX619CPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX619CPA 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 MAX619CPA?
For technical support, including MAX619CPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX619CPA requirements.
6.How does Aetrix verify that MAX619CPA is sourced from the original manufacturer or authorized distributors?
All MAX619CPA 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 MAX619CPA meets industry standards.
7.What is the process for return or replacement of MAX619CPA?
All MAX619CPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX619CPA, 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 MAX619CPA part is unused and in its original packaging.
Return procedure for MAX619CPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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