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Analog Devices Inc./Maxim Integrated MAX619ESA+T
- Part No.:
- MAX619ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX619ESA+T.pdf
- Description:
- IC REG CHARGE PUMP 5V 50MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,657
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Product details
Overview
The MAX619ESA+T from Maxim Integrated is a regulated 5V ±4% step-up charge-pump DC-DC converter designed for low-voltage battery-powered systems. It delivers up to 50mA output current from a 2V–3.6V input (e.g., two alkaline or NiMH cells), features 500kHz internal oscillator, 1µA max shutdown current, and operates across –40°C to +85°C. Used in compact 5V op-amp supplies and flash memory programmers.
For engineers reviewing the MAX619ESA+T datasheet, MAX619ESA+T pinout, MAX619ESA+T application, or MAX619ESA+T equivalent, key selection criteria include guaranteed 50mA output at VIN ≥3V, no-inductor architecture, logic-controlled shutdown with load disconnect, SO-8 package compatibility, and temperature-stable regulation over –40°C to +85°C.
Technical Context
The MAX619ESA+T employs 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 comparator selects higher of VIN or VOUT to power control circuitry, improving efficiency across input range.
It requires only four external capacitors: two 0.22µF flying caps (C1, C2) and two 10µF bulk caps (C3, C4). No inductors are needed-reducing EMI and board area to under 0.1in². Shutdown mode halts switching and physically disconnects OUT from IN via internal switch.
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 microprocessor I/O rails and small-signal op-amps |
| Input Voltage Range | 2.0V–3.6V; matches nominal voltage of two primary or rechargeable cells |
| Shutdown Current | 1µA max; enables multi-year battery life in standby instrumentation |
| Oscillator Frequency | 500kHz fixed; allows use of small ceramic flying capacitors and minimizes output ripple |
| Operating Temp Range | –40°C to +85°C; qualified for industrial portable equipment and remote data-acquisition systems |
| Efficiency | 80% typ. at VIN = 2V, IOUT = 20mA; eliminates thermal derating concerns in sealed enclosures |
Pinout & Package
MAX619ESA+T is housed in an 8-pin SO (Small Outline) package, 150mil width, with standard JEDEC MS-012AC footprint and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1+ | Positive terminal of flying capacitor C1 | Connects to internal S1A/S1B switches; critical path for charge transfer in tripler/doubler modes |
| C1− | Negative terminal of flying capacitor C1 | Reference node for C1 charging cycle; tied internally to GND during discharge phase |
| SHDN | Active-high CMOS shutdown control | Logic high (>0.7×VIN) disables switching and opens internal OUT–IN disconnect switch |
| GND | Analog and power ground reference | Substrate connection point; must be low-impedance star point for stable regulation |
| C2− | Negative terminal of flying capacitor C2 | Shared node with C1− in doubler mode; forms series stack with C2+ in tripler mode |
| C2+ | Positive terminal of flying capacitor C2 | Switches between IN and OUT nodes; carries peak currents up to 200mA |
| OUT | +5V regulated output | Provides load current; drops to 0V in shutdown due to internal disconnection from IN |
| IN | Main input supply (2V–3.6V) | Feeds both charge-pump circuitry and internal bias generator; powers device when >VOUT |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor operation | Eliminates magnetic EMI, simplifies layout, and reduces BOM cost vs. inductor-based boost converters |
| Load-disconnect shutdown | Prevents battery drain through load leakage paths when system is off-critical for backup power integrity |
| Auto-ranging pump topology | Dynamically selects 2×, 2.5×, or 3× voltage multiplication to maintain >75% efficiency across full 2V–3.6V input range |
| Ultra-low quiescent current | 150µA max operating / 1µA max shutdown ensures >10-year shelf life in lithium coin-cell applications |
| Minimal external components | Only four capacitors required (two 0.22µF + two 10µF); enables PCB area <0.1in² including all passives |
Applications
| Two-Cell to 5V Conversion | Local 3V-to-5V Conversion |
|---|---|
Use Scenario: Powering 5V logic interfaces (e.g., UART, SPI) from two AA/AAA batteries in handheld test equipment. IC Role / Device Role / Timing Role: Step-up DC-DC converter providing isolated, regulated 5V rail independent of battery discharge curve. Use Value: Maintains stable 5V output down to 2.0V input, enabling full battery utilization without brownout resets. |
Use Scenario: Generating local 5V supply for analog front-end op-amps in a 3.3V microcontroller-based sensor node. IC Role / Device Role / Timing Role: Local charge-pump regulator decoupled from main system rail to reduce noise coupling into precision analog stages. Use Value: Delivers clean 5V at 20mA with <100mV ripple-sufficient for rail-to-rail op-amps driving 12-bit ADCs. |
| Battery-Powered Microprocessor Systems | 5V Flash Memory Programmer |
Use Scenario: Supplying 5V VPP programming voltage and I/O rail for embedded Flash memory in portable data loggers. IC Role / Device Role / Timing Role: Dual-role power source: provides steady 5V for I/O and momentary 5V/40mA pulses for Flash write cycles. Use Value: Guaranteed 50mA output at VIN ≥3V supports simultaneous I/O + programming without external boost staging. |
Use Scenario: Portable USB-connected Flash programmer requiring self-contained 5V generation from 3.3V host bus power. IC Role / Device Role / Timing Role: Compact, low-noise 5V source eliminating need for separate USB 5V rail or inductor-based conversion. Use Value: 0.1in² solution fits within tight USB-A plug housing; 500kHz switching avoids USB 1.1/2.0 frequency interference bands. |
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 |
|---|---|---|---|
| TPS60403DBVR | Fixed 5V output, 60mA max, 1.8V–5.5V input, 1.2MHz switching, 2.5µA shutdown current | Higher input range supports single Li-ion; higher frequency allows smaller caps but increases EMI sensitivity | Preferred when input may exceed 3.6V or when board space permits tighter cap footprints |
| LT1930ES5#TRMPBF | Inductor-based boost, 5V/100mA, 1.5V–10V input, 1.2MHz, 20µA shutdown, integrated switch | Delivers higher current and wider input range but requires inductor and generates more EMI | Chosen when >50mA load or >3.6V input is required and inductor placement is acceptable |
Compared with TPS60403DBVR and LT1930ES5#TRMPBF, the MAX619ESA+T uniquely balances ultra-low shutdown current (1µA), no-inductor design, and guaranteed 50mA at low VIN (≥3V), making it optimal for space-constrained, long-life dual-cell systems where EMI and component count are critical.
Availability
MAX619ESA+T is available at Aetrix Electronics and suitable for battery-powered microprocessor-based systems, portable instruments & handy-terminals, and compact 5V op-amp supplies requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX619ESA+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) designs precision analog, mixed-signal, and power-management ICs for industrial, medical, communications, and consumer applications.
The MAX619ESA+T belongs to Maxim's charge-pump DC-DC converter product line, engineered specifically for ultra-compact, low-noise, battery-efficient 5V generation in portable instrumentation and microcontroller peripheral powering.
FAQ
What is the guaranteed output current capability of the MAX619ESA+T across its operating temperature range?
The MAX619ESA+T guarantees 50mA output current when VIN ≥3V and operating from –40°C to +85°C. At VIN ≥2V, it guarantees 20mA across the same temperature range. These values are tested and specified in the electrical characteristics table under "Output Current Guaranteed over Temperature" and reflect performance with standard 0.22µF flying capacitors and 10µF bulk capacitors.
Does the MAX619ESA+T require an external feedback resistor network to set the output voltage?
No, the MAX619ESA+T 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 fixed and factory-trimmed-no external components are needed to configure or adjust VOUT.
Can the MAX619ESA+T be used with input voltages below 2.0V or above 3.6V?
No-the MAX619ESA+T is rated for absolute maximum input of +5.5V and minimum functional input of 2.0V. Operation below 2.0V may cause regulation loss or startup failure; operation above 3.6V exceeds recommended conditions and risks reduced reliability or parametric shift. For wider input ranges, consider alternatives like the TPS60403DBVR.
How does the MAX619ESA+T achieve load disconnection during shutdown?
The MAX619ESA+T integrates a MOSFET switch between IN and OUT that opens when SHDN is driven high. This physically isolates the load from the input source, preventing reverse current flow and battery drain through downstream circuitry. Unlike simple enable/disable, this feature ensures true zero-load current draw from the battery in shutdown mode.
Is the MAX619ESA+T pin-compatible with other variants in the MAX619 family, such as MAX619CSA or MAX619EPA?
Yes-the MAX619ESA+T shares identical pinout and footprint with all other MAX619 variants (CPA, CSA, EPA, EJA) in 8-pin DIP and SO packages. Differences are limited to temperature grade and packaging: MAX619ESA+T is rated for –40°C to +85°C in SO-8, while MAX619CSA is 0°C to +70°C in the same package. No PCB redesign is needed when upgrading temperature range.
MAX619ESA+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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX619ESA+T FAQ
1.How can I place an order for MAX619ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX619ESA+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 MAX619ESA+T reliable?
The price and inventory of MAX619ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX619ESA+T is usually 5 days.
3.What payment methods are accepted for MAX619ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX619ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX619ESA+T?
MAX619ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX619ESA+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 MAX619ESA+T?
For technical support, including MAX619ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX619ESA+T requirements.
6.How does Aetrix verify that MAX619ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX619ESA+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 MAX619ESA+T meets industry standards.
7.What is the process for return or replacement of MAX619ESA+T?
All MAX619ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX619ESA+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 MAX619ESA+T part is unused and in its original packaging.
Return procedure for MAX619ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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