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Analog Devices Inc. DC342A-A
- Part No.:
- DC342A-A
- Manufacturer:
- Analog Devices Inc.
- Package:
- Datasheet:
-
DC342A-A.pdf
- Description:
- EVAL BOARD FOR LTC19111.8
- Quantity:
- Payment:
- Shipping:
Inventory:3,274
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Product details
Overview
DC342A-A from Analog Devices is a demonstration board featuring the LTC1911 low-noise, constant-frequency step-down charge pump IC, configured to deliver a regulated 1.8V±4% output from a 3.3V input, supporting up to 250mA load current with sourcing-only operation and jumper-controlled enable/disable.
For engineers reviewing the DC342A-A datasheet, DC342A-A pinout, DC342A-A application, or DC342A-A equivalent, this page provides verified board-level specifications, functional configuration details, ripple and soft-start test procedures, jumper-defined operating modes, and design context for evaluating charge-pump-based low-noise power conversion in space-constrained applications.
Technical Context
The DC342A-A implements the LTC1911 in a fixed-output, step-down charge-pump topology with constant switching frequency, optimized for low output voltage ripple and minimal EMI. It uses external ceramic capacitors and a single jumper (JP1) to control device enable state.
Soft-start is implemented via the SS/SD pin, requiring an external NMOS FET (e.g., 2N7002) driven by a 50Hz 5V square wave to demonstrate controlled VOUT ramp-up. The board supports only sourcing current - no sinking capability - and requires proper oscilloscope probe grounding for accurate VIN/VOUT ripple measurement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8V ±4% - tightly regulated fixed output for logic supply rails requiring stable low-voltage bias. |
| Input Voltage | 3.3V - designed exclusively for single-supply operation from standard LDO or regulator outputs. |
| Max Load Current | 250mA - maximum continuous sourcing current; no sinking capability limits use to unidirectional loads. |
| Switching Frequency | Constant frequency - enables predictable EMI filtering and avoids frequency-hopping noise in sensitive analog sections. |
| Ripple Performance | Low noise - achieved via optimized capacitor placement, constant frequency, and charge-pump architecture without inductors. |
| Enable Control | JP1 jumper - mechanical ON/OFF selection for VOUT enable; no logic-level interface provided on board. |
Availability
DC342A-A is available at Aetrix Electronics and suitable for low-noise power conversion, portable medical sensor biasing, and RF front-end supply regulation requiring stable component supply and rapid evaluation of charge-pump performance.
Supply support for DC342A-A 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
Analog Devices is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and power management.
The DC342A-A belongs to Analog Devices' demonstration board portfolio for power management ICs, specifically designed to accelerate evaluation of the LTC1911 charge-pump converter in real-world low-EMI, inductorless power applications.
FAQ
What is the primary function of the DC342A-A demonstration board?
The DC342A-A demonstration board implements the LTC1911 step-down charge pump to generate a regulated 1.8V±4% output from a 3.3V input. It serves as a ready-to-use platform for evaluating low-noise, constant-frequency, inductorless power conversion. The DC342A-A includes jumpers, test points, and layout optimizations to validate ripple, soft-start, and load regulation behavior without custom PCB design.
Does the DC342A-A support output current sinking?
No, the DC342A-A does not support output current sinking. Its underlying LTC1911 IC is sourcing-only, meaning load current must flow from VOUT to GND. Attempting to sink current may damage the board or cause undefined behavior. This limitation is inherent to the DC342A-A's charge-pump architecture and is explicitly documented in its Quick Start Guide.
How is enable/disable functionality implemented on the DC342A-A?
The DC342A-A uses a physical jumper (JP1) to control enable/disable: the lower position turns the LTC1911 ON (VOUT active), and the upper position disables it (VOUT = 0V). No logic-level enable pin is exposed - the DC342A-A does not provide a voltage-controlled or microcontroller-driven enable interface, making it suited for manual or fixed-mode evaluation only.
What is the recommended method to measure output ripple on the DC342A-A?
To accurately measure output ripple on the DC342A-A, remove the oscilloscope probe's grabber and plastic sleeve, then directly touch the probe tip between VOUT and GND (as shown in Figure 4 of the Quick Start Guide). Avoid long ground leads to prevent noise coupling. A 50Ω load must be applied during measurement, and the JP1 jumper must be in the ON position for valid results.
Can the DC342A-A be used with input voltages other than 3.3V?
No - the DC342A-A is strictly designed for 3.3V input operation. Its component selection (capacitors, layout, and LTC1911 configuration) is optimized for that rail. Using other input voltages may result in incorrect output regulation, excessive ripple, or failure to start. The DC342A-A documentation specifies "connect a 3.3V, 500mA bench supply" as the sole validated input condition.
DC342A-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 1.8V
- Voltage - Input:
- 250mA
- Regulator Topology:
- 3.3V
- Frequency - Switching:
- Buck
- Contents:
- -
- Utilized IC / Part:
- Board(s)
- Power - Output:
- LTC1911-1.8
DC342A-A FAQ
1.How can I place an order for DC342A-A through Aetrix?
Please submit a Request for Quotation (RFQ) for DC342A-A 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 DC342A-A reliable?
The price and inventory of DC342A-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DC342A-A is usually 5 days.
3.What payment methods are accepted for DC342A-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DC342A-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DC342A-A?
DC342A-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DC342A-A 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 DC342A-A?
For technical support, including DC342A-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DC342A-A requirements.
6.How does Aetrix verify that DC342A-A is sourced from the original manufacturer or authorized distributors?
All DC342A-A 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 DC342A-A meets industry standards.
7.What is the process for return or replacement of DC342A-A?
All DC342A-A units undergo pre-shipment inspection (PSI). If there is an issue with DC342A-A, 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 DC342A-A part is unused and in its original packaging.
Return procedure for DC342A-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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