Features and Benefits
- 0.6V ±0.5% Initial Accuracy at +25°C
- 0.6V ±1% Accuracy from -40°C to +85°C
- 0.6V ±1% Initial Accuracy at +25°C
- 0.6V ±1.8% Accuracy from -40°C to +85°C
- Sinks 20mA at 0.2V to 18V
- Input Voltage Range from 1.7V to 28V
- Directly Drives Optocouplers
- 0.2Ω Dynamic Output Impedance
- Space-Saving 5-Pin SC70 or SOT23 Packages
The MAX8515A/MAX8515 shunt regulators simplify the design of voltage regulation and overvoltage protection (OVP) functions in high-accuracy isolated DC-to-DC converters with output voltages as low as 0.6V. The devices have supply voltage and feedback inputs separated from the output shunt stage, and can operate directly from the DC-to-DC converter output stage when the output voltage is 1.8V to 18V. Alternately, the MAX8515A/MAX8515 input stage can be biased from an unregulated 1.7V to 28V supply, independent of DC-to-DC converter output voltage. The MAX8515A/MAX8515 shunts 20mA when the output voltage is as low as 0.2V.
The MAX8515A features an initial output accuracy of 0.5% at +25°C and 1% from -40°C to +85°C and provides the output voltage regulation function for isolated DC-to-DC converters. The MAX8515 features initial output accuracy of 1% at +25°C and 1.8% from -40°C to +85°C and can provide an output OVP function for isolated DC-to-DC converters. High open-loop bandwidth allows design of high-bandwidth DC-to-DC converters.
Low-cost, low-dropout linear regulators can be designed with the MAX8515A/MAX8515 and an external NPN transistor for cost-conscious applications that do not require overcurrent, short-circuit, or overtemperature protection.
The MAX8515/MAX8515A are available in space-saving 5-pin SC70 and SOT23 packages and are specified over the -40°C to +85°C extended temperature range. An evaluation kit is available to speed designs.
- Adjustable Voltage Reference
- Isolated DC-DC Conversion
- Low-Dropout Linear Regulators
- Network, Telecom, and Cellular Base Station Power Supplies
- Shunt Regulator
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
Circuit Guards Amplifier Outputs Against Overvoltage1/6/2011
The Quick Guide to Layout Considerations for the Lithium-Ion (Li+) Battery Simulator8/31/2010
Precision Constant-Current Sink Provides Wide, Close-to-the-Rail Compliance8/2/2010
Shunt Regulator Improves PA's Current-Limit Accuracy7/26/2006
High-IOUT LDO Regulator Has Excellent Transient Response3/23/2006
A Cheap, Tiny LDO Provides up to 2A Output Current12/2/2002
Simplified Lithium-Ion (Li+) Battery-Charger Testing3/2/2023
Transform a LED Driver from Buck to Boost for Enhanced Flexibility, Reduced BOM11/15/2016
Layout Considerations for High-Power Circuits5/16/2012
Designing Single-Switch, Resonant-Reset, Forward Converters3/20/2007
Using the MAX8515 Shunt Regulator In Output \r\nOvervoltage Sensing Applications for DC-DC Converters9/12/2003
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