Wide-Input 0.6V Shunt Regulators for Isolated DC-DC Converters
DescriptionThe 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.
- 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
- Adjustable Voltage Reference
- Isolated DC-DC Conversion
- Low-Dropout Linear Regulators
- Network, Telecom, and Cellular Base Station Power Supplies
- Shunt Regulator
|0.5||-40 to +85|
MAX8515EVKIT: Evaluation Kit for the MAX8515, MAX8515A
Technical DocumentsApp Note 4326 Reduce Standby Power Drains with Ultra-Low-Current, Pulse-Frequency-Modulated (PFM) DC-DC Converters
|Device||Fab Process||Technology||Sample size||Rejects||FIT at 25°C||FIT at 55°C||Material Composition|