19-2528; Rev 1; 2/03
KIT ATION EVALU E L B A AVAIL
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Wide-Input 0.6V Shunt Regulator...
19-2528; Rev 1; 2/03
KIT ATION EVALU E L B A AVAIL
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Wide-Input 0.6V Shunt Regulators for Isolated DC-to-DC Converters
General Description Features
o MAX8515A 0.6V ±0.5% Initial Accuracy at +25°C 0.6V ±1% Accuracy from -40°C to +85°C o MAX8515 0.6V ±1% Initial Accuracy at +25°C 0.6V ±1.8% Accuracy from -40°C to +85°C o Sinks 20mA at 0.2V to 18V o Input
Voltage Range from 1.7V to 28V o Directly Drives Optocouplers o 0.2Ω Dynamic Output Impedance o Space-Saving 5-Pin SC70 or SOT23 Packages
MAX8515A/MAX8515
The MAX8515A/MAX8515 shunt regulators simplify the design of
voltage regulation and over
voltage 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-toDC 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 DCto...