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MAX8515, MAX8515A

Wide-Input 0.6V Shunt Regulators for Isolated DC-DC Converters

Product Details

Key Features

Applications/Uses

Parametric specs for Isolated Power Supplies
VIN (V) (min) 1.7
VIN (V) (max) 28
Topology Flyback
Full-Bridge
Half-Bridge
Push-Pull
Single-Ended Forward
Two-Switch Forward
Application (VIN) Base Station (24V)
Industrial (24V)
Networking (48V)
Power Over Ethernet (32-58V)
Telecom (36-72V)
Universal Off-line (90-240VAC)
Feedback Linear
Opto
Oper. Temp. (°C) -40 to +85
Package/Pins SC70/5
TSOT/5
Budgetary
Price (See Notes)
0.7
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Simplified Block Diagram

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Parameters

Parametric specs for Isolated Power Supplies
VIN (V) (min) 1.7
VIN (V) (max) 28
Topology Flyback
Full-Bridge
Half-Bridge
Push-Pull
Single-Ended Forward
Two-Switch Forward
Application (VIN) Base Station (24V)
Industrial (24V)
Networking (48V)
Power Over Ethernet (32-58V)
Telecom (36-72V)
Universal Off-line (90-240VAC)
Feedback Linear
Opto
Oper. Temp. (°C) -40 to +85
Package/Pins SC70/5
TSOT/5
Budgetary
Price (See Notes)
0.7

Key Features

  • MAX8515A
    • 0.6V ±0.5% Initial Accuracy at +25°C
    • 0.6V ±1% Accuracy from -40°C to +85°C
  • MAX8515
    • 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

Applications/Uses

  • Adjustable Voltage Reference
  • Isolated DC-DC Conversion
  • Low-Dropout Linear Regulators
  • Network, Telecom, and Cellular Base Station Power Supplies
  • Shunt Regulator

Description

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.

Simplified Block Diagram

MAX8515A, MAX8515: Typical Operating Circuit MAX8515A, MAX8515: Typical Operating Circuit Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .