MAX9959 25V Span, 800mA Device Power Supply (DPS)

The MAX9959 provides all the key features of a device power supply (DPS) common to automatic test equipment (ATE) and other instrumentation. Its small size, high level of integration, and superb flexibility make the MAX9959 ideal and economical for multisite systems requiring many device power supplies.

The MAX9959 has multiple input control voltages that allow independent setting of both the output voltage, and the maximum and minimum (smallest positive or most negative) voltage or current. The MAX9959 is a voltage source when the load current is between the two programmed limits, and transitions gracefully into a precision current source/sink if a programmed current limit is reached. The output features two independently adjustable voltage clamps that limit both the negative and positive output voltage values between levels externally provided.

The MAX9959 can source voltages spanning 25V and can source currents as high as ±800mA. The DPS can support an external buffer for sourcing and sinking higher currents. Multiple MAX9959s can be configured in parallel to load-share, allowing higher output currents with greater flexibility.

The MAX9959 features operation over a wide range of loading conditions. Programmability allows optimizing of settling time, over-/undershoot, and stability. Built-in, configurable, range-change glitch-control circuits minimize output glitches during range transitions.

The MAX9959 offers load regulation of 1mV at 800mA load.

The MAX9959D features an internal 300kΩ sense resistor (R_FS), between RCOMF and SENSE. The MAX9959F does not include this sense resistor. Both devices are available in the 100-pin TQFP package with an exposed pad on the top for heat removal.

Key Features

25V Span Output Voltage
Programmable Current and Voltage Compliance
Programmable Current Ranges
±200µA
±2mA
±20mA
±800mA
Load Regulation of 1mV at 800mA
External Buffer Support for Higher Currents
Parallel Multiple Devices for Higher Currents
Programmable Gain Allows a Wide Range of DACs
Device-Under-Test (DUT) Ground Sense
Programmable Compensation for Wide Range of Loads
Integrated Go/No-Go Comparators
IDDQ Test Mode
Range-Change Glitch Control
Compact (14mm x 14mm) Package
3-Wire Compatible Serial Interface
Thermal Warning Flag and Thermal Shutdown

Applications/Uses

 Industrial Systems
 Memory Testers
 Structural Testers
 System-on-a-Chip Testers
 VLSI Testers
 
Typical Operating Circuit