PB51 PB51A RoHS Power Booster Amplifier COMPLIANT FEATURES Wide Supply Range 15V to 150V High Output Current 1.5A Continuous (PB51), 2.0A Continuous (PB51A) Voltage and Current Gain High Slew 50V/s Minimum (PB51) 75V/s Minimum (PB51A) Programmable Output Current Limit High Power Bandwidth 320 kHz Minimum Low Quiescent Current 12mA Typical Evaluation Kit EK29 APPLICATIONS High Voltage Instrumentation Electrostatic Transducers & Deflection Programmable Power Supplies up to 280V P-P DESCRIPTION The PB51 is a high voltage, high current amplifier designed to provide voltage and current gain for a small signal, general purpose op amp. Including the power booster within the feedback loop of the driver amplifier results in a composite amplifier with the accuracy of the driver and the extended output voltage range and current capability of the booster. The PB51 can also be used without a driver in some applications, requiring only an external current limit resistor to function properly. The output stage utilizes complementary MOSFETs, providing symmetrical output impedance and elimi- nating second breakdown limitations imposed by Bipolar Transistors. Internal feedback and gainset resistors are provided for a pin-strapable gain of 3. Additional gain can be achieved with a single external resistor. Compensation is not required for most driver/gain configurations, but can be accomplished with a single external capacitor. Enormous flexibility is provided through the choice of driver amplifier, current limit, sup- ply voltage, voltage gain, and compensation. This hybrid circuit utilizes a beryllia (BeO) substrate, thick film resistors, ceramic capacitors and semicon- ductor chips to maximize reliability, minimize size and give top performance. Ultrasonically bonded aluminum wires provide reliable interconnections at all operating temperatures. The 12-pin Power SIP is electrically isolated. Apex Microtechnology Inc. Jan 2020 www.apexanalog.com All rights reserved PB51U Rev MPB51 PB51A TYPICAL CONNECTION Figure 1: Typical Connection 2 PB51U Rev M