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NCP4300ADR2
Dual Operational Amplifier and Voltage Reference
NCP4300A
Dual Operational Amplifier
and Voltage Reference
The NCP4300A is a monolithic integrated circuit specifically
designed to control the output current and voltage levels of switch
mode battery chargers and power supplies. This device contains a
precision 2.6 V shunt reference and two operational amplifiers.
Op−Amp 1 is designed to perform voltage control and has its
non−inverting input internally connected to the reference. Op−Amp 2
is designed for current control and has both inputs uncommitted. The
NCP4300A offers the power converter designer a control solution that
features increased precision with a corresponding reduction in system
complexity and cost. This device is available in an 8−lead surface
mount package.
Features
Operational Amplifier Low Input Offset V oltage: 0.5 mV Input Common Mode Voltage Range Includes Ground Low Supply Current: 210 μA/Op−Amp (@VCC = 5.0 V) Medium Unity Gain Bandwidth: 0.7 MHz Large Output Voltage Swing: 0 V to VCC − 1.5 V Wide Power Supply V oltage Range: 3.0 V to 35 V
Voltage Reference Fixed Output V oltage Reference: 2.60 V High Precision Over Temperature: 1.0% Wide Sink Current Range: 80 μA to 80 mA
Typical Applications Battery Charger Switch Mode Power Supply
Figure 1. Functional Block DiagramOutput 1
Inputs 1
VCC
Output 2
GND
Inputs 2
