Dual Op AMP and Voltage Reference HM4310, Designed to Regulate the Output Current and Voltage Levels of Switching Battery Chargers and Power Supplies

PublishTime： 2023-11-11 Article Source：HONGMAO SEMICON

HONGMAO SEMICON HM4310 Dual op AMP and voltage reference is a monolithic IC specifically designed to regulate the output current and voltage levels of switching battery chargers and power supplies.

The device contains two Op Amps and a 2.5V precision shunt voltage reference. Op Amp 1 is designed for voltage control with its non-inverting input internally connected to the output of the shunt regulator. Op Amp 2 is for current control with both inputs uncommitted. The IC offers the power converter designer a control solution that features increased precision with a corresponding reduction in system complexity and cost.

FEATURES
● Op Amp
Input Offset Voltage: 0.5mV
Supply Current: 75μA per Op Amp at 5.0V Supply Voltage
Unity Gain Bandwidth: 1MHz
Output Voltage Swing: 0 to VCC~1.5V
Power Supply Range: 3 to 36V

● Voltage Reference
Fixed Output Voltage Reference: 2.5V
Reference Voltage Tolerance HM4310±0.4%,
Sink Current Capability: 0.05 to 80mA
Typical Output Impedance: 0.2Ω

APPLICATIONS
Battery Charger
Switching Power Supply

ABSOLUTE MAXIMUM RATINGS

RECOMMENDED OPERATING CONDITIONS

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