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量产
特性
- Outputs May Be Paralleled for Higher Current and Heat Spreading
- Single Resistor Sets Output Voltage
- Output Adjustable to 0V
- 50μA SET Pin Current: 1% Initial Accuracy
- Total Ionizing Dose (TID) Tolerance, per TM1019.8, MIL-STD-883 Up to:
- 200kRad (Si), per Condition A at 50Rads (Si)/sec
- 100kRad (Si), per Condition D at 10mRads (Si)/sec
- ELDRS Pass 100kRad (Si)
Radiation Performance
- Single Event Latch+up (SEL) Threshold Linear Energy Transfer (LET)
- ≥ 110MeV.cm2/mg at TCASE = 100°C
- MIL-PRF-38535 Class V Compliant
产品详情和应用
The RH3083 is a 2.8A low dropout linear regulator with a unique architecture featuring a precision current source and voltage follower which allows the output to be programmed to any voltage between zero and 18V. Multiple regulators can be paralleled to increase total output current and spread heat over a system PC board with no need for heat sinking. The pass transistor collector can be brought out independently of the circuit supply voltage to allow dropout voltage to approach the saturation limit of the pass transistor. A small 10μF capacitor on the output with an ESR of less than 0.5Ω is adequate to ensure stability. Applications with large output load transients require a larger output capacitor value to minimize output voltage change. Input circuitry ensures output safe operating area current limiting and thermal shutdown protection. The rated output current of an RH3083-based part is fixed by internal wire length/resistance. Analog Devices dice element evaluations are based on parts rated for 2.8A output current.
Applications
- High Efficiency Linear Regulators
- Constant Voltage/Current Regulators
- Programmable Current Source/Sink
- Space System Power Supplies
- Switching Power Supply Post Regulators
- Very Low Voltage Power Supplies
