Voltage References | NCS1002A

Constant Voltage / Constant Current SecondarySide Controller

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The NCS1002A is a performance upgrade from the NCS1002 focused on reducing power consumption in applications that require more efficient operation. It is a highly integrated solution for Switching Mode Power Supply (SMPS) applications requiring a dual control loop to perform Constant Voltage (CV) and Constant Current (CC) regulation. The NCS1002A integrates a 2.5 V voltage reference and two precision op amps. The voltage reference, along with Op Amp 1, is the core of the voltage control-loop. Op Amp 2 is an independent, uncommitted amplifier specifically designed for the current control. Key external components needed to complete the two control loops are: (a) A resistor divider that senses the output of the power supply (battery charger) and fixes the voltage regulation set point at the specified value. (b) A sense resistor that feeds the current sensing circuit with a voltage proportional to the DC output current. This resistor determines the current regulation set point and must be adequately rated in terms of power dissipation. The NCS1002A comes in a small 8-pin SOIC package and is ideal for space-shrunk applications such as battery chargers.

  • Switch Mode Power Supplies

  • Battery Chargers

  • Low Input Offset Voltage: 0.5 mV, Typ
  • Input Common-Mode Range includes Ground
  • Low Quiescent Current: 75 µA per Op Amp at VCC = 5 V
  • Large Output Voltage Swing
  • Wide Power Supply Range: 3 V to 36 V
  • High ESD Protection: 2 kV

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NCS1002ADR2G

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CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

Y

Adjustable

2.5

0.4

0.4

0.04

36

-40

105

$0.2467

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Reliability Data

Die Related Summary Data

Device: NCS1002ADR2G

Equivalent to wafer fab process: BP STD LINEAR

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Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

BP STD LINEAR

10

12120914040

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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