LP4951C datasheet(4/14 Pages) NSC

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Electrical Characteristics (Continued)

Note 9: May exceed input supply voltage.

Note 10: When used in dual-supply systems where the output terminal sees loads returned to a negative supply, the output voltage should be diode-clamped to

ground.

Note 11: VSHUTDOWN ≥ 2V, VIN ≤ 30V, VOUT = 0, Feedback pin tied to VTAP.

Note 12: Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.

Note 13: Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation

effects. Specifications are for a 50 mA load pulse at VIN = 30V (1.25W pulse) for T = 10ms.

Note 14: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are

covered under the specification for thermal regulation.

Note 15: Line regulation for the LP4951C is tested at 150˚C for IL = 1 mA. For IL = 100µA and TJ = 125˚C, line regulation is guaranteed by design to 0.2%. See

Typical Performance Characteristics for line regulation versus temperature and load current.

Connection Diagrams

TO-92 Plastic Package (Z)

Surface-Mount Package (M)

20052802

Bottom View

20052826

Top View

Ordering Information

Package

Output Voltage

Temperature

5.0V

TO-92 (Z)

LP4950CZ-5.0

−40˚C < T

J < 125˚C

M (M08A)

LP4951CM

−40˚C < T

J < 125˚C

LP4951C 数据表(PDF) 4 Page - National Semiconductor (TI)

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