LM2852 datasheet(5/14 Pages) NSC

номер детали	LM2852

подробное описание детали	2A 500/1500kHz Synchronous SIMPLE SWITCHER짰 Buck Regulator

PDF	14 Pages

Scroll/Zoom	100%

производитель	NSC [National Semiconductor (TI)]

домашняя страница	http://www.national.com

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5 / 14 page

Electrical Characteristics AVIN = PVIN = 5V unless otherwise indicated under the Conditions column.

Limits in standard type are for T

J = 25˚C only; limits in boldface type apply over the junction temperature (TJ) range of -40˚C

to +125˚C. Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values

represent the most likely parametric norm at T

J = 25˚C, and are provided for reference purposes only. (Continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

range

Duty Cycle Range

100

ENABLE CONTROL

EN Pin Minimum

High Input

%of

AVIN

EN Pin Maximum

Low Input

%of

AVIN

EN Pin Pullup

Current

EN = 0V

1.2

µA

THERMAL CONTROLS

J for Thermal

Shutdown

165

˚C

SD-HYS

Hysteresis for

Thermal Shutdown

˚C

Note 1: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating Range indicates conditions for which the device is

intended to be functional, but does not guarantee specfic performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.

Note 2: Human body model: 1.5k

Ω in series with 100pF. SW and PVIN pins are derated to 1.5kV

Note 3: VOUT measured in a non-switching, closed-loop configuration at the SNS pin.

Note 4: The enable pin is internally pulled up, so the LM2852 is automatically enabled unless an external enable voltage is applied.

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