LP3883 datasheet(4/12 Pages) NSC

4 / 12 page

Electrical Characteristics Limits in standard typeface are for T

J = 25˚C, and limits in boldface type apply

over the full operating temperature range. Unless otherwise specified: V

IN =VO(NOM) + 1V, VBIAS = 4.5V, IL = 10 mA, CIN =

COUT = 4.7 µF, VS/D =VBIAS. (Continued)

Symbol

Parameter

Conditions

Typical

(Note 4)

MIN

(Note 5)

MAX

(Note 5)

Units

AC Parameters

PSRR (V

IN)

Ripple Rejection for V

IN Input

Voltage

IN =VOUT +1V, f = 120 Hz

IN =VOUT + 1V, f = 1 kHz

PSRR

BIAS)

Ripple Rejection for V

BIAS

Voltage

BIAS =VOUT + 3V, f = 120 Hz

BIAS =VOUT + 3V, f = 1 kHz

Output Noise Density

f = 120 Hz

µV/root−Hz

Output Noise Voltage

OUT = 1.8V

BW = 10 Hz − 100 kHz

150

µV (rms)

BW = 300 Hz − 300 kHz

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

is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications, see Electrical Characteristics. Specifications do not

apply when operating the device outside of its rated operating conditions.

Note 2: At elevated temperatures, device power dissipation must be derated based on package thermal resistance and heatsink thermal values.

θJ-A for TO-220

devices is 65˚C/W if no heatsink is used. If the TO-220 device is attached to a heatsink, a

θJ-S value of 4˚C/W can be assumed. θJ-A for TO-263 devices is

approximately 40˚C/W if soldered down to a copper plane which is at least 1.5 square inches in area. If power dissipation causes the junction temperature to exceed

specified limits, the device will go into thermal shutdown.

Note 3: The human body model is a 100 pF capacitor discharged through a 1.5k resistor into each pin.

Note 4: Typical numbers represent the most likely parametric norm for 25˚C operation.

Note 5: Limits are guaranteed through testing, statistical correlation, or design.

Note 6: If used in a dual-supply system where the regulator load is returned to a negative supply, the output pin must be diode clamped to ground.

Note 7: Output voltage line regulation is defined as the change in output voltage from nominal value resulting from a change in input voltage.

Note 8: Output voltage load regulation is defined as the change in output voltage from nominal value as the load current increases from no load to full load.

Note 9: Dropout voltage is defined as the minimum input to output differential required to maintain the output with 2% of nominal value.

Note 10: The machine model is a 220 pF capacitor discharged directly into each pin. The machine model ESD rating of pin 5 is 100V.

LP3883 数据表(PDF) 4 Page - National Semiconductor (TI)

LP3883 数据表(HTML) 4 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12

数据表下载