Unless otherwise noted, V

and V

= 25˚C. Limits appearing in boldface type apply over the full junction temperature range for operation, −40 to +125˚C.

Symbol

Parameter

Conditions

Typ

Limit

Units

Min

Max

PSRR

Power Supply Rejection Ratio

(Note 11)

f = 1kHz, I

OUT

= 1mA to

150mA

C

LDO1

58

dB

LDO2

70

f = 20kHz, I

OUT

= 1mA to

150mA

C

LDO1

45

LDO2

60

e

n

Output noise Voltage (Note 11)

BW = 10Hz to

100kHz

C

V

36

µV

RMS

V

75

T

SHUTDOWN

Thermal Shutdown

Temperature

160

˚C

Hysteresis

20

Enable Control Characteristics

I

EN

Input Current at V

V

0.005

0.1

µA

V

2

5

V

IL

Low Input Threshold

0.4

V

V

IH

High Input Threshold

0.95

V

Timing Characteristics

T

ON

Turn On Time (Note 11)

To 95% Level

C

300

µs

Transient

Response

Line Transient Response |

δV

(Note 11)

T

δV

20

mV

(pk - pk)

Load Transient Response

|

δV

(Note 11)

T

1µs

LDO 1

I

150mA

175

LDO 2

I

300mA

150

Note 1: Absolute Maximum Ratings are limits beyond which damage can occur. Operating Ratings are conditions under which operation of the device is

guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical

Characteristics tables.

Note 2: All Voltages are with respect to the potential at the GND pin.

Note 3: For detailed soldering specifications and information, please refer to National Semiconductor Application Note AN-1187, Leadless Leadframe Package.

Note 4: Internal thermal shutdown circuitry protects the device from permanent damage.

Note 5: The human body model is 100pF discharged through a 1.5k

Ω resistor into each pin. The machine model is a 200pF capacitor discharged directly into each

pin.

Note 7: Junction to ambient thermal resistance is dependant on the application and board layout. In applications where high maximum power dissipation is possible,

special care must be paid to thermal dissipation issues in board design.

Note 8: Min Max limits are guaranteed by design, test or statistical analysis. Typical numbers are not guaranteed, but do represent the most likely norm.

Note 10: Dropout voltage is voltage difference between input and output at which the output voltage drops to 100mV below its nominal value. This parameter only

for output voltages above 2.0V

Note 11: This electrical specification is guaranteed by design.

www.national.com

6