LP3999

SNVS207E – JUNE 2003 – REVISED MAY 2013

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Operating Ratings

(1)

Input Voltage (VIN)

2.5 to 6.0V

Enable Input Voltage

0 to 6.0V

Junction Temperature

−40 to +125°C

Ambient Temperature Range(2)

-40 to 85°C

(1)

Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which

operation of the device is ensured. Operating Ratings do not imply ensured performance limits. For ensured performance limits and

associated test conditions, see the Electrical Characteristics tables.

(2)

In applications where high power dissipation and/or poor thermal resistance is present, the maximum ambient temperature may have to

be derated. Maximum ambient temperature (TA(max)) is dependant on the maximum operating junction temperature (TJ(max-op)), the

maximum power dissipation (PD(max)), and the junction to ambient thermal resistance in the application (θJA). This relationship is given

by:

TA(max) = TJ(max-op) − (PD(max) × θJA).

Thermal Properties

(1)

Junction to Ambient Thermal Resistance

θJA (DSBGA pkg.)

255°C/W

(1)

Junction to ambient thermal resistance is highly dependant on the application and board layout. In applications where high thermal

dissipation is possible, special care must be paid to thermal issues in the board design.

Electrical Characteristics

Unless otherwise noted, VEN = 1.5, VIN = VOUT(NOM) + 1.0V, CIN = 1 µF, IOUT = 1 mA, COUT = 1 µF, CBP = 0.01 µF. Typical

values and limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface type apply over the full

temperature range for operation,

−40 to +125°C.

(1) (2)

Limit

Symbol

Parameter

Conditions

Typical

Units

Min

Max

VIN

Input Voltage

2.5

6.0

V

DEVICE OUTPUT: 1.5

≤ VOUT < 1.8V

ΔVOUT

Output Voltage Tolerance

IOUT = 1 mA

−50

50

mV

-75

75

Line Regulation Error

VIN = (VOUT(NOM)+1.0V) to 6.0V,

−3.5

3.5

mV/V

IOUT = 1 mA

Load Regulation Error

IOUT = 1 mA to 150 mA

10

75

µV/mA

PSRR

Power Supply Rejection Ratio(3)

f = 1 kHz, IOUT = 1 mA

58

dB

f = 10 kHz, IOUT = 1 mA

58

DEVICE OUTPUT: 1.8

≤ VOUT < 2.5V

ΔVOUT

Output Voltage Tolerance

IOUT = 1 mA

-50

50

mV

−75

75

Line Regulation Error

VIN = (VOUT(NOM)+1.0V) to 6.0V,

−2.5

2.5

mV/V

IOUT = 1 mA

Load Regulation Error

IOUT = 1 mA to 150 mA

10

75

µV/mA

PSRR

Power Supply Rejection Ratio(3)

f = 1 kHz, IOUT = 1 mA

60

dB

f = 10 kHz, IOUT = 1 mA

60

DEVICE OUTPUT: 2.5

≤ VOUT ≤ 3.3V

ΔVOUT

Output Voltage Tolerance

IOUT = 1 mA

-2

2

% of

VOUT(NOM)

−3

3

Line Regulation Error

VIN = (VOUT(NOM)+1.0V) to 6.0V,

−0.1

0.1

%/V

IOUT = 1 mA

Load Regulation Error

IOUT = 1 mA to 150 mA

0.0004

0.002

%/mA

(1)

All limits are ensured. All electrical characteristics having room-temperature limits are tested during production at TJ = 25°C or correlated

using Statistical Quality Control methods. Operation over the temperature specification is ensured by correlating the electrical

characteristics to process and temperature variations and applying statistical process control.

(2)

VOUT(NOM) is the stated output voltage option for the device.

(3)

This electrical specification is ensured by design.

4

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