LP3982IMMX-1.8 datasheet(2/23 Pages) TI

Part #	LP3982IMMX-1.8

Description	LP3982 Micropower, Ultra Low-Dropout, Low-Noise, 300 mA CMOS Regulator

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Manufacturer	TI [Texas Instruments]

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PD =

TJ(MAX) - TA

6JA

(4)

Maximum Power dissipation for the device is calculated using the following equations:

where TJ(MAX) is the maximum

LP3982

SNVS185D – FEBRUARY 2002 – REVISED APRIL 2013

www.ti.com

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

ABSOLUTE MAXIMUM RATINGS

(1) (2) (3)

VIN, VOUT, VSHDN, VSET, VCC, VFAULT

−0.3V to 6.5V

Fault Sink Current

20mA

Power Dissipation

See(4)

Storage Temperature Range

−65°C to 160°C

Junction Temperature (TJ)

150°C

Lead Temperature (10 sec.)

260°C

Human Body Model(5)

2kV

ESD Rating

Machine Model

200V

8-Pin VSSOP

223°C/W

Thermal Resistance (

θJA)

8-Pin WSON

See(4)

(1)

Absolute Maximum ratings indicate limits beyond which damage may occur. Electrical specifications do not apply when operating the

device outside of its rated operating conditions.

(2)

All voltages are with respect to the potential at the ground pin.

(3)

If Military/Aerospace specified devices are required, please contact Texas Instruments Sales Office/Distributors for availability and

specifications.

junction temperature, TA is the ambient temperature, and θJA is the junction-to-ambient thermal resistance. For example, for the VSSOP-

8 package

θJA = 223°C/W, TJ(MAX) = 150°C and using TA = 25°C; the maximum power dissipation is found to be 561 mW. The derating

factor (

−1/θJA) = −4.5 mW/°C, thus below 25°C the power dissipation figure can be increased by 4.5 mW per degree, and similarity

decreased by this factor for temperatures above 25°C. The value of the

θJA for the WSON package is specifically dependent on the PCB

trace area, trace material, and the number of layers and thermal vias. For improved thermal resistance and power dissipation for the

WSON package, refer to Application Note AN-1187 SNOA401.

(5)

Human body model: 1.5 k

Ω in series with 100 pF.

RECOMMENDED OPERATING CONDITIONS

(1) (2)

Temperature Range

−40°C to 85°C

Supply Voltage

2.5V to 6.0V

(1)

Absolute Maximum ratings indicate limits beyond which damage may occur. Electrical specifications do not apply when operating the

device outside of its rated operating conditions.

(2)

All voltages are with respect to the potential at the ground pin.

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, all limits specified for VIN = VO +0.5V

(1), V

SHDN = VIN, CIN = COUT = 2.2μF, CCC = 33nF, TJ = 25°C.

Boldface limits apply for the operating temperature extremes:

−40°C and 85°C.

Symbol

Parameter

Conditions

Min(2)

Typ(3)

Max(2)

Units

VIN

Input Voltage

2.5

6.0

V

ΔVO

Output Voltage Tolerance

100

μA ≤ IOUT ≤ 300 mA

−2

+2

% of VOUT

VIN = VO +0.5V

(1)

−3

+3

(NOM)

SET = OUT for the Adjust Versions

VO

Output Adjust Range

Adjust Version Only

1.25

6

V

IO

Maximum Output Current

Average DC Current Rating

300

mA

ILIMIT

Output Current Limit

330

770

mA

IQ

Supply Current

IOUT = 0mA

90

270

μA

IOUT = 300 mA

225

Shutdown Supply Current

VO = 0V, SHDN = GND

0.001

1

μA

(1)

Condition does not apply to input voltages below 2.5V since this is the minimum input operating voltage.

(2)

All limits are verified by testing or statistical analysis.

(3)

Typical Values represent the most likely parametric norm.

2

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