LP2997

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SNVS295F – MAY 2004 – REVISED APRIL 2013

Electrical Characteristics

Specifications with standard typeface are for TJ = 25°C and limits in boldface type apply over the full Operating

Temperature Range (TJ = 0°C to +125°C)

(1). Unless otherwise specified, AVIN = 2.5V, PVIN = 1.8V, VDDQ = 1.8V.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

VREF

VREF Voltage

PVIN = VDDQ = 1.7V

0.837

0.860

0.887

PVIN = VDDQ = 1.8V

0.887

0.910

0.937

V

PVIN = VDDQ = 1.9V

0.936

0.959

0.986

ZVREF

VREF Output Impedance

IREF = -30 to +30 μA

2.5

k

Ω

VTT

VTT Output Voltage

IOUT = 0A

PVIN = VDDQ = 1.7V

0.822

0.856

0.887

PVIN = VDDQ = 1.8V

0.874

0.908

0.939

PVIN = VDDQ = 1.9V

0.923

0.957

0.988

V

IOUT = ±0.5A

(2)

PVIN = VDDQ = 1.7V

0.828

0.856

0.890

PVIN = VDDQ = 1.8V

0.878

0.908

0.940

PVIN = VDDQ = 1.9V

0.928

0.957

0.990

VosTT/VTT

VTT Output Voltage Offset

IOUT = 0A

-25

0

25

(VREF-VTT)

IOUT = -0.5A

-25

0

25

mV

IOUT = +0.5A

-25

0

25

IQ

Quiescent Current(3)

IOUT = 0A

(3)

320

500

µA

ZVDDQ

VDDQ Input Impedance

100

k

Ω

ISD

Quiescent Current in

SD = 0V

115

150

µA

Shutdown(3)

IQ_SD

Shutdown Leakage Current SD = 0V

2

5

µA

VIH

Minimum Shutdown High

1.9

V

Level

VIL

Maximum Shutdown Low

0.8

V

Level

ISENSE

VSENSE Input Current

13

nA

TSD

Thermal Shutdown

See(4)

165

Celsius

TSD_HYS

Thermal Shutdown

10

Celsius

Hysteresis

(1)

Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using

Statistical Quality Control (SQC) methods. The limits are used to calculate Average Outgoing Quality Level (AOQL).

(2)

VTT load regulation is tested by using a 10 ms current pulse and measuring VTT.

(3)

Quiescent current defined as the current flow into AVIN.

(4)

The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(MAX), the junction to ambient thermal

resistance,

θJA, and the ambient temperature, TA. Exceeding the maximum allowable power dissipation will cause excessive die

temperature and the regulator will go into thermal shutdown.

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