LP2998, LP2998-Q1

SNVS521K – DECEMBER 2007 – REVISED AUGUST 2014

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7.6 Electrical Characteristics

Typical limits tested at TJ = 25°C. Minimum and maximum limits apply over the full operating junction temperature range (TJ =

–40°C to 125°C).

(1) Unless otherwise specified, AVIN = PVIN = 2.5 V, VDDQ = 2.5 V.(2)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIN = VDDQ = 2.3 V

1.135

1.158

1.185

VREF voltage (DDR I)

VIN = VDDQ = 2.5 V

1.235

1.258

1.285

VIN = VDDQ = 2.7 V

1.335

1.358

1.385

PVIN = VDDQ = 1.7 V

0.837

0.860

0.887

VREF

VREF voltage (DDR II)

PVIN = VDDQ = 1.8 V

0.887

0.910

0.937

V

PVIN = VDDQ = 1.9 V

0.936

0.959

0.986

PVIN = VDDQ = 1.35V

0.669

0.684

0.699

VREF Voltage (DDR III)

PVIN = VDDQ = 1.5V

0.743

0.758

0.773

PVIN = VDDQ = 1.6V

0.793

0.808

0.823

ZVREF

VREF Output Impedance

IREF = –30 to 30 µA

2.5

k

Ω

IOUT = 0 A

VIN = VDDQ = 2.3 V

1.120

1.159

1.190

VIN = VDDQ = 2.5 V

1.210

1.259

1.290

VIN = VDDQ = 2.7 V

1.320

1.359

1.390

VTT

VTT Output Voltage (DDR I)

(3)

V

IOUT = ±1.5 A

VIN = VDDQ = 2.3 V

1.125

1.159

1.190

VIN = VDDQ = 2.5 V

1.225

1.259

1.290

VIN = VDDQ = 2.7 V

1.325

1.359

1.390

IOUT = 0 A, AVIN = 2.5 V

PVIN = VDDQ = 1.7 V

0.822

0.856

0.887

PVIN = VDDQ = 1.8 V

0.874

0.908

0.939

PVIN = VDDQ = 1.9 V

0.923

0.957

0.988

VTT Output Voltage (DDR II)

(3)

V

IOUT = ±0.5A, AVIN = 2.5 V

PVIN = VDDQ = 1.7 V

0.820

0.856

0.890

PVIN = VDDQ = 1.8 V

0.870

0.908

0.940

PVIN = VDDQ = 1.9 V

0.920

0.957

0.990

IOUT = 0A, AVIN = 2.5 V

PVIN = VDDQ = 1.35V

0.656

0.677

0.698

PVIN = VDDQ = 1.5 V

0.731

0.752

0.773

PVIN = VDDQ = 1.6 V

0.781

0.802

0.823

IOUT = 0.2 A, AVIN = 2.5V

0.667

0.688

0.710

PVIN = VDDQ = 1.35V

IOUT = -0.2A, AVIN = 2.5V

0.641

0.673

0.694

PVIN = VDDQ = 1.35V

VTT Output Voltage (DDR III)

(3)

V

IOUT = 0.4 A, AVIN = 2.5 V

0.740

0.763

0.786

PVIN = VDDQ = 1.5 V

IOUT = –0.4 A, AVIN = 2.5 V

0.731

0.752

0.773

PVIN = VDDQ = 1.5 V

IOUT = 0.5 A, AVIN = 2.5 V

0.790

0.813

0.836

PVIN = VDDQ = 1.6 V

IOUT = –0.5 A, AVIN = 2.5 V

0.781

0.802

0.823

PVIN = VDDQ = 1.6 V

(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 Texas Instruments' Average Outgoing Quality Level (AOQL).

(2)

VIN is defined as VIN = AVIN = PVIN.

(3)

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

6

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