ADP7112 datasheet(3/47 Pages) AD

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Data Sheet

LT3046

analog.com

Rev 0

3 of 47

SPECIFICATIONS

Table 1. Electrical Characteristics

(TJ = -40°C to +125°C for the minimum and maximum values, TA = +25°C for the typical values, output capacitance

(COUT) = 4.7µF ceramic capacitor, and SET capacitance (CSET) = 4.7µF, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS/COMMENTS

MIN

TYP

MAX

UNITS

Input-Voltage Range

VIN

2.2

Minimum IN Pin

Voltage1

2.05

2.2

Output-Voltage Range

VOUT

VIN > VOUT

0.2

SET Pin Current

ISET

VIN = 2.2V, IL =

1mA, VOUT = 1.3V

TA = +25°C

99.5

100

100.5

µA

2.2V < VIN < 20V, 0.2V < VOUT < 19V,

1mA < IL < 200mA2

100

101

Fast Startup

ISET

VPGFB = 289mV, VIN = 2.8V, VSET = 1.3V

2.2

Output Offset Voltage3

VOS

VIN = 2.2V, IL =

1mA, VOUT = 1.3V

TA = +25°C

-1

2.2V < VIN < 20V, 0.2V < VOUT < 19V,

1mA < IL < 200mA2

-2

Line Regulation

∆ISET

VIN = 2.2V to 20V, IL = 1mA, VOUT =

1.3V

0.25

±10

nA/V

∆VOS

VIN = 2.2V to 20V, IL = 1mA, VOUT =

1.3V3

±20

µV/V

Load Regulation

∆ISET

IL = 1mA to 200mA, VIN = 2.2V, VOUT =

1.3V

∆VOS

IL = 1mA to 200mA, VIN = 2.2V, VOUT =

1.3V3

0.1

0.7

Change in ISET with VSET4

VSET = 1.3V to 19V, VIN = 20V, IL = 1mA

175

500

VSET = 0.2V to 0.75V, VIN = 20V, IL =

1mA

200

Change in VOS with VSET4

VSET = 1.3V to 19V, VIN = 20V, IL =

1mA3

0.06

0.6

VSET = 0.2V to 0.75V, VIN = 20V, IL =

1mA3

0.01

0.2

Error Amplifier

Switchover Point

(PNP-to-NPN Input Pair

Switchover)

VIN = 2.2V, IL = 1mA, VSET rising

957

VIN = 2.2V, IL = 1mA, VSET falling

929

Hysteresis

Dropout Voltage5

IL = 1mA and

20mA

TA = +25°C

290

370

450

IL = 100mA

TA = +25°C

295

375

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