LT7184S datasheet(6/52 Pages) AD

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Data Sheet

LT7184S

analog.com

Rev. 0

6 of 52

SPECIFICATIONS

Table 3. Electrical Characteristics

(TA = 25°C for typical values. For minimum and maximum values, specifications apply over the full operating

temperature range unless otherwise noted.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

INPUT SUPPLY

Channel 0 Input Supply

Range

EXTVCC < 3.0

2.9

Channel 0 Input Supply

Range with EXTVCC

3V ≤ EXTVCC ≤ 5.5V

1.5

Channel 1 Input Supply

Range

PVIN0 ≥ 2.9V or 3V ≤ EXTVCC ≤ 5.5V

1.5

Optional EXTVCC Input

Supply Range

5.5

EXTVCC + PVIN0 + PVIN1

Quiescent Current, both

Channels Switching

EXTVCC = 4V, fSW = 1MHz,

PVIN0 = PVIN1 = 12V, No Load, TA = 25°C

EXTVCC + PVIN0 Current,

Shutdown

Shutdown, TA = 25°C

7.4

Initialization Time1

With CFG Pins Enabled (Default),

TA = 25°C

CFG Pins Ignored, TA = 25°C

SWITCHING REGULATORS

VOUT Range

PVIN ≥ 6.5V

0.4

5.5

PVIN < 6.5V

0.4

0.85 x

PVIN

VOUT Set-Point Accuracy

High-Performance, Low VOUT Mode,

0.6V ≤ VOUT ≤ 1.375V

-0.25

0.25

0.4V ≤ VOUT ≤ 5.5V

-0.5

0.5

VOUT Set-Point Resolution

VSENSE0P, VSENSE1P Input

Resistance

Switcher (SWR0 or SWR1) Enabled,

or 250Ω Pull-Down Disabled, TA = 25°C

kΩ

Error Amplifier

Transconductance

Programming Resolution

bits

Error Amplifier

Transconductance

(gm(MAX))

Full VOUT Range Mode,

0.4V ≤ VOUT ≤ 5.5V,

Includes Internal VOUT Feedback Divider

1240

μS

Error Amplifier

Transconductance

(gm(MIN))

Full VOUT Range Mode,

0.4V ≤ VOUT ≤ 5.5V,

Includes Internal VOUT Feedback Divider

155

μS

Error Amplifier

Transconductance

(gm step size)

Full VOUT Range Mode,

0.4V ≤ VOUT ≤ 5.5V,

Includes Internal VOUT Feedback Divider

155

μS

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