LTC7151S datasheet(4/38 Pages) AD

4 / 38 page

LT7182S

Rev. 0

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ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Supply

Channel 0 Input Supply Range

EXTVCC = 0V

2.9

Channel 0 Input Supply Range with EXTVCC

3V ≤ EXTVCC ≤ 5.5V

1.5

Channel 1 Input Supply Range

PVIN0 ≥ 2.9V or EXTVCC ≥ 3V

1.5

Optional EXTVCC Input Supply Range

5.5

EXTVCC + PVIN0 + PVIN1 Quiescent Current

Both channels switching

Sleep (Pulse Skip Mode) or Shutdown

fSW = 1MHz, Forced Continuous Mode, VIN =

12V, No Load

Initialization Time (Delay from RESTORE_USER_ALL,

MFR_RESET, or Application of PVIN0 or EXTVCC, Until

TON_DELAY Timer Can Begin)

With CFG Pins Enabled (Default)

CFG Pins Ignored

Switching Regulator

VOUT Range

PVIN > 6.1V

PVIN ≤ 6.1V

0.4

5.5

0.85 • VIN

VOUT Set Point Accuracy

High-Performance Low-VOUT Mode, 0.6V ≤ VOUT

≤ 1.375V

0.4V ≤ VOUT ≤ 5.5V

–0.25

–0.5

0.25

0.5

VOUT Set-Point Resolution

VSENSE0P, VSENSE1P Input Resistance

VSENSE0N = VSENSE1N = 0V

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

300

µS

Error Amplifier Transconductance gm(MIN)

Full VOUT Range Mode, 0.4V ≤ VOUT ≤ 5.5V.

Includes Internal VOUT Feedback Divider

37.5

µS

Error Amplifier Transconductance gm Step Size

Full VOUT Range Mode, 0.4V ≤ VOUT ≤ 5.5V.

Includes Internal VOUT Feedback Divider

37.5

µS

Error Amplifier Transconductance gm(MAX)

High-Performance Low-VOUT Mode, 0.4V ≤

VOUT ≤ 1.375V, Includes Internal VOUT Feedback

Divider

1.2

Error Amplifier Transconductance gm(MIN)

High-Performance Low-VOUT Mode, 0.4V ≤

VOUT ≤ 1.375V, Includes Internal VOUT Feedback

Divider

150

µS

Error Amplifier Transconductance gm Step Size

High-Performance Low-VOUT Mode, 0.4V ≤

VOUT ≤ 1.375V, Includes Internal VOUT Feedback

Divider

150

µS

Max Programmable Internal Compensation Resistor

RITH(MAX)