LTM4637 datasheet(3/32 Pages) LINER

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LTM4633

4633f

For more information www.linear.com/LTM4633

elecTrical characTerisTics The

denotes the specifications which apply over the specified internal

operating temperature range (Note 2), otherwise specifications are at TA = 25°C. VIN = 12V, per the typical application for each regulator

channel.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN

Input DC Voltage

CNTL_PWR Powered from Separate Supply

(5V to 16V Range)

2.375

CNTL_PWR Powered Tied to VIN Supply

4.7

VOUT(RANGE)

Output Voltage Range VOUT1, VOUT2

Output Voltage Range VOUT3

0.8

1.8

5.5

VOUT(DC)

Output Voltage, Total Variation with Line

and Load, VOUT1, VOUT2, VOUT3

CIN = 22µF × 3, COUT = 100µF Ceramic × 3,

RFB = 69k, MODE/PLLIN = 0V, VIN = 4.7V to 16V,

IOUT = 0A to 10A (Note 4)

1.477

1.50

1.523

Input Specifications

VRUN

RUN1, RUN 2, RUN 3 Pin ON Threshold

VRUN Rising

1.15

1.3

1.4

VRUN(HYS)

RUN Pin Hysteresis

175

IQ(VIN)

Input Supply Bias Current Each Channel

VOUT = 1.5V, Burst Mode Operation

VOUT = 1.5V, Pulse-Skipping Mode

VOUT = 1.5V, Switching Continuous

Shutdown, RUN = 0V

0.5

µA

IS(VIN)

Input Supply Current Each Channel

VOUT = 1.5V, IOUT = 10A

1.5

Output Specifications

IOUT(DC)

Output Continuous Current Range Each

Channel

VOUT = 1.5V (Note 4)

∆VOUT(LINE)

VOUT

Line Regulation Accuracy per Channel

VOUT = 1.5V, VIN from 2.375V to 16V

IOUT = 0A, CNTL_PWR = 12V

0.015

0.02

%/V

∆VOUT(LOAD)

VOUT

Load Regulation Accuracy per Channel

VOUT = 1.5V, IOUT = 0A to 10A

(Note 4)

0.3

0.5

VOUT(AC)

Output Ripple Voltage per Channel

IOUT = 0A, COUT = 100µF Ceramic × 3,

VOUT = 1.5V

∆VOUT(START)

Turn-On Overshoot per Channel

COUT = 100µF Ceramic × 3, VOUT = 1.5V,

IOUT = 0A

tSTART

Turn-On Time per Channel

COUT = 100µF Ceramic × 3, No Load,

TK/SS = 0.01µF

VOUTLS

Peak Deviation for Dynamic Load per

Channel

Load: 0% to 50% to 0% of Full Load,

COUT = 100µF Ceramic × 3,

VOUT = 1.5V Typical Bench Data

100

tSETTLE

Settling Time for Dynamic Load Step per

Channel

Load: 0% to 50% to 0% of Full Load,

COUT = 100µF Ceramic × 3,

VOUT = 1.5V Typical Bench Data

µs

IOUT(PK)

Output Current Limit per Channel

VOUT = 1.5V

Control Specifications

VFB

Voltage at VFB Pin per Channel

IOUT = 0A, VOUT = 1.5V

0.792

0.794

0.80

0.808

0.806

IFB

Current at VFB Pin per Channel

(Note 3)

–10

–50

VOVL

Feedback Overvoltage Lockout per

Channel

0.84

0.86

0.88

ITK/SS

Track Pin Soft-Start Pull-Up Current per

Channel

TK/SS = 0V

1.1

1.5

1.9

µA

tON(MIN)

Minimum On-Time

(Note 3)

Max DC

Maximum Duty Cycle

2.375V to 2V at 10A, 5.5V to 5V at 0A (Note 6)

100

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