LTM4703

3

Rev. 0

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SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN

Power Input DC Voltage

l

3

16

V

SVIN

Signal Input DC Voltage (Note 8)

l

3

16

V

VOUT(RANGE)

Output Voltage Range

VPGSET = 0.5V

l

0.3

6

V

VOUT(DC)

Output Voltage, Total Variation with

Line and Load

VSET = 1V, VIN = 3V to 16V, SVIN = 6V,

IOUT = 100mA to 12A (Note 7)

l

0.985

1

1.015

V

ISET

SET Pin Current

VIN = SVIN = 6V, VSET = 1V

99.2

100

100.8

μA

ISET_START

Fast Start-Up Set Pin Current

VIN = SVIN = 12V, VSET = 1V, VPGSET = 0V

2.2

2.7

3.2

mA

tSTART

Start-Up Time (Notes 3, 9)

VOUT = 1V, CSET = 1μF, VPGSET = 0.5V

VOUT = 1V, CSET = 4.7μF, VPGSET = 0.5V

VOUT = 1V, CSET = 1μF, RPGSET = 49.9k

VOUT = 1V, CSET = 4.7μF, RPGSET = 49.9k

25

120

1

2.5

ms

ms

ms

ms

VRUN

RUN Pin ON Threshold

VIN = SVIN = 6V, VRUN Rising

l

1.27

1.32

1.37

V

RUN Pin Hysteresis

50

mV

IRUN

RUN Pin Input Current

VIN = SVIN = 6V, VRUN = 2V

–40

40

nA

IQ_SVIN

SVIN Quiescent Current

SVIN = 12V, VRUN = 0V, Shutdown

SVIN = 12V, RT = 47k, FCM

50

40

μA

mA

VOUT_SPOTNOISE Output Noise Spectral Density (2kHz)

(Notes 3, 4, 6, 7)

SVIN = 12V, VOUT = 1V, COUT = 200µF, RSET = 10k,

CSET = 4.7µF, fSW = 2MHz

4

nV/√Hz

VOUT_RMSNOISE Output RMS Noise (10Hz to 100kHz)

(Notes 3, 4, 6, 7)

SVIN = 12V, VOUT = 1V, BW = 10Hz to 100kHz, IOUT =

0.5A, COUT = 200µF, RSET = 10k, CSET = 4.7µF, 2MHz

8

µVRMS

IOUT(DC)

Output Continuous Current

VIN = 12V, VOUT = 1V (Note 4)

12

A

ΔVOUT (LINE)/

VOUT

Output Voltage Line Regulation

VOUT = 1V, VIN = 3V to 16V, SVIN = 6V, IOUT = 100mA,

VSET = 1V

l

0.025

0.1

%/V

ΔVOUT (LOAD)/

VOUT

Output Voltage Load Regulation

VOUT = 1V, VIN = 6V, SVIN = 6V, IOUT = 100mA to 12A,

VSET = 1V

l

1.35

%

IVOSNS

VOSNS Output Current

80

160

240

nA

VOUT(AC)

Output Ripple Voltage (Note 3)

IOUT = 100mA, COUT = 400μF,

VIN = 12V, VOUT = 1V, RT = 137k

8

mV

ISHORT_CIRCUIT Output Short-Circuit

VIN = 16V, SVIN = 6V, VOUT = 1V

24

A

IOUT_PK

Output Current Limit

VIN = 16V, SVIN = 6V, VOUT = 1V

19

A

tON_MIN

Minimum On-Time

VIN = 16V, SVIN = 6V

17

ns

VPGSET

PGSET Upper Threshold

PGSET Upper Threshold Hysteresis

PGSET Lower Threshold

PGSET Lower Threshold Hysteresis

VIN = 6V, SVIN = 6V, PGSET Rising

PGSET Falling

525

455

540

7

465

7

550

475

mV

mV

mV

mV

IPGSET

PGSET Pin Current

VIN = 6V, SVIN = 6V, VPGSET = 0.5V

10

μA

IPG

PG Leakage

VIN = 12V, SVIN = 0V, VPG = 3.3V

–40

40

nA

RPG

PG Pull-Down Resistance

VPG = 0.5V

380

650

Ω

fOSC

Oscillator Frequency

RT = 392k

RT = 47k

RT = 28.7k

300

2

3

kHz

MHz

MHz

SYNC_LEVEL

SYNC Threshold

VIN = SVIN = 6V

SYNC DC and Clock Low-Level Voltage

SYNC DC and Clock High-Level Voltage

0.7

1.5

V

V

VPHMODE

PHMODE Thresholds

VIN = SVIN = 6V

180° Phase Shift

90° Phase Shift

2.7

0.7

V

V

ELECTRICAL CHARACTERISTICS The

l

denotes the specifications that apply over the specified internal

operating junction temperature range (Note 2), otherwise specifications are at TA = 25°C, VIN = 12V, per the typical application (Note 5).