LTC1709-7 datasheet(2/28 Pages) LINER

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LTC1709-7

ORDER PART

NUMBER

LTC1709EG-7

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

TJMAX = 125°C, θJA = 85°C/W

Consult factory for Industrial and Military grade parts.

ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VBIAS = 5V, VRUN/SS = 5V unless otherwise noted.

(Note 1)

Input Supply Voltage (VIN).........................36V to –0.3V

Topside Driver Voltages (BOOST1,2) .........42V to – 0.3V

Switch Voltage (SW1, 2) .............................36V to – 5 V

SENSE1+, SENSE2 +, SENSE1–,

SENSE2 – Voltages ................... (1.1)INTVCC to –0.3V

EAIN, VOS+, VOS–, EXTVCC, INTVCC, RUN/SS,

VBIAS, ATTENIN, ATTENOUT, PGOOD,

VID0–VID4, Voltages ...............................7V to – 0.3V

Boosted Driver Voltage (BOOST-SW) .......... 7V to – 0.3V

PLLFLTR, PLLIN, VDIFFOUT,

FCB Voltages ................................... INTVCC to –0.3V

ITH Voltage ................................................2.7V to –0.3V

Peak Output Current <1

µs(TGL1,2, BG1,2)................ 3A

INTVCC RMS Output Current ................................ 50mA

Operating Ambient Temperature Range

(Note 2) .............................................. – 40

°C to 85°C

Junction Temperature (Note 3) ............................. 125

°C

Storage Temperature Range ................. – 65

°C to 150°C

Lead Temperature (Soldering, 10 sec).................. 300

°C

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Main Control Loop

VEAIN

Regulated Feedback Voltage

ITH Voltage = 1.2V (Note 4)

0.792

0.800

0.808

VSENSEMAX

Maximum Current Sense Threshold

VSENSE– = 5V

IINEAIN

Feedback Current

(Note 4)

– 5

– 50

VLOADREG

Output Voltage Load Regulation

(Note 4)

Measured in Servo Loop,

∆ITH Voltage: 1.2V to 0.7V q

0.1

0.5

Measured in Servo Loop,

∆ITH Voltage: 1.2V to 2V

– 0.1

– 0.5

VREFLNREG

Reference Voltage Line Regulation

VIN = 3.6V to 30V (Note 4)

0.002

0.02

%/V

VFCB

Forced Continuous Threshold

0.76

0.8

0.84

IFCB

Forced Continuous Current

– 0.17

– 1

µA

VBINHIBIT

Burst Inhibit (Constant Frequency)

Measured at FCB pin

4.3

4.8

Threshold

VOVL

Output Overvoltage Threshold

Measured at VEAIN

0.84

0.86

0.88

UVLO

Undervoltage Lockout

VIN Ramping Down

3.5

Transconductance Amplifier gm

ITH = 1.2V, Sink/Source 5µA (Note 4)

mmho

gmOL

Transconductance Amplifier Gain

ITH = 1.2V, (gm × ZL; No Ext Load) (Note 4)

1.5

V/mV

TOP VIEW

G PACKAGE

36-LEAD PLASTIC SSOP

RUNN/SS

SENSE1+

SENSE1–

EAIN

PLLFLTR

PLLIN

FCB

ITH

SGND

VDIFFOUT

VOS

–

VOS

SENSE2–

SENSE2+

ATTENOUT

ATTENIN

VID0

VID1

TG1

SW1

BOOST1

VIN

BG1

EXTVCC

INTVCC

PGND

BG2

BOOST2

SW2

TG2

PGOOD

VBIAS

VID4

VID3

VID2

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