LTC1473IGN datasheet(2/16 Pages) LINER

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LTC1473

ABSOLUTE MAXIMUM RATINGS

DCIN, BAT1, BAT2 Supply Voltage .............. – 0.3 to 32V

SENSE +, SENSE –, V + .................................. – 0.3 to 32V

GA1, GB1, GA2, GB2 ................................... – 0.3 to 42V

SAB1, SAB2 ................................................. – 0.3 to 32V

SW, VGG ...................................................... – 0.3 to 42V

IN1, IN2, DIODE ........................................ – 0.3V to 7.5V

Junction Temperature (Note 2) ............................. 125

°C

Operating Temperature Range

Commercial ............................................. 0

°C to 70°C

Industrial ........................................... – 40

°C to 85°C

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

°C to 150°C

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

°C

ORDER PART

NUMBER

PACKAGE/ORDER INFORMATION

LTC1473CGN

LTC1473IGN

TOP VIEW

GN PACKAGE

16-LEAD NARROW PLASTIC SSOP

IN1

IN2

DIODE

TIMER

V+

VGG

GND

GA1

SAB1

GB1

SENSE+

SENSE–

GA2

SAB2

GB2

TJMAX = 125°C, θJA = 150°C/ W

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

V+

Supply Operating Range

4.75

Supply Current

VIN1 = VDIODE = 5V, VIN2 = 0V, VSENSE+ = VSENSE– = 20V

100

200

µA

VGS

VGS Gate Supply Voltage

VGS = VGG – V+

7.5

8.5

9.5

V +UVLO

V + Undervoltage Lockout Threshold

V + Ramping Down

2.7

3.1

3.5

V +UVLOHYS

V + Undervoltage Lockout Hysteresis

0.75

1.25

VHIDIGIN

Digital Input Logic High

1.6

VLODIGIN

Digital Input Logic Low

1.5

0.8

IIN

Input Current

VIN1 = VIN2 = VDIODE = 5V

±1

µA

VGS(ON)

Gate-to-Source ON Voltage

IGA1 = IGA2 = IGB1 = IGB2 = – 1µA, VSAB1 = VSAB2 = 20V

5.0

5.7

7.0

VGS(OFF)

Gate-to-Source OFF Voltage

IGA1 = IGA2 = IGB1 = IGB2 = 100µA, VSAB1 = VSAB2 = 20V

00.4

IBSENSE

SENSE + Input Bias Current

VSENSE

+ = VSENSE– = 20V

24.5

6.5

µA

VSENSE+ = VSENSE– = 0V (Note 3)

– 300

– 160

– 100

µA

IBSENSE–

SENSE – Input Bias Current

VSENSE+ = VSENSE– = 20V

24.5

6.5

µA

VSENSE+ = VSENSE– = 0V (Note 3)

– 300

– 160

– 100

µA

VSENSE

Inrush Current Limit Sense Voltage

VSENSE– = 20V (VSENSE+ – VSENSE–)

0.15

0.20

0.25

VSENSE– = 0V (VSENSE+ – VSENSE–)

0.10

0.20

0.30

IPDSAB

SAB1, SAB2 Pull-Down Current

VIN1 = VIN2 = VDIODE = 0.8V

µA

VIN1 = VIN2 = 0.8V, VDIODE = 2V

200

300

µA

ITIMER

Timer Source Current

VIN1 = 0.8V, VIN2 = VDIODE = 2V, VTIMER = 0V,

35.5

µA

VSENSE+ – VSENSE– = 300mV

VTIMER

Timer Latch Threshold Voltage

VIN1 = 0.8V, VIN2 = VDIODE = 2V

1.1

1.2

1.3

tON

Gate Drive Rise Time

CGS = 1000pF, VSAB1 = VSAB2 = 0V (Note 4)

µs

tOFF

Gate Drive Fall Time

CGS = 1000pF, VSAB1 = VSAB2 = 20V (Note 4)

µs

tD1

Gate Drive Turn-On Delay

CGS = 1000pF, VSAB1 = VSAB2 = 0V (Note 4)

µs

tD2

Gate Drive Turn-Off Delay

CGS = 1000pF, VSAB1 = VSAB2 = 20V (Note 4)

µs

fOVGG

VGG Regulator Operating Frequency

kHz

ELECTRICAL CHARACTERISTICS

Test circuit, V + = 20V, unless otherwise specified.

Consult factory for Military grade parts.

(Note 1)

The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.

GN PART MARKING

1473

1473I

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