LTC1473L_15 datasheet(2/16 Pages) LINER

Part #	LTC1473L

Description	Dual Low Voltage PowerPath Switch Driver

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC1473L

2

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

ELECTRICAL CHARACTERISTICS

ORDER PART

NUMBER

LTC1473LCGN

TJMAX = 125°C, θJA = 150°C/ W

Consult factory for Military and Industrial grade parts.

SENSE +, SENSE –, V + .................................. – 0.3 to 10V

GA1, GB1, GA2, GB2 ................................... – 0.3 to 20V

SAB1, SAB2 ................................................. – 0.3 to 10V

SW, VGG ...................................................... – 0.3 to 20V

IN1, IN2, DIODE ...........................................– 0.3V to 7V

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

°C

Operating Temperature Range ..................... 0

°C to 70°C

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

°C to 150°C

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

°C

GN PART MARKING

1473L

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

V+

Supply Operating Range

2.8

9

V

IS

Supply Current

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

q

100

200

µA

VGS

VGS Gate Supply Voltage

VGS = VGG – V+, 2.8V ≤ V+ ≤ 10V (Note 3)

q

7.5

8.5

9.5

V

V +UVLO

V + Undervoltage Lockout Threshold

V + Ramping Down

q

2.3

2.5

2.8

V

V +UVLOHYS

V + Undervoltage Lockout Hysteresis

70

mV

VHIDIGIN

Digital Input Logic High

(Note 4)

q

2

0.9

V

VLODIGIN

Digital Input Logic Low

(Note 4)

q

0.6

0.4

V

IIN

Input Current

VIN1 = VIN2 = VDIODE = 5V

±1

µA

VGS(ON)

Gate-to-Source ON Voltage

IGA1 = IGA2 = IGB1 = IGB2 = – 1µA, VSAB1 = VSAB2 = 5V

q

4.5

5.6

7.0

V

VGS(OFF)

Gate-to-Source OFF Voltage

IGA1 = IGA2 = IGB1 = IGB2 = 100µA, VSAB1 = VSAB2 = 5V

q

0

0.4

V

IBSENSE

+

SENSE + Input Bias Current

VSENSE

+ = VSENSE– = 10V (Note 3)

q

24.5

10

µA

VSENSE+ = VSENSE– = 0V (Note 5)

q

– 300

– 175

– 75

µA

IBSENSE–

SENSE – Input Bias Current

VSENSE+ = VSENSE– = 10V (Note 3)

q

24.5

10

µA

VSENSE+ = VSENSE– = 0V (Note 5)

q

– 300

– 175

– 75

µA

VSENSE

Inrush Current Limit Sense Voltage

VSENSE– = 10V (VSENSE+ – VSENSE–) (Note 3)

0.15

0.20

0.25

V

VSENSE– = 0V (VSENSE+ – VSENSE–)

0.10

0.20

0.30

V

IPDSAB

SAB1, SAB2 Pull-Down Current

VIN1 = VIN2 = VDIODE = 0.4V, V + = 10V (Note 3)

5

20

35

µA

VIN1 = VIN2 = 0.4V, VDIODE = 2V

30

140

300

µA

ITIMER

Timer Source Current

VIN1 = 0.4V, VIN2 = VDIODE = 2V, VTIMER = 0V,

q

369

µA

VSENSE+ – VSENSE– = 300mV

VTIMER

Timer Latch Threshold Voltage

VIN1 = 0.4V, VIN2 = VDIODE = 2V

q

1.05

1.16

1.25

V

tON

Gate Drive Rise Time

CGS = 1000pF, VSAB1 = VSAB2 = 0V (Note 6)

33

µs

tOFF

Gate Drive Fall Time

CGS = 1000pF, VSAB1 = VSAB2 = 5V (Note 6)

2

µs

tD1

Gate Drive Turn-On Delay

CGS = 1000pF, VSAB1 = VSAB2 = 0V (Note 6)

22

µs

tD2

Gate Drive Turn-Off Delay

CGS = 1000pF, VSAB1 = VSAB2 = 5V (Note 6)

1

µs

fOVGG

VGS Regulator Operating Frequency

30

kHz

The q denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. Test circuit, V+ = 5V, unless otherwise specified.

TOP VIEW

GN PACKAGE

16-LEAD NARROW PLASTIC SSOP

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

IN1

IN2

DIODE

TIMER

V+

VGG

SW

GND

GA1

SAB1

GB1

SENSE+

SENSE–

GA2

SAB2

GB2

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