LT3470

3

Rev. E

For more information www.analog.com

ORDER INFORMATION

AUTOMOTIVE PRODUCTS**

LT3470EDDB#WTRMPBF

LT3470EDDB#WTRPBF

LBPN

8-Lead (3mm × 2mm) Plastic DFN

–40°C to 85°C

LT3470IDDB#WTRMPBF

LT3470IDDB#WTRPBF

LBPP

8-Lead (3mm × 2mm) Plastic DFN

–40°C to 125°C

LT3470HDDB#WTRMPBF

LT3470HDDB#WTRPBF

LCNR

8-Lead (3mm × 2mm) Plastic DFN

–40°C to 150°C

Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.

**Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These

models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your

local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for

these models.

The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 10V, VSHDN = 10V, VBOOST = 15V, VBIAS = 3V unless otherwise specified.

ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage

l

4

V

Quiescent Current from VIN

VSHDN = 0.2V

VBIAS = 3V, Not Switching

VBIAS = 0V, Not Switching

l

0.1

10

35

0.5

18

50

µA

µA

µA

Quiescent Current from Bias

VSHDN = 0.2V

VBIAS = 3V, Not Switching

VBIAS = 0V, Not Switching

l

0.1

25

0.1

0.5

60

1.5

µA

µA

µA

FB Comparator Trip Voltage

VFB Falling

l

1.228

1.250

1.265

V

FB Pin Bias Current (Note 3)

VFB = 1V, E- and I-Grade

l

35

35

80

150

nA

nA

H-Grade

l

35

225

nA

FB Voltage Line Regulation

4V < VIN < 40V

0.0006

0.01

%/V

Minimum Switch Off-Time (Note 5)

500

ns

Switch Leakage Current

0.7

1.5

µA

Switch VCESAT

ISW = 100mA (TS8 Package)

ISW = 100mA (DD8 Package)

215

215

300

mV

mV

Switch Top Current Limit

VFB = 0V

250

325

435

mA

Switch Bottom Current Limit

VFB = 0V

225

mA

Catch Schottky Drop

ISH = 100mA (TS8 Package)

ISH = 100mA (DD8 Package)

630

630

775

mV

mV

Catch Schottky Reverse Leakage

VSW = 10V

0.2

2

µA

Boost Schottky Drop

ISH = 30mA

650

775

mV

Boost Schottky Reverse Leakage

VSW = 10V, VBIAS = 0V

0.2

2

µA

Minimum Boost Voltage (Note 4)

l

1.7

2.2

V

BOOST Pin Current

ISW = 100mA

7

12

mA

SHDN Pin Current

VSHDN = 2.5V

1

5

µA

SHDN Input Voltage High

2.5

V

SHDN Input Voltage Low

0.2

V