LT8636 datasheet(3/32 Pages) AD

3 / 32 page

LT8636/LT8637

Rev. C

For more information www.analog.com

PART NUMBER

PART MARKING*

FINISH CODE

PAD FINISH

PACKAGE

TYPE**

MSL

RATING

TEMPERATURE RANGE

AUTOMOTIVE PRODUCTS***

LT8636EV#WPBF

8636

Au (RoHS)

LQFN (Laminate Package

with QFN Footprint)

–40°C to 125°C

LT8636JV#WPBF

–40°C to 150°C

LT8636JV#WTRPBF

–40°C to 150°C

LT8636HV#WPBF

–40°C to 150°C

LT8637EV#WPBF

8637

–40°C to 125°C

LT8637JV#WPBF

–40°C to 150°C

• Contact the factory for parts specified with wider operating temperature

ranges. *Device temperature grade is identified by a label on the

shipping container.

• Pad finish code is per IPC/JEDEC J-STD-609.

• Recommended PCB Assembly and Manufacturing Procedures

• Package and Tray Drawings

Parts ending with PBF are RoHS and WEEE compliant. **The LT8636/LT8637 package has the same dimensions as a standard 4mm × 3mm QFN package.

***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.

ORDER INFORMATION

ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage

3.0

3.4

VIN Quiescent Current in Shutdown

VEN/UV = 0V

µA

LT8636 VIN Quiescent Current in Sleep

(Internal Compensation)

VEN/UV = 2V, VFB > 0.97V, VSYNC = 0V

1.7

µA

LT8637 VIN Quiescent Current in Sleep

(External Compensation)

VEN/UV = 2V, VFB > 0.97V, VSYNC = 0V, VBIAS = 0V

230

290

340

µA

VEN/UV = 2V, VFB > 0.97V, VSYNC = 0V, VBIAS = 5V

µA

LT8637 BIAS Quiescent Current in Sleep

VEN/UV = 2V, VFB > 0.97V, VSYNC = 0V, VBIAS = 5V

200

260

µA

LT8636 VIN Current in Regulation

VOUT = 0.97V, VIN = 6V, ILOAD = 1mA, VSYNC = 0

220

390

µA

Feedback Reference Voltage

VIN = 6V

0.966

0.956

0.970

0.974

0.982

Feedback Voltage Line Regulation

VIN = 4.0V to 36V

0.004

0.02

%/V

Feedback Pin Input Current

VFB = 1V

–20

LT8637 Error Amp Transconductance

VC = 1.25V

1.7

LT8637 Error Amp Gain

260

LT8637 VC Source Current

VFB = 0.77V, VC = 1.25V

350

µA

LT8637 VC Sink Current

VFB = 1.17V, VC = 1.25V

350

µA

LT8637 VC Pin to Switch Current Gain

A/V

LT8637 VC Clamp Voltage

2.6

BIAS Pin Current Consumption

VBIAS = 3.3V, fSW = 2MHz

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