LT8620 datasheet(3/26 Pages) LINER

3 / 26 page

LT8620

8620fa

For more information www.linear.com/LT8620

ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings may

cause permanent damage to the device. Exposure to any Absolute Maximum

Rating condition for extended periods may affect device reliability and lifetime.

Note 2: The LT8620E is guaranteed to meet performance specifications

from 0°C to 125°C junction temperature. Specifications over the –40°C

to 125°C operating junction temperature range are assured by design,

characterization, and correlation with statistical process controls. The

LT8620I is guaranteed over the full –40°C to 125°C operating junction

temperature range. The LT8620H is guaranteed over the full −40°C to

The l 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

2.9

3.4

VIN Quiescent Current

VEN/UV = 0V, VSYNC = 0V

1.0

µA

VEN/UV = 2V, Not Switching, VSYNC = 0V

1.7

µA

VEN/UV = 2V, Not Switching, VSYNC = 2V

0.28

0.5

VIN Current in Regulation

VOUT = 0.97V, VIN = 6V, Output Load = 100µA

VOUT = 0.97V, VIN = 6V, Output Load = 1mA

200

350

µA

Feedback Reference Voltage

VIN = 6V, ILOAD = 0.5A

0.964

0.958

0.970

0.976

0.982

Feedback Voltage Line Regulation

VIN = 4.0V to 42V, ILOAD = 0.5A

0.004

0.02

%/V

Feedback Pin Input Current

VFB = 1V

–20

INTVCC Voltage

ILOAD = 0mA, VBIAS = 0V

ILOAD = 0mA, VBIAS = 3.3V

3.23

3.25

3.4

3.29

3.57

3.35

INTVCC Undervoltage Lockout

2.5

2.6

2.7

BIAS Pin Current Consumption

VBIAS = 3.3V, ILOAD = 1A, 2MHz

7.2

Minimum On-Time

ILOAD = 1A, SYNC = 0V

ILOAD = 1A, SYNC = 3.3V

Minimum Off-Time

130

Oscillator Frequency

RT = 221k, ILOAD = 1A

RT = 60.4k, ILOAD = 1A

RT = 18.2k, ILOAD = 1A

180

665

1.85

210

700

2.00

240

735

2.15

kHz

MHz

Top Power NMOS On-Resistance

ISW = 1A

175

mΩ

Top Power NMOS Current Limit

2.8

4.1

4.9

Bottom Power NMOS On-Resistance

VINTVCC = 3.4V, ISW = 1A

mΩ

Bottom Power NMOS Current Limit

VINTVCC = 3.4V

2.9

3.9

4.7

SW Leakage Current

VIN = 42V, VSW = 0V, 42V

–1.5

1.5

µA

EN/UV Pin Threshold

EN/UV Rising

0.94

1.0

1.06

EN/UV Pin Hysteresis

EN/UV Pin Current

VEN/UV = 2V

–20

PG Upper Threshold Offset from VFB

VFB Falling

9.0

PG Lower Threshold Offset from VFB

VFB Rising

–6

–9.0

–12

PG Hysteresis

1.3

PG Leakage

VPG = 3.3V

–40

PG Pull-Down Resistance

VPG = 0.1V

680

2000

SYNC Threshold

SYNC Falling

SYNC Rising

0.8

1.1

1.0

1.3

1.2

1.5

SYNC Pin Current

VSYNC = 6V

–100

100

TR/SS Source Current

1.2

2.7

µA

TR/SS Pull-Down Resistance

Fault Condition, TR/SS = 0.1V

220

150°C operating junction temperature range. The LT8620MP is 100%

tested and guaranteed over the full −55°C to 150°C operating junction

temperature range. High junction temperatures degrade operating lifetimes.

Operating lifetime is derated at junction temperatures greater than 125°C.

Note 3: This IC includes overtemperature protection that is intended to protect

the device during overload conditions. Junction temperature will exceed 150°C

when overtemperature protection is active. Continuous operation above the

specified maximum operating junction temperature will reduce lifetime.

LT8620 Datasheet(PDF) 3 Page - Linear Technology

LT8620 Datasheet(HTML) 3 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

Datasheet Download

Link URL