RT6908 datasheet(6/22 Pages) RICHTEK

6 / 22 page

RT6908

DS6908-01

March 2013

www.richtek.com

is a registered trademark of Richtek Technology Corporation.

(Typical values VIN = VAVIN = VINB = 12V, VAVDD = 15.6V, VI/O = 3.3V, VCORE = 1.1V, VGH = 35.5V, VGL =

−6V, TA = 25°C, unless

otherwise specified)

Electrical Characteristics

Recommended Operating Conditions

(Note 4)

Junction Temperature Range --------------------------------------------------------------------------------------------

−40°C to 125°C

Ambient Temperature Range --------------------------------------------------------------------------------------------

−40°C to 85°C

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Supply Current

Input Voltage Range

VIN

AVIN Quiescent Current

IQIN

LX, LXBx Not Switching

3.5

VIN Rising

8.6

VIN Falling

7.2

7.6

Under Voltage Lockout Threshold

VUVLO

VIN Falling Latch Reset

VL Output Voltage

Fault Detection

Fault Trigger Duration

Thermal Shutdown Threshold

Temperature Rising

150

°C

Thermal Shutdown Hysteresis

°C

Absolute Maximum Ratings

(Note 1)

EN, EN_I2C, AVIN, VINB1, LXI, GD, AVDD, LX, LXB1, LXB2,

BOOT1, BOOT2, DHB2, VDET to PGND -----------------------------------------------------------------------------

−0.3 to 26V

SDA, SCL, A0, RSTB, CRST, VL, COMP, COMP1, COMP2, FBB1,

FBB2, ILIMIT2, DLB2, DRVN to PGND --------------------------------------------------------------------------------

−0.3 to 6V

BOOT1 to LXB1 -------------------------------------------------------------------------------------------------------------

−0.3 to 6V

BOOT2, DHB2 to LXB2 ---------------------------------------------------------------------------------------------------

−0.3 to 6V

DRVP, VGH to PGND -----------------------------------------------------------------------------------------------------

−0.3 to 44V

VGL to PGND ---------------------------------------------------------------------------------------------------------------

−26V to 26V

PGND to AGND -------------------------------------------------------------------------------------------------------------

±0.3V

Power Dissipation, PD @ TA = 25

°C

WQFN-40L 5x5 ------------------------------------------------------------------------------------------------------------- 2.778W

Package Thermal Resistance (Note 2)

WQFN-40L 5x5,

θJA -------------------------------------------------------------------------------------------------------- 36°C/W

WQFN-40L 5x5,

θJC ------------------------------------------------------------------------------------------------------- 6°C/W

Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------------- 260

°C

Junction Temperature ------------------------------------------------------------------------------------------------------ 150

°C

Storage Temperature Range ---------------------------------------------------------------------------------------------

−65°C to 150°C

ESD Susceptibility (Note 3)

HBM (Human Body Model) ----------------------------------------------------------------------------------------------- 2kV

MM (Machine Model) ------------------------------------------------------------------------------------------------------ 200V

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