RT9834 datasheet(4/13 Pages) RICHTEK

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RT9834

DS9834-00 May 2013

www.richtek.com

is a registered trademark of Richtek Technology Corporation.

Absolute Maximum Ratings

(Note 1)

Terminal Voltage (with Respect to GND)

VDD ---------------------------------------------------------------------------------------------------------------------

−0.3V to 6V

All Other Inputs -----------------------------------------------------------------------------------------------------

−0.3V to (VDD+ 0 .3V)

Input Current, IVDD -------------------------------------------------------------------------------------------------- 20mA

Power Dissipation, PD @ TA = 25°C

SOT-143 -------------------------------------------------------------------------------------------------------------- 0.44W

SC-82 ----------------------------------------------------------------------------------------------------------------- 0.29W

Package Thermal Resistance (Note 2)

SOT-143,

θJA--------------------------------------------------------------------------------------------------------- 228.1°C/W

SC-82,

θJA ------------------------------------------------------------------------------------------------------------ 345.6°C/W

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

°C

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

−65°C to 125°C

ESD Susceptibility (Note 3)

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

Electrical Characteristics

(VDD = 3V, TA = 25

°C, unless otherwise specified)

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

RT9834A/B/C/D

0.9

Operating VDD (VOUT) Range

VDD

RT9834E/F/G/H

1.1

Supply Current

IDD

VTH = 3V, VDD = 4.5V

μA

Reset Threshold

VTH

1.2 to 5

Threshold Voltage Accuracy

ΔV

−1.5

1.5

Threshold Voltage Hysteresis

VHYS

0.01 VTH

VDD Drop to Reset Delay

tRD

Drop = VTH −125mV

μs

RT9834A/E

RT9834B/F

RT9834C/G

143

220

297

Reset Active

Timeout Period

RT9834D/H

tRP

VDD ≥ 1.02 x VTH

292

450

608

VDD < VTH(MIN) ,ISINK = 3.5mA,

VTH ≥ 3V

0.4

VDD < VTH(MIN) ,ISINK = 1.2mA,

VTH ≥ 1.8V

0.3

RESET Output Voltage Low

VOL

VTH(MIN) > VDD > 1V,

ISINK = 0.5mA

0.3

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