RT9808 datasheet(3/12 Pages) ETC

3 / 12 page

Preliminary

RT9808

DS9808-01 January 2002

www.richtek-ic.com.tw

Absolute Maximum Ratings

Terminal Voltage (with Respect to GND)

VDD

-0.3V to 6.0V

All Other Inputs

-0.3V to VDD+0.3V

Input Current, VDD

20mA

Output Current, RESET

20mA

Power Dissipation, PD @ TA = 25

°C

SOT-23

0.25W

SOT-89

0.5W

SOT-25

0.25W

Operating Junction Temperature Range

-40

°C ~ 125°C

Storage Temperature Range

-65

°C ~ 125°C

Package Thermal Resistance

SOT-23,

θJA

250

°C /W

SOT-89,

θJC

100

°C /W

SOT-89,

θJA

300

°C /W

SOT-25,

θJA

250

°C /W

Lead Temperature (Soldering, 5sec.)

260

°C

Electrical Characteristics

(VDD = 3.0, unless specified)

Note1: 1.5V ~ 5V, step 0.1V

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Operating VDD (VOUT) Range

VDD

0.9

Supply Current

IDD

VDD = 1.5V ~ 5V, IOUT = 0

µA

Reset Threshold

VTH

TA = 27

°C

Note1

Threshold Voltage Accuracy

∆VTH

TA = 27

°C

VCC Drop to Reset Delay

tRD

Drop = -125mV

µS

Reset Active Time Out Period

tRP

VDD

≥ 1.02×VTH

200

RESET Output Voltage

VOL

VDD < VTH, ISINK > 3.5mA

0.4

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