RT9828 datasheet(3/7 Pages) RICHTEK

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RT9828

DS9828-02 April 2011

www.richtek.com

Absolute Maximum Ratings (Note 1)

Input Voltage (with Respect to GND)

VDD1/VDD2 ---------------------------------------------------------------------------------------------------------------

−0.3V to 6V

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

−0.3V to VDD+ 0.3V

Input Current, IDD1/IDD2 ----------------------------------------------------------------------------------------------- 20mA

Power Dissipation, PD @ TA = 25

°C

SOT-23-6 ---------------------------------------------------------------------------------------------------------------- 0.4W

Package Thermal Resistance (Note 2)

SOT-23-6,

θJA ----------------------------------------------------------------------------------------------------------- 250°C/W

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

°C

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

°C

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

−65°C to 150°C

ESD Susceptibility (Note 3)

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

MM (Machine Mode) -------------------------------------------------------------------------------------------------- 200V

Electrical Characteristics

(VDD = 3V, TA = 25

°C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Input Voltage

VDD1 / VDD2

0.9

Supply Current

IVDD1 / IVDD2 VTH = 3V, VDD = 4.5V

Threshold Voltage Accuracy

ΔVTH

−1.5

+1.5

VDD Drop to Reset Delay

tRD

Drop = VTH −125mV

Reset Active Time Out Period tRP

VDD ≥ 1.02 × VTH

RESET Output Voltage Low

VOL

1.6 = VDD < VTH, ISINK > 3.5mA

0.4

Hysteresis Width

VHYS

0.01VTH

Recommended Operating Conditions

(Note 4)

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

−40°C to 125°C

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

−40°C to 85°C

Note 1. Stresses listed as the above

“Absolute Maximum Ratings” may cause permanent damage to the device. These are

for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the

operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended

periods may remain possibility to affect device reliability.

Note 2.

θJA is measured in the natural convection at TA = 25°C on a low effective single layer thermal conductivity test board

of JEDEC 51-3 thermal measurement standard.

Note 3. Devices are ESD sensitive. Handling precaution is recommended.

Note 4. The device is not guaranteed to function outside its operating conditions.

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