RT9986A datasheet(11/24 Pages) RICHTEK

11 / 24 page

DS9986A-00 May 2011

www.richtek.com

RT9986A

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 natural convection at TA = 25°C on a high-effective thermal conductivity four-layer test board of JEDEC

51-7 thermal measurement standard. The measurement case position of

θJC is on the exposed pad of the package.

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

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

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Thermal Protection

Thermal Shutdown

TSD

125

160

°C

Thermal Shutdown Hysteresis

ΔTSD

°C

System Reset

SYSR, FB2 Regulation Threshold

for SYSR to go low

0.709

0.72

0.731

SYSR, FB2 Hysteresis

SYSR Rising Delay Time

SYSR Sink Capability

VSYSR = 0.5V

Voltage Detector

Voltage Detector Reset Threshold

(VCHK

< Threshold

RST = L)

VCHK Falling

1.57

1.6

1.63

Voltage Detector Reset Hysteresis

Standby Current

VVCHK = 3V

μA

RST Rising Delay Time

RST Sink Capability

VRST = 0.5V, VVCHK = 1.5V

RTC LDO

Standby Current

VDDM = 4.2V

μA

Regulated Output Voltage @

RTCPWR

IOUT = 0mA

3.1

3.2

3.3

Max Output Current (Current Limit)

VDDM = 4.2V

130

200

IOUT = 50mA

1000

IOUT = 10mA

150

Dropout Voltage

IOUT = 3mA

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