RT9701B datasheet(3/11 Pages) RICHTEK

3 / 11 page

RT9701B

DS9701B-04 March 2007

www.richtek.com

Preliminary

Electrical Characteristics

Absolute Maximum Ratings

(Note 1)

Supply Voltage ------------------------------------------------------------------------------------------------------------- 7V

Chip Enable -----------------------------------------------------------------------------------------------------------------

−0.3V to 7V

Power Dissipation, PD @ TA = 25°C

SOT-23-5 -------------------------------------------------------------------------------------------------------------------- 0.4W

Package Thermal Resistance (Note 3)

SOT-23-5,

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

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

°C

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

−20°C to 100°C

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

−65°C to 150°C

ESD Susceptibility (Note 2)

HBM (Human Body Mode) ---------------------------------------------------------------------------------------------- 8kV

MM (Machine Mode) ------------------------------------------------------------------------------------------------------ 700V

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Input Voltage Range

VIN

3.5

RT9701BCBL

IL = 1A

100

Output NMOSFET RDS(ON)

RT9701BCB

RDS(ON)

IL = 1A

100

Quiescent Current

VIN = 5V

μA

Output Turn-On Rising Time

RL = 10Ω, 90% Settling

400

μs

Current Limit Threshold

ILIM

RL = 2Ω

1.1

1.5

Short-circuit Fold Back Current

IOS

VOUT = 0V, measured

prior to thermal shutdown

1.0

EN Input High Threshold

RT9701BCB

2.0

EN Input Low Threshold

RT9701BCB

0.8

Shutdown Supply Current

RT9701BCB

IOFF

EN = “0”

0.1

μA

Output Leakage Current

RT9701BCB

ILEAKAGE EN = “0”, VOUT = 0V

0.5

μA

VIN Under Voltage Lockout

UVLO

2.8

VIN Under Voltage Hysteresis

100

Thermal Limit

TSD

130

°C

Thermal Limit Hysteresis

ΔTSD

°C

(VIN = 5V, CIN = COUT = 1

μF, TA = 25°C, unless otherwise specified)

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.

Devices are ESD sensitive. Handling precaution recommended.

Note 3.

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

JEDEC 51-3 thermal measurement standard.

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