RT9005APSP datasheet(4/10 Pages) RICHTEK

4 / 10 page

RT9005A/B

Preliminary

DS9005A/B-01 September 2007

www.richtek.com

Absolute Maximum Ratings (Note 1)

Supply Input Voltage, VIN -------------------------------------------------------------------------------------------- 6V

Power Dissipation, PD @ TA = 25

°C

SOP-8 (Exposed) ----------------------------------------------------------------------------------------------------- 1.33W

Package Thermal Resistance (Note 4)

SOP-8 (Exposed),

θJA ------------------------------------------------------------------------------------------------ 75°C/W

SOP-8 (Exposed),

θJC ----------------------------------------------------------------------------------------------- 28°C/W

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

°C

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

°C

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

−65°C to 150°C

ESD Susceptibility (Note 2)

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

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

Electrical Characteristics

Parameter

Symbol

Test Conditions

Min

Typ

Max Units

Input

Operation Current

IVCNTL

IOUT = 0A

1.5

3.0

Standby Current

(Note 5)

ISTBY2

VREFEN < 0.2V (Shutdown),

RLOAD = 180Ω

μA

VOUT1 (VDDQ)

VOUT1 Accuracy

ΔVOUT

IOUT = 10mA

−2

VOUT1 Current Limit

ILIM1

RLOAD = 0.5Ω, VIN1 = 3.3V

2.8

IOUT = 0.5A

120

180

VOUT1 Dropout Voltage

(Note 6)

VDROP

IOUT = 1.0A

240

360

Line Regulation

ΔVLINE

VIN1 = (VOUT1 + 0.5V) to 5.5V

IOUT1 = 1mA

0.3

Load Regulation

(Note 7)

ΔVLOAD

VIN1 = (VOUT1 + 0.5V)

10mA < IOUT1 < 1A

0.4

%/A

VOUT2 (VTT)

Output Offset Voltage

(Note 8) VOS

IOUT = 0A

−20

+20

Recommended Operating Conditions

(Note 3)

Supply Input Voltage, VIN1 ------------------------------------------------------------------------------------------ 5V to 2.5V

Supply Input Voltage, VIN2 ------------------------------------------------------------------------------------------ 3.6V to 1.5V

Control Voltage, VCNTL ----------------------------------------------------------------------------------------------- 5V to 3.1V

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

−40°C to 125°C

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

−40°C to 85°C

To be continued

(VIN1 =3.3V , VIN1 = VOUT + 1V, CIN1 = COUT1 = 2.2

μF (Ceramic) & CBP = 10nF; VIN2 = 2.5V/1.8/1.5V, VCNTL = 3.3V, VREFEN = 1.25V/

0.9/0.75V, CIN2 = 470

μF, CVCNTL= 47μF, COUT2 = 1000μF(Electrolytic), TA = 25°C, unless otherwise specified)

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