RT9832 datasheet(3/12 Pages) RICHTEK

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RT9832

DS9832-00

January 2013

www.richtek.com

is a registered trademark of Richtek Technology Corporation.

Absolute Maximum Ratings

(Note 1)

Supply Voltage, VCC -----------------------------------------------------------------------------------------------------

−0.3V to 22V

Output Voltage, OUT -----------------------------------------------------------------------------------------------------

−0.3V to 22V

EN, RSET -------------------------------------------------------------------------------------------------------------------

−0.3V to 6V

Power Dissipation, PD @ TA = 25

°C

WL-CSP-6B 0.8x1.2 (BSC) --------------------------------------------------------------------------------------------- 0.68W

Package Thermal Resistance (Note 2)

WL-CSP-6B 0.8x1.2 (BSC),

θJA --------------------------------------------------------------------------------------- 148°C/W

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

°C

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

°C

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

−65°C to 150°C

ESD Susceptibility (Note 3)

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

MM (Machine Model) ----------------------------------------------------------------------------------------------------- 200V

Recommended Operating Conditions

(Note 4)

Supply Input Voltage ------------------------------------------------------------------------------------------------------ 2.8V to 20V

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

−40°C to 125°C

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

−40°C to 85°C

Electrical Characteristics

(VCC = 4V, CIN = 0.47

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

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Power Supply

Supply Current

IVCC

VCC = 5V, EN = Low, RSET = 500kΩ

UVLO Threshold

VUVLO

VCC Falling

2.5

UVLO Hysteresis

ΔV

UVLO

100

VCC Shutdown Current

ISHDN

VCC = 5V, EN = High

3.5

μA

Duty Generator

RSET Voltage

VSET

0.833

0.85

0.867

PWM Frequency

fPWM

0.45

0.5

0.55

Minimum Duty Cycle

DMIN

Duty Cycle

Duty

RSET

/ 10k

Duty Cycle Accuracy

DACC

RSET = 50kΩ to 1000kΩ

−10

Output

OUT Current Sink Ability

ISINK

VCC ≥ 4V, VOUT = 0.1V

OUT Leakage Current

ILEAK

VCC = 5V, EN = High, VOUT = 5V

−0.1

0.1

μA

Protection Function

Thermal Shutdown

TSD

160

°C

Thermal Shutdown Hysteresis

ΔTSD

°C

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