RT9643 datasheet(8/17 Pages) RICHTEK

8 / 17 page

RT9643

DS9643-03 August 2007

www.richtek.com

Absolute Maximum Ratings

(Note 1)

Supply Input Voltage, VCC------------------------------------------------------------------------------- 6.5V

PHASE Voltage -------------------------------------------------------------------------------------------- GND

− 5V to 24V

UGATE Voltage -------------------------------------------------------------------------------------------- VPHASE

− 0.3V to VBOOT+ 0.3V

LGATE Voltage --------------------------------------------------------------------------------------------- GND

− 0.3V to VCC + 0.3V

BOOT to GND ---------------------------------------------------------------------------------------------- 24V

VCC_EN to GND ------------------------------------------------------------------------------------------- 24V

BOOT to PHASE ------------------------------------------------------------------------------------------ 6.5V

BOOT to UGATE ------------------------------------------------------------------------------------------ 6.5V

UGATE to PHASE ---------------------------------------------------------------------------------------- 6.5V

Input, Output or I/O Voltage ----------------------------------------------------------------------------- GND

− 0.3V to VCC + 0.3V

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

−65°C to 150°C

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

°C

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

−20°C to 125°C

Power Dissipation, PD @ TA= 25

°C

VQFN-24L 5x5 --------------------------------------------------------------------------------------------- 1.923W

Package Thermal Resistance (Note 4)

VQFN-24L 5x5,

θJA ---------------------------------------------------------------------------------------- 52°C/W

ESD Susceptibility (Note 2)

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

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

Recommended Operating Conditions

(Note 3)

Supply Voltage, VCC -------------------------------------------------------------------------------------- 5V

± 10%

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

−10°C to 85°C

Electrical Characteristics

(Rocommended Operating Conditions, unless otherwise specification)

Parameter

Symbol

Test Condition

Min

Typ

Max

Units

Converter & POR

LGATE, UGATE open, FB > 0.9,

I(VTT) = 0, EN = 1, S3#I = 1

EN = 1, S3#I=LOW, I(3.3)< 10mA

VCC Current

IVCC

EN = 0, I(3.3) = 0

Rising VCC

4.0

4.2

4.4

Falling

3.9

4.05

4.2

VCC UVLO Threshold

Hysteresis

150

Rising

4.3

4.4

4.6

Falling

3.9

4.1

4.2

5V_MainUVLO Threshold

Hysteresis

300

To be continued

RT9643 Datasheet(PDF) 8 Page - Richtek Technology Corporation

RT9643 Datasheet(HTML) 8 Page - Richtek Technology Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Datasheet Download

Link URL