RT9645 Просмотр технического описания (PDF) - Richtek Technology

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RT9645

5 Channels ACPI Regulator

Richtek Technology 

RT9645

Preliminary

Absolute Maximum Ratings (Note 1)

z Supply Voltage, VDD ------------------------------------------------------------------------------------- 7V

z Supply Voltage, PVIN ----------------------------------------------------------------------------------- 16V

z PHASE to GND

DC ------------------------------------------------------------------------------------------------------------ −0.5V to 7V

< 200ns ----------------------------------------------------------------------------------------------------- −2V to 7V

z BOOT to GND

DC ------------------------------------------------------------------------------------------------------------ −0.3V to 20V

< 200ns ----------------------------------------------------------------------------------------------------- −0.3V to 22V

z BOOT, VBOOT − VPHASE ---------------------------------------------------------------------------------- 16V

z UGATE Voltage ------------------------------------------------------------------------------------------- VPHASE − 0.3V to VBOOT + 0.3V

z LGATE Voltage -------------------------------------------------------------------------------------------- GND − 0.3V to VDD + 0.3V

z Input, Output or I/O Voltage ---------------------------------------------------------------------------- GND − 0.3V to 7V

z Power Dissipation, PD @ TA = 25°C

VQFN-24L 4x4 -------------------------------------------------------------------------------------------- 1.85W

z Package Thermal Resistance (Note 4)

VQFN-24L 4x4, θJA --------------------------------------------------------------------------------------- 54°C/W

z Junction Temperature ------------------------------------------------------------------------------------ 150°C

z Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------- 260°C

z Storage Temperature Range --------------------------------------------------------------------------- −40°C to 150°C

z ESD Susceptibility (Note 2)

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

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

Recommended Operating Conditions (Note 3)

z Supply Voltage, VDD ------------------------------------------------------------------------------------- 5V ± 5%

z Supply Voltage, PVIN ----------------------------------------------------------------------------------- 12V ± 10%

z Junction Temperature Range --------------------------------------------------------------------------- −40°C to 125°C

z Ambient Temperature Range --------------------------------------------------------------------------- 0°C to 70°C

Electrical Characteristics

(VDD = 5V, PVIN = 12V, TA = 25°C, unless otherwise specification)

Par amete r

Symbol

Test Condition

Supply Current

Nominal Supply Current

ICC

S0; no load for UGATE / LGATE

and regulators

Power-On Reset

Rising VDD POR Threshold

VDD POR Hysteresis

VPORH_5V

VPORHY S_5V

Rising PVIN POR Threshold VPORH_12V VDD = 5V

PVIN POR Hysteresis

VPORHY S_12V VDD = 5V

Min Typ Max Units

--

4

-- mA

3.9 4.1 4.3

V

0.06 0.1 --

V

9 9.5 10

V

0.6 1

--

V

To be continued

www.richtek.com

6

DS9645-00 August 2007

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