RT9643 Datasheet, PDF (8/17 Pages) Richtek Technology Corporation – 5 Channel ACPI Regulator with Step-Down DC/DC Controller

RT9643
Absolute Maximum Ratings (Note 1)
z Supply Input Voltage, V_CC ------------------------------------------------------------------------------- 6.5V
z PHASE Voltage -------------------------------------------------------------------------------------------- GND − 5V to 24V
z UGATE Voltage -------------------------------------------------------------------------------------------- V_PHASE − 0.3V to V_BOOT + 0.3V
z LGATE Voltage --------------------------------------------------------------------------------------------- GND − 0.3V to V_CC + 0.3V
z BOOT to GND ---------------------------------------------------------------------------------------------- 24V
z VCC_EN to GND ------------------------------------------------------------------------------------------- 24V
z BOOT to PHASE ------------------------------------------------------------------------------------------ 6.5V
z BOOT to UGATE ------------------------------------------------------------------------------------------ 6.5V
z UGATE to PHASE ---------------------------------------------------------------------------------------- 6.5V
z Input, Output or I/O Voltage ----------------------------------------------------------------------------- GND − 0.3V to V_CC + 0.3V
z Storage Temperature Range ---------------------------------------------------------------------------- −65°C to 150°C
z Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------- 260°C
z Junction Temperature Range ---------------------------------------------------------------------------- −20°C to 125°C
z Power Dissipation, PD @ T_A = 25°C
VQFN-24L 5x5 --------------------------------------------------------------------------------------------- 1.923W
z Package Thermal Resistance (Note 4)
VQFN-24L 5x5, θ_JA ---------------------------------------------------------------------------------------- 52°C/W
z ESD Susceptibility (Note 2)
HBM (Human Body Mode) ------------------------------------------------------------------------------ 2kV
MM (Machine Mode) -------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 3)
z Supply Voltage, V_CC -------------------------------------------------------------------------------------- 5V ± 10%
z Ambient Temperature Range ---------------------------------------------------------------------------- −10°C to 85°C
Electrical Characteristics
(Rocommended Operating Conditions, unless otherwise specification)
Parameter
Symbol
Test Condition
Converter & POR
VCC Current
I_VCC
LGATE, UGATE open, FB > 0.9,
I(VTT) = 0, EN = 1, S3#I = 1
EN = 1, S3#I=LOW, I(3.3)< 10mA
EN = 0, I(3.3) = 0
VCC UVLO Threshold
Rising V_CC
Falling
Hysteresis
Rising
5V_MainUVLO Threshold
Falling
Hysteresis
Min Typ Max Units
--
6
24
mA
--
6
24
mA
--
2
4
mA
4.0
4.2
4.4
V
3.9 4.05
4.2
V
--
150
--
mV
4.3
4.4
4.6
V
3.9
4.1
4.2
V
--
300
--
mV
To be continued
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8
DS9643-03 August 2007