RT9218B Просмотр технического описания (PDF) - Richtek Technology
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RT9218B Datasheet PDF : 17 Pages
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RT9218B
Absolute Maximum Ratings (Note 1)
z Supply Voltage, VCC -------------------------------------------------------------------------------------- 16V
z BOOT, VBOOT - VPHASE ------------------------------------------------------------------------------------ 16V
z PHASE to GND
DC ------------------------------------------------------------------------------------------------------------- −5V to 15V
< 200ns ------------------------------------------------------------------------------------------------------ −10V to 30V
z BOOT to PHASE ------------------------------------------------------------------------------------------ 15V
z BOOT to GND
DC ------------------------------------------------------------------------------------------------------------- −0.3V to VCC+15V
< 200ns ------------------------------------------------------------------------------------------------------ −0.3V to 42V
z UGATE ------------------------------------------------------------------------------------------------------- VPHASE − 0.3V to VBOOT + 0.3V
z LGATE ------------------------------------------------------------------------------------------------------- GND − 0.3V to VVCC + 0.3V
z Input, Output or I/O Voltage ----------------------------------------------------------------------------- GND − 0.3V to 7V
z Package Thermal Resistance (Note 4)
SOP-14, θJA ------------------------------------------------------------------------------------------------- 127.67°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, VCC -------------------------------------------------------------------------------------- 12V ± 10%
z Junction Temperature Range ---------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range ---------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(VCC = 5V/12V, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
VCC Supply Current
Nominal Supply Current
Power-On Reset
ICC
UGATE and LGATE Open
POR Threshold
Hysteresis
Switcher Reference
VCCRTH
VCCHYS
VCC Rising
Reference Voltage
Oscillator
VREF
VCC = 12V
Free Running Frequency
Ramp Amplitude
fOSC
ΔVOSC
VCC = 12V
Min Typ Max Units
--
6 15 mA
-- 4.1 4.5 V
0.35 0.5 --
V
0.792 0.8 0.808 V
250 300 350 kHz
-- 1.5 -- VP-P
To be continued
DS9218B-09 March 2007
www.richtek.com
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