RT9232B 查看數據表（PDF） - Richtek Technology
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RT9232B Datasheet PDF : 14 Pages
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RT9232B
Absolute Maximum Ratings (Note 1)
Supply Input Voltage, VCC, PVCC --------------------------------------------------------------------------- 15V
PHASE to GND
DC ------------------------------------------------------------------------------------------------------------------- −5V to 15V
< 200ns ------------------------------------------------------------------------------------------------------------ −10V to 30V
BOOT to PHASE ------------------------------------------------------------------------------------------------ 15V
BOOT to GND
DC ------------------------------------------------------------------------------------------------------------------- −0.3V to VCC+15V
< 200ns ------------------------------------------------------------------------------------------------------------ −0.3V to 42V
SS, FB, COMP, RT --------------------------------------------------------------------------------------------- 6V
Input, Output or I/O Voltage ----------------------------------------------------------------------------------- GND−0.3V to VCC+ 0.3V
Package Thermal Resistance (Note 4)
SOP-14, θJA ----------------------------------------------------------------------------------------------------- 100°C/W
Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------- 260°C
Junction Temperature ------------------------------------------------------------------------------------------ 150°C
Storage Temperature Range ---------------------------------------------------------------------------------- −65°C to 150°C
ESD Susceptibility (Note 2)
HBM (Human Body Mode) ----------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------- 150V
Recommended Operating Conditions (Note 3)
Supply Input Voltage, VCC ------------------------------------------------------------------------------------ 12V ±10%
Supply Voltage to Drain of Upper MOSFETs, VIN ------------------------------------------------------- 3.3V, 5V to 12V ±10%
Ambient Temperature Range --------------------------------------------------------------------------------- −40°C to 85°C
Junction Temperature Range --------------------------------------------------------------------------------- −40°C to 125°C
Electrical Characteristics
(VCC = 12V, TA = 25°C, Unless otherwise specified.)
Parameter
VCC Supply Current
Nominal Supply Current
Power-On Reset (POR)
Symbol
Test Conditions
Min
ICC
EN = VCC, UGATE, LGATE open --
VCC Rising Threshold
VCC_ON VOCSET = 4.5V
8.4
Power On Reset Hysteresis
VOCSET = 4.5V
0.3
OCSET Rising Threshold for start up VOCSET_ON
--
Enable Input Threshold (ON)
VEN_ON VOCSET = 4.5V
--
Enable Input Threshold (OFF)
VEN,_OFF VOCSET = 4.5V
0.8
Oscillator
RT9232B
Free Running Frequency
fOSC
170
Variation
6k < (RT to GND) < 200k
−20
Ramp Amplitude
ΔVOSC
--
Typ. Max Units
3
-- mA
-- 10.4 V
0.7 --
V
1.5 2
V
--
2
V
--
--
V
200 230 kHz
-- 20 %
1.5
-- VP-P
To be continued
DS9232B-03 March 2007
www.richtek.com
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