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RT9232BGS Datasheet(PDF) 5 Page - Richtek Technology Corporation

Part # RT9232BGS
Description  Programmable Frequency Synchronous Buck PWM Controller
PDF  14 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9232BGS Datasheet(HTML) 5 Page - Richtek Technology Corporation

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RT9232B
5
DS9232B-03
March 2007
www.richtek.com
Electrical Characteristics
(VCC = 12V, TA = 25
°C, Unless otherwise specified.)
Parameter
Symbol
Test Conditions
Min
Typ.
Max
Units
V
CC
Supply Current
Nominal Supply Current
ICC
EN = VCC, UGATE, LGATE open
--
3
--
mA
Power-On Reset (POR)
V
CC
Rising Threshold
VCC_ON
VOCSET = 4.5V
8.4
--
10.4
V
Power On Reset Hysteresis
VOCSET = 4.5V
0.3
0.7
--
V
OCSET Rising Threshold for start up VOCSET_ON
--
1.5
2
V
Enable Input Threshold (ON)
VEN_ON
VOCSET = 4.5V
--
--
2
V
Enable Input Threshold (OFF)
VEN,_OFF
VOCSET = 4.5V
0.8
--
--
V
Oscillator
RT9232B
fOSC
170
200
230
kHz
Free Running Frequency
Variation
6k < (RT to GND) < 200k
−20
--
20
%
Ramp Amplitude
ΔVOSC
--
1.5
--
VP-P
To be continued
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



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