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RT9218BGS bảng dữ liệu(PDF) 5 Page - Richtek Technology Corporation

tên linh kiện RT9218BGS
Giải thích chi tiết về linh kiện  12V Synchronous Buck PWM DC-DC and Linear Power Controller
PDF  17 Pages
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nhà sản xuất  RICHTEK [Richtek Technology Corporation]
Trang chủ  http://www.richtek.com
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RT9218BGS bảng dữ liệu(HTML) 5 Page - Richtek Technology Corporation

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RT9218B
5
DS9218B-09 March 2007
www.richtek.com
Electrical Characteristics
(VCC = 5V/12V, TA = 25°C, unless otherwise specified)
Absolute Maximum Ratings
(Note 1)
Supply Voltage, VCC -------------------------------------------------------------------------------------- 16V
BOOT, VBOOT - VPHASE------------------------------------------------------------------------------------ 16V
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
UGATE ------------------------------------------------------------------------------------------------------- VPHASE
− 0.3V to VBOOT+ 0.3V
LGATE ------------------------------------------------------------------------------------------------------- GND
− 0.3V to VVCC + 0.3V
Input, Output or I/O Voltage ----------------------------------------------------------------------------- GND
− 0.3V to 7V
Package Thermal Resistance (Note 4)
SOP-14,
θJA ------------------------------------------------------------------------------------------------- 127.67°C/W
Junction Temperature ------------------------------------------------------------------------------------- 150
°C
Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------- 260
°C
Storage Temperature Range ----------------------------------------------------------------------------
−40°C to 150°C
ESD Susceptibility (Note 2)
HBM (Human Body Mode) ------------------------------------------------------------------------------ 2kV
MM (Machine Mode) -------------------------------------------------------------------------------------- 200V
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
VCC Supply Current
Nominal Supply Current
ICC
UGATE and LGATE Open
--
6
15
mA
Power-On Reset
POR Threshold
VCCRTH
VCC Rising
--
4.1
4.5
V
Hysteresis
VCCHYS
0.35
0.5
--
V
Switcher Reference
Reference Voltage
VREF
VCC = 12V
0.792
0.8
0.808
V
Oscillator
Free Running Frequency
fOSC
VCC = 12V
250
300
350
kHz
Ramp Amplitude
ΔVOSC
--
1.5
--
VP-P
To be continued
Recommended Operating Conditions
(Note 3)
Supply Voltage, VCC -------------------------------------------------------------------------------------- 12V
± 10%
Junction Temperature Range ----------------------------------------------------------------------------
−40°C to 125°C
Ambient Temperature Range ----------------------------------------------------------------------------
−40°C to 85°C



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