參數(shù)資料
型號(hào): LT3581IDE#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類(lèi): 穩(wěn)壓器
英文描述: SWITCHING REGULATOR, PDSO14
封裝: 4 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, MO-229WGED-3, DFN-14
文件頁(yè)數(shù): 36/36頁(yè)
文件大?。?/td> 498K
代理商: LT3581IDE#PBF
LT3581
3581f
SHDN < 1.33V (TYPICAL)
or
VIN < 2.3V (TYPICAL)
SHDN > 1.33V (TYPICAL)
AND
VIN > 2.3V (TYPICAL)
FAULT DETECTED
SS CHARGES UP
IGATE OFF
FAULT PIN PULLED LOW
INTERNALLY BY LT3581
SWITCHER DISABLED
CLKOUT DISABLED
SS < 50mV
IF |VOUT| DROPS CAUSING:
FB < 1.17V (BOOST)
OR
FB > 45mV (INVERTING)
FAULT1
SS > 1.8V AND
NO FAULT1 CONDITIONS
STILL DETECTED
SS < 50mV
FAULT1
FAULT2
FAULT PIN > 1.0V
FAULT1 = OVER VOLTAGE PROTECTION ON VIN (VIN > 22V MIN)
OVER TEMPERATURE (TJUNCTION > 165°C)
OVER CURRENT ON SW1 (ISW1 > 1.9A MIN)
OVER VOLTAGE PROTECTION ON SW1 (VSW1 > 42V MIN)
OVER VOLTAGE PROTECTION ON SW2 (VSW2 > 42V MIN)
FAULT2 = FAULT PULLED LOW EXTERNALLY (FAULT < 0.75V)
CHIP OFF
ALL SWITCHES DISABLED
IGATE OFF
FAULTS CLEARED
INITIALIZE
SS PULLED LOW
NORMAL MODE
NORMAL OPERATION
CLKOUT ENABLED WHEN
SS > 1.8V
SAMPLE MODE
Q1 & Q2 SWITCHES
FORCED ON EVERY CYCLE
FOR AT LEAST MINIMUM
ON TIME
IGATE FULLY ACTIVATED
WHEN SS > 500mV
SOFT START
IGATE ENABLED
SS CHARGES UP
SWITCHER ENABLED
POST FAULT DELAY
SS SLOWLY DISCHARGES
LOCAL FAULT OVER
INTERNAL FAULT PIN PULLDOWN
RELEASED BY LT3581
SS CONTINUES DISCHARGING
TO GND
3581 SD
sTaTe DiagraM
Figure 2. State Diagram
相關(guān)PDF資料
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參數(shù)描述
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