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參數資料
型號: SC424MLTRT
廠商: Semtech
文件頁數: 7/29頁
文件大小: 496K
描述: IC REG DL BUCK/LINEAR 28MLPQ
標準包裝: 1
系列: SmartDrive™
拓撲: 降壓(降壓)(1),線性(LDO)(1)
功能: 任何功能
輸出數: 2
頻率 - 開關: 200kHz ~ 1MHz
電壓/電流 - 輸出 1: 可調至 0.75V,6A
電壓/電流 - 輸出 2: 5V,150mA
帶 LED 驅動器:
帶監控器:
帶序列發生器:
電源電壓: 3 V ~ 28 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-VFQFN 裸露焊盤
供應商設備封裝: 28-MLPQ(4x4)
包裝: 標準包裝
其它名稱: SC424MLDKR
SC414/SC424
7
Electrical Characteristics (continued)
Parameter
Conditions
Min  Typ  Max  Units
Linear Regulator  LDO (not available for V5V < 5V)
VLDO Accuracy
VLDO load = 10mA
4.9    5.0    5.1    V
LDO Current Limit
Start-up and foldback, V
IN
 = 12V
85
mA
Operating current limit, V
IN
 = 12V
135   200
VLDO to VOUT Switch-over Threshold
(4)
-140
+140   mV
VLDO to VOUT Non-switch-over Threshold
(4)
-450
+450   mV
VLDO to VOUT Switch-over Resistance
V
OUT
 = +5V
2
?/DIV>
LDO Drop Out Voltage
(5)
From V
IN
 to V
VLDO
, V
VLDO
 = +5V, I
VLDO
 = 100mA
1.2
V
Notes:
(1) V
IN
 UVLO is programmable using a resistor divider from VIN to ENL to AGND. The ENL voltage is compared to an internal reference.
(2) Guaranteed by design.
(3) For V5V less than 4.5V, the On-Time may be limited by the V5V supply voltage and by V
IN
. See the TON Limitations and V5V Supply Voltage
section in the applications Information.
(4) The switch-over threshold is the maximum voltage diff erential between the VLDO and VOUT pins which ensures that VLDO will internally
switch-over to V
OUT
. The non-switch-over threshold is the minimum voltage diff erential between the VLDO and VOUT pins which ensures that
VLDO will not switch-over to V
OUT
.
(5) The LDO drop out voltage is the voltage at which the LDO output drops 2% below the nominal regulation point. Thermal resistance, junction
to ambient  guaranteed by design (癈/W)
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