SC414 データシートの表示（PDF） - Semtech Corporation
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SC414 Datasheet PDF : 29 Pages
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SC414/SC424
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
VLDO to VOUT Switch-over Threshold (4)
Start-up and foldback, V = 12V
IN
Operating current limit, V = 12V
IN
85
mA
135 200
-140
+140 mV
VLDO to VOUT Non-switch-over Threshold (4)
-450
+450 mV
VLDO to VOUT Switch-over Resistance
V = +5V
OUT
2
Ω
LDO Drop Out Voltage (5)
From V to V , V = +5V, I = 100mA
IN
VLDO VLDO
VLDO
1.2
V
Notes:
(1) V UVLO is programmable using a resistor divider from VIN to ENL to AGND. The ENL voltage is compared to an internal reference.
IN
(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 . See the TON Limitations and V5V Supply Voltage
IN
section in the applications Information.
(4) The switch-over threshold is the maximum voltage differential between the VLDO and VOUT pins which ensures that VLDO will internally
switch-over to V . The non-switch-over threshold is the minimum voltage differential between the VLDO and VOUT pins which ensures that
OUT
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 (°C/W)
7
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