SC4519 Ver la hoja de datos (PDF) - Semtech Corporation
Número de pieza
componentes Descripción
Fabricante
SC4519 Datasheet PDF : 15 Pages
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POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified: VIN = 12V, VCOMP = 0.8V, VBST = VIN + 5V, EN = tied to VIN, SYNC = 0, SW = open.
TA = TJ = -40°C to 85°C.
PARAMETER
SYMBOL
CONDITIONS
FB Input Current
IFB
Feedback Voltage
Feedback Voltage Line
Regulation
3V < VIN < 16V(2)
FB to VCOMP Voltage Gain(3)
FB to VCOMP
Transconductance(3)
0.4V ≤ VCOMP ≤ 0.9V
∆ ICOMP = ± 10µA
VCOMP Pin Source Current
VCOMP Pin Sink Current
VCOMP Pin to Switch Current
Transconductance
VFB = VOUT(NOM) - 17%
VFB = VOUT(NOM) + 17%
VCOMP Pin Maximum
Switching Threshold
Duty cycle = 0%
VCOMP Pin Threshold
Maximum Switch Duty Cycle
ISW = 3A
VCOMP = 1.2V, ISW = 400mA
Minimum Boost Voltage
Above Switch(3)
ISW = 3A, 0°C ≤ TA ≤ 85°C and
ISW = 2.5A, TA < 0°C
Boost Current
ISW = 1A
ISW = 3A, 0°C ≤ TA ≤ 85°C and
ISW = 2.5A, TA < 0°C
SC4519
MIN TYP MAX UNITS
-0.25 -0.50 µA
1.176 1.2 1.224 V
+3
mV/V
150 350
500 850 1300 µMho
70
110
µA
70
110
µA
2.5
A/V
0.35
V
0.9
V
85
%
1.8 2.7
V
10
15
mA
30
45
2007 Semtech Corp.
3
www.semtech.com
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