ISL8009A Ver la hoja de datos (PDF) - Intersil
Número de pieza
componentes Descripción
Fabricante
ISL8009A Datasheet PDF : 13 Pages
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Typical Applications
ISL8009A
INPUT 2.7V TO 5.5V
C1
20µF
R1
100k
VIN
LX
GND
ISL8009A
EN
POR
VFB
L
2.2µH
C2
20µF
OUTPUT
1.8V TO 1.5A
R2
124k
*C3
220pF
R3
100k
SKIP
RSI
FIGURE 24. TYPICAL APPLICATION DIAGRAM
*C3 IS OPTIONAL TO IMPROVE
TRANSIENT RESPONSE. CHECK
LOOP BANDWIDTH BEFORE USE.
Block Diagram
SKIP
SOFT- START
SHUTDOWN
27pF
390k
SHUTDOWN
EN
VFB
POR
RSI
BANDGAP 0.8V EAMP
OSCILLATOR
+
COMP
+
PWM/PFM
LOGIC
CONTROLLER
PROTECTION
DRIVER
0.864V
+
+
0.736V
SLOP
SCCLOOOMEPMPEP
2ms
DELAY
+
OCP
+
CSA1
0.85V
+
SKIP
0.17V
ZERO - CROSS
SENSING
VIN
LX
GND
0.2V
SCP
+
FIGURE 25. FUNCTIONAL BLOCK DIAGRAM
9
FN6656.2
November 19, 2009
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