ISL8012 Просмотр технического описания (PDF) - Intersil
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ISL8012 Datasheet PDF : 17 Pages
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Typical Application
INPUT 2.7V TO 5.5V
C1
2x10µF
R1
100k
ISL8012
VIN
LX
PGND
ISL8012
EN
SGND
PG
VFB
OUTPUT
L
1.8V/2A
C2
2x10µF
R2
124k
C3*
220pF
R3
100k
MODE
RSI
Block Diagram
FIGURE 1. TYPICAL APPLICATION DIAGRAM
MODE
EN
VFB
PG
RSI
SOFT-START
SHUTDOWN
BANDGAP 0.8V
EAMP
27pF
390k
OSCILLATOR
+
COMP
+
SHUTDOWN
PWM/PFM
LOGIC
CONTROLLER
PROTECTION
DRIVER
0.864V
+
+
0.736V
SLOPE
COMP
1ms
DELAY
+
OCP
+
CSA
1V
+
SKIP
0.25V
ZERO-CROSS
SENSING
SCP
0.2V +
FIGURE 2. FUNCTIONAL BLOCK DIAGRAM
3
*C3 is optional
VIN
LX
GND
December 1, 2011
FN6616.2
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