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8014IRZ 데이터 시트보기 (PDF) - Renesas Electronics
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8014IRZ
4A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator
Renesas Electronics
8014IRZ Datasheet PDF : 17 Pages
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ISL8014
Typical Application
INPUT 2.7V TO 5.5V
C1
2 x 22µF
R1
100k
VIN
LX
VDD
PGND
ISL8014
L
1.5µH
OUTPUT
1.8V
C2
2 x 22µF
R2
124k
C3
47pF
PG
VFB
R3
EN
100k
SYNCH
SGND
FIGURE 1. TYPICAL APPLICATION DIAGRAM
Block Diagram
SYNCH
SOSoFfTt
SHUTDOWNSTART
-
EN
BANDGAP
0.8V
EAMP
-
3pF
VFB
27pF
390k
OSCILLATOR
+
COMP
-
+
SHUTDOWN
PWM/PFM
LOGIC
CONTROLLER
PROTECTION
DRIVER
6k
SLSOloPpEe
COMP
PG
SGND
+
0.736V
-
1ms
DELAY
+
OCP
-
+
CSA
-
1.4V
+
SKIP-
0.5V
ZERO-CROSS
SENSING
-
0.2V
SCP
+
FIGURE 2. FUNCTIONAL BLOCK DIAGRAM
VIN
LX
PGND
FN6576 Rev 4.00
November 23, 2009
Page 3 of 17
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