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ISL78234AARZ-T7A Datasheet(PDF) 5 Page - Renesas Technology Corp

Part # ISL78234AARZ-T7A
Description  3A and 4A Compact Synchronous Buck Regulators
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

ISL78234AARZ-T7A Datasheet(HTML) 5 Page - Renesas Technology Corp

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ISL78233, ISL78234
FN8359 Rev 8.00
Page 5 of 21
Apr 19, 2018
FIGURE 3. FUNCTIONAL BLOCK DIAGRAM
PHASE
+
+
CSA
+
+
OCP
SKIP
+
+
Slope
COMP
SLOPE
Soft
START
SOFT-
EAMP
COMP
PWM/PFM
LOGIC
CONTROLLER
PROTECTION
HS DRIVER
FB
+
0.85*VREF
PG
SYNC
SHUTDOWN
VIN
PGND
OSCILLATOR
ZERO-CROSS
SENSING
BANDGAP
SCP
+
0.5V
EN
SHUTDOWN
1ms
DELAY
55pF
100kΩ
SGND
3pF
6kΩ
-
-
-
-
-
-
-
VDD
COMP
100Ω
SHUTDOWN
LS
DRIVER
FS
ISET
THRESHOLD
VREF
NEG CURRENT
SENSING
P
N
+
0.8V
-
UV
OV
SS


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