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ISL80019AIRZ-T7A Datasheet(PDF) 5 Page - Intersil Corporation

Part # ISL80019AIRZ-T7A
Description  Compact Synchronous Buck Regulators
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL80019AIRZ-T7A Datasheet(HTML) 5 Page - Intersil Corporation

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ISL8002, ISL8002A, ISL80019, ISL80019A
5
FN7888.1
January 7, 2013
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
SHUTDOWN
VIN
PGND
ZERO-CROSS
SENSING
SCP
+
0.3V
EN
SHUTDOWN
1ms
DELAY
27pF
200kΩ
3pF
6kΩ
-
-
-
-
-
-
-
COMP
100Ω
SHUTDOWN
VREF
NEG CURRENT
SENSING
P
N
+
-
UV
1.15*VREF
MODE
5MΩ
VIN
*
BANDGAP
*
Please see "COMP" pin in the “Pin Descriptions” table on
for more details.
FIGURE 3. FUNCTIONAL BLOCK DIAGRAM
OSCILLATOR
By default, when COMP is tied to VIN, the voltage loop is internally compensated with the 27pF and 200kΩ RC network.
OV
page 4


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