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HA17451AFP Datasheet(PDF) 13 Page - Hitachi Semiconductor

Part # HA17451AFP
Description  Switching Regulator Controllers for DC/DC Converters
PDF  15 Pages
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Manufacturer  HITACHI [Hitachi Semiconductor]
Direct Link  http://www.renesas.com/eng
Logo HITACHI - Hitachi Semiconductor

HA17451AFP Datasheet(HTML) 13 Page - Hitachi Semiconductor

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HA17451AP/HA17451AFP
13
Precautions
Precaution concerning inverting (negative voltage) output
Conditions
Circuit diagram
R + R >
|V
| V
18
µA
OUT
To prevent leakage current in the IC from interfering
with stable and efficient operation, choose R and R
values that satisfy the following condition:
where, R , R :
|V
|:
18
µA:
Feedback voltage resistors
Absolute value of negative output voltage
Minimum current with negative voltage
at reference voltage pin; I
(min)
OUT
V
IN
V
CC
OUT
–VOUT
–
+
R
R
Vref
Iref
Iref
INV. INPUT
HA17451A
Negative
DC output
I
(min)
OR
–0.2 V
0 V
Vref
OR
18
µA
2
1
12
1
2
12



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