s-8533a60aft-tb-g Seiko Instruments Inc., s-8533a60aft-tb-g Datasheet - Page 10
![no-image](/images/no-image-200.jpg)
s-8533a60aft-tb-g
Manufacturer Part Number
s-8533a60aft-tb-g
Description
Step-down, Synchronous Pwm Control Switching Regulator Controller
Manufacturer
Seiko Instruments Inc.
Datasheet
1.S-8533A60AFT-TB-G.pdf
(31 pages)
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10
STEP-DOWN, SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8533 Series
Though the conditions mentioned above are required to prevent back-flow current, they are guidelines. Check the
validity by measuring the prototype or the actual device.
−109 mA
109 mA
I
OUT
0 mA
I
L
Coil current under no load
V
Figure 10 Example for No Back-Flow Current
IN
C
IN
ΔI
Back-flow
current
L
I
I
L
L
Figure 9 Back-Flow Current
max.
min.
+
Seiko Instruments Inc.
VIN
Back-flow current
VSS
PDRV
NDRV
218 mA
109 mA
I
OUT
0 mA
Coil
current I
I
L
L
Coil current when 109 mA
flows as a load
L
+
V
Back-flow current = 0 mA
OUT
ΔI
L
I
I
L
L
max.
min.
Rev.2.3
_00
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