BD9A300MUV
(2) Enable Control
The IC shutdown can be controlled by the voltage applied to the EN terminal. When VEN reaches 2.0V (Typ), the
internal circuit is activated and the IC starts up. To enable shutdown control with the EN terminal, the shutdown
interval(Low level interval of EN) must be set to 100µs or longer.
VEN
EN terminal
VENH
VENL
0
t
VOUT
Output setting voltage
0
t
Soft start 1 msec
(Typ)
Figure 44. Start Up and Down with Enable
(3) Power Good
When the output voltage reaches outside ±10% of the voltage setting, the open drain N-ch MOSFET internally
connected to the PGD terminal turns on and the PGD terminal is pulled down with an impedance of 100Ω(Typ). A
hysteresis of 3% applies to resetting. Connecting a pull up resistor (10kΩ to 100kΩ) is recommended.
+10%
+7%
VOUT
-7%
-10%
PGD
Figure 45. PGD Timing Chart
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TSZ02201-0J3J0AJ00350-1-2
30.Jun.2017 Rev.003
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