HA16108FP HITACHI [Hitachi Semiconductor], HA16108FP Datasheet - Page 13

• Manufacturer Part Number: HA16108FP
• Description: PWM Switching Regulator for High-performance Voltage Mode Control
• Manufacturer: HITACHI [Hitachi Semiconductor]

2. Use of ON/OFF Timer Pin (HA16108)
t
t
Notes: 1.
External Circuit
ON/OFF Timer Operation
ON
OFF
(0.9
C
2.
3.
4.
4 A
C is the capacitance of an external timing capacitor connected between this pin and ground.
Du is the ON-duty of the PWM output when overcurrent limiting is triggered.
The values of t
the ON/OFF timer, except that 5.8 V (V
If the timer goes off during soft start or in the undervoltage lockout region, after recovery,
output will come on after the soft-start time or after the rise time to the undervoltage lockout
release point, which is determined by the time constant.
5.8 V
Du)
C
5.8 V
16 A
7.0 V
1.2 V
0 V
ON
4 A
and t
OCL detected
(PWM output on)
+
V
V
THH
THL
OFF
IOFF
ION
for TL can be determined by the same equations as given for
Pulse-by-pulse current limiting
16
THH
PWM
output
shut down
16 A
4 A
t
OFF
V
from CML
THL
) becomes V
t
HA16107P/FP, HA16108P/FP
OVP with
latch timer
ON
OCL detected
(PWM output on)
HA16108
THH
t
= 7 V.
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