MB3778P Fujitsu Microelectronics, Inc., MB3778P Datasheet - Page 9

• Manufacturer Part Number: MB3778P
• Description: Switching Regulator Controller
• Manufacturer: Fujitsu Microelectronics, Inc.

Triangular waveform oscillator output
Short circuit protection
comparator Reference
input
Dead Time, PWM input
voltage
Error Amp. output
PWM comparator
output
Output Transistor
collector waveform
S.C.P. Terminal
waveform
Short circuit protection
comparator output
Control Terminal
voltage
Power supply voltage
TEST CIRCUIT
TIMING CHART (Internal Waveform)
(V
(V
CTL
CC
SW
: Min. Value)
: Min. Value)
330 pF
0.65 V
0.05 V
"High"
"High"
"High"
"Low"
"Low"
"Low"
2.1 V
1.9 V
1.6 V
1.3 V
2.1 V
3.6 V
C
0 V
0 V
PE
16
1
15
2
15 k
CTL
14
3
TEST
TEST
MB3778
13
4
Power “ON”
12
5
INPUT
INPUT
11
6
10
7
V
CC
9
8
4.7 k
4.7 k
6 V
Protection Enable Time t
OUTPUT 1
OUTPUT 2
Power “OFF”
t
PE
PE
DEAD TIME 100%
0.6
MB3778
10
6
C
PE
( s)
9