MB39A103 Datasheet, PDF (5/33 Pages) List of Unclassifed Manufacturers – 4-Channel DC/DC Converter IC with Support for Low Voltage

MB39A103
■ BLOCK DIAGRAM
Threshold voltage
−INE1
29
10
accuracy ±1.5%
µAVREF
Error
− ^Amp1
CS1 30
++
1.24 V _{L priority}
FB1 28
DTC1 27
Threshold voltage
−INE2
2
10
accuracy
µAVREF
−
±1.5%
Error
Amp2
CS2 1
++
FB2 3
1.24 V
L priority
DTC2 4
Threshold voltage
accuracy ±1.5%
−INE3
14
10
µAVREF
Error
− ^Amp3
CS3 15
++
FB3 13
1.24 V
L priority
DTC3 12
Threshold voltage
−INE4
17
10
accuracy ±1.5%
µAVREF
Error
− ^Amp4
CS4 16
++
Short detection
signal
(L: at short)
FB4 ¹⁸
1.24 V
L priority
DTC4 ¹⁹
VREF
100 kΩ
SCP
Comp.
−INS 20
−
+
1V
SCP
L priority
PWM
++^Comp.1
−
CH1
Drive1
Pch
26 VCCO
25 OUT1
IO = 130 mA
at VCCO = 4 V
L priority
PWM
++^Comp.2
−
CH2
Drive2
Nch
24 OUT2
IO = 130 mA
at VCCO = 4 V
L priority
PWM
++^Comp.3
−
CH3
Drive3
Nch
23 OUT3
IO = 130 mA
at VCCO = 4 V
L priority
PWM
++^Comp.4
−
CH4
Drive4
Nch
22 OUT4
IO = 130 mA
at VCCO = 4 V
21 GNDO
H:
at SCP
Error Amp Power Supply
SCP Comp. Power Supply
CSCP 11
0.9 V
0.4 V
OSC
89
RT CT
5 VCC
UVLO2
bias
Error Amp Reference
1.24 V
UVLO1
Accuracy
±1%
VREF
Power
VR1 ^{ON/OFF 6 CTL}
CTL
H:UVLO
release ^{2.0 V}
7
H : ON (Power/ ON)
10
L : OFF (Standby mode)
VREF
GND
VTH = 1.4 V
5