Converter IC. MB39A123 Datasheet

MB39A123 IC. Datasheet pdf. Equivalent

Part MB39A123
Description 6-ch DC/DC Converter IC
Feature MB39A123 6 ch DC/DC Converter IC with Synchronous Rectification Datasheet Description MB39A123 is .
Manufacture Cypress
Datasheet
Download MB39A123 Datasheet



MB39A123
MB39A123
6 ch DC/DC Converter IC with
Synchronous Rectification Datasheet
Description
MB39A123 is a 6-channel DC/DC converter IC using pulse width modulation (PWM) , and it is suitable for up conversion, down
conversion, and up/down conversion. MB39A123 is built in 6 channels into LQFP-48P package and this IC can control and soft-start
at each channel. MB39A123 is suitable for power supply of high performance potable instruments such as a digital still camera (DSC).
Features
Supports for step-down with synchronous rectification (ch.1)
Supports for step-down and up/down Zeta conversion (ch.2 to
ch.4)
Supports for step-up and up/down Sepic conversion (ch.5,
ch.6)
Negative voltage output (Inverting amplifier) (ch.4)
Low voltage start-up (ch.5, ch.6) : 1.7 V
Power supply voltage range : 2.5 V to 11 V
Reference voltage : 2.0 V 1%
Error amplifier reference voltage : 1.0 V 1% (ch.1) , 1.23 V ±
1% (ch.2 to ch.6)
Oscillation frequency range : 200 kHz to 2.0 MHz
Standby current : 0 A (Typ)
Built-in soft-start circuit independent of loads
Built-in totem-pole type output for MOS FET
Short-circuit detection capability by external signal (INS
terminal)
Package : LQFP-48 pin
Applications
Digital still camera (DSC)
Digital video camera (DVC)
Surveillance camera etc.
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 002-08367 Rev. *C
• San Jose, CA 95134-1709 • 408-943-2600
Revised January 22, 2019



MB39A123
MB39A123
Block Diagram
VIN
(5 V-11 V)
Step-down
(Synchronous
Rectification)
A
-INE1 38
L priority
VREF
Error
CS1
39
1.1 μA
- Amp1
+
+
FB1 37
(1.0 V)
PWM
Comp.1
+
-
<<ch.1>>
Io = 300 mA
at VCCO = 7 V
Drive1-1
P-ch
VCCO
36
OUT1-1
35
A
Vo1
(1.2 V)
Reference voltage
1.0 V ± 1 %
Drive1-2
N-ch
OUT1-2
34
Dead Time
(td = 50 ns)
Io = 300 mA
at VCCO = 7 V
Step-down
B
B
-INE2 41
L priority
VREF
Error
Max Duty VREF L priority
<<ch.2>>
CS2
40
1.1 μA
Amp2
-
+
+
92 % ± 5 %
PWM
Comp.2
++
-
Drive2
P-ch
OUT2
33
Vo2
(2.5 V)
FB2 42
DTC2 43
1.23 V
Reference voltage
1.23 V ± 1 %
Io = 300 mA
at VCCO = 7 V
Step-down
C
C
-INE3 46
L priority
VREF
Error
Max Duty VREF L priority
<<ch.3>>
CS3 47
1.1 μA
Amp3
-
++
92 % ± 5 %
PWM
Comp.3
+
+
-
Drive3
P-ch
OUT3
32
FB3 45
DTC3 44
1.23 V
Reference voltage
1.23 V ± 1 %
Io = 300 mA
at VCCO = 7 V
Vo3
(3.3 V)
D
-INA 19
-
<<ch.4>>
+
OUTA
18
INVAmp
Inverting
D
-INE4
16
CS4 17
L priority
VREF
1.1 μA
Error
Amp4
-
+
+
Max Duty VREF L priority
92 % ± 5 %
PWM
Comp.4
+
+
-
Drive4
P-ch
OUT4
31
Vo4
(-7.5 V)
1.23 V
FB4 15
DTC4
14
Reference voltage
1.23 V ± 1 %
Io = 300 mA
at VCCO = 7 V
Step-up
E
21
-INE5
L priority
VREF
Error
Max Duty VREF L priority
<<ch.5>>
CS5 20
1.1 μA
Amp5
-
++
92 % ± 5 %
PWM
Comp.5
+
+
-
Drive5
N-ch
OUT5
30
E
Vo5
(15 V)
1.23 V
FB5 22
DTC5 23
Reference voltage
1.23 V ± 1 %
Io = 300 mA
at VCCO = 7 V
F
Transformer
F
-INE6 26
L priority
VREF
Error
Max Duty VREF L priority
<<ch.6>>
CS6 27
1.1 μA
- Amp6
+
+
92 % ± 5 %
PWM
Comp.6
+
+
-
Drive6
N-ch
OUT6
29
Vo6-1
(15 V)
Vo6-2
(5.0 V)
FB6 25
DTC6 24
1.23 V
Reference voltage
1.23 V ± 1 %
Io = 300 mA
at VCCO = 7 V
28 GNDO
Short-circuit
detection signal
(L: at short-circuit)
Charge current
1 μA
-INS
8
CSCP
13
H:ON
L:OFF
VTH = 1.0 V
CTL1
CTL2
CTL3
CTL4
CTL5
CTL6
2
3
4
5
6
7
CHCTL
VREF
SCP
- Comp.
1V +
SCP
H:at SCP
0.9 V
0.4 V
OSC
H:UVLO release
UVLO1
UVLO2
bias
Error Amp power supply
SCP Comp. power supply
Error Amp
reference
1.0 V/1.23 V
VCC
48
VREF
VR
Power
ON/OFF
1 CTL
CTL
11 12
RT CT
Precision ± 0.5 %
(2.0 MHz)
2.0 V
Precision
± 0.8 %
9
VREF
10
GND
Precision
±1 %
H:ON (Power ON)
L:OFF(Standby mode)
VTH = 1.0 V
<< 48 Pin >>
PKG:LQFP-48 P
Document Number: 002-08367 Rev. *C
Page 2 of 37





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