MB39C313 Datasheet, PDF (7/52 Pages) Fujitsu Component Limited. – 4ch System Power Management IC for LCD Panel

MB39C313
■ BLOCK DIAGRAM
A
FBB
15
L priority
enb1
Error
Amp1
1.213 V
VTH
1.213 V ± 1.5%
VB REG
4V
PWM
COMP1
PW M
Logic
Control
<<Vlogic (Buck)>>
BOOT
(SWB + 4 V)
17
VINB
20 21
DRV
RON=230 mΩ
at VGS=4 V
SW B
18
0.9V
OSC_CTL
fosc or
fosc/2 or
fosc/4
Current
Limit
ILIM
COMP1
LEVEL
CONV
0.6V
Saw tooth
B
SCP COMP
VINB ^Generator
COMP
2
FB
1
L priority
Error
Amp2
OVP
COMP
SS
28
1.146 V
VTH
1.146 V ± 0.9%
18.7 V
<<Vs (Boost)>>
LEVEL
CONV
OS
3
RON=10 Ω
at VGS=-12 V
A
Vlogic (3.3 V/1.5 A Max)
B
Vs
(17.7 V / 1.5 A Max)
enb2
Saw tooth
Gener ator
AVIN
PWM
COMP2
PW M
Logic
Control
DRV
GD
1.03 V COMP
C
Current
Limit ILIM
COMP2
SW
45
RON=110 mΩ
at VGS=5 V
PGND
67
GD
27
FBN
13
Error
Amp3
VTH
enb3
D
0 V ± 36 mV
FBP
14
enb4
L priority _Error
Amp4
VTH
1.213 V ± 2.1%
<<VGL (Negative Charge Pump)>> AVIN
Current
Control
Logic
DRV
DRN
11
<<VGH (Positive Charge Pump)>>
Current
Control
Logic
DRV
SUP
8
DRP
10
C
VGL
(-5 V / 50 mA Max)
D
VGH
(32 V/50 mA Max)
FREQ
12
DLY1
25
DLY2
26
AVIN
22
VIN=12 V
OSC
DLY
COMP1
1.213 V
Vlogic
ss finish
DLY
COMP2
1.213 V
OTP
UVLO
L : UVLO
L:OTP
L:Protection
enb1
H:Vlogic ON
enb2
H:Vs ON
enb3
H:VGL ON
enb4
H:VGH ON
19
NC
VREF
Buffer
24
REF
1.213 V
BGR
Power
ON/OFF
CTL
23
GND
EN1
16
EN2
9
DS04–27267–1E
7