MB39A214APFT-G-JNERE1 Datasheet, PDF (4/56 Pages) Fujitsu Component Limited. – 2ch DC/DC converter IC with PFM/ PWM synchronous rectification

MB39A214A
„ BLOCK DIAGRAM
VOUT1
VOUT1
FB1
CS1
ILIM1
EN1
VOUT2
VOUT2
FB2
CS2
VCC
<CH1>
/EN1
OTP
UVP
25 Ω
VB
1 µA
<Error Comp.>
VB
5 µA
/EN1
/UVLO(OTP)
4:1
Slope & Offset
REF1
(0.7 V)
<ILIM Comp.>
×1.0
EN1
EN2
VCC
tON
Generator
VB
5.2 V
R
Q
S
DRVH
DRV
Logic
DRVL
<IR Comp.>
VB
BST1
DRVH1
LX1
DRVL1
<OVP Comp.>
OVP1
REF1
× 1.15V
OVP2
<UVP Comp.>
UVP1
REF1
× 0.7 V
UVP2
LX1
×1.0
PGND
OVP latch OVP
(delay:15 µs)
UVP latch UVP
(delay:150 µs)
PGND
2 µA
FREQ
Select
450 kΩ
FREQ
EN
Logic
EN1
"H": Enable
<CH2>
VREF (0.7 V) REF1
2.5 V
REF2
EN2
UVLO
(VB)
UVLO
(VREF)
UVLO ^OTP
"H": UVLO
release
Thermal
Protection
2 µA
MODE
Select
450 kΩ
MODE
to CH2
BST2
DRVH2
LX2
DRVL2
ILIM2
EN2
GND
VIN
(6 V to 28 V
VOUT1
VOUT2
4
DS405-00007-1v0-E