MB39A119 Datasheet PDF - Fujitsu
Part Number | MB39A119 | |
Description | DC/DC Converter IC | |
Manufacturers | Fujitsu | |
Logo | ||
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FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27247-1E
ASSP for Power Supply Applications (Secondary battery)
DC/DC Converter IC of Synchronous
Rectification for charging Li-ion battery
MB39A119
■ DESCRIPTION
The MB39A119 is the Nch MOS drive of the synchronous rectification type DC/DC converter IC using pulse-width
modulation (PWM) type that can charge Li-ion battery from 1 cell to 4 cells and suitable for down-conversion.
This IC integrates built-in comparator for the voltage detection of the AC adapter and switches the power supply
to the AC adapter or battery automatically, enabling supply it to system. In addition, the constant voltage control
state detection function is built in, which prevents mis-detecting the full charge. The MB39A119 provides a wide
range of power supply voltage and low standby current, high efficiency, making it ideal for use as a built-in charge
device in products such as notebook PC.
■ FEATURES
• High efficiency : 97 % (Max)
• High-frequency operation : 1 MHz (Max)
• Built-in off time control function
• Built-in voltage detection function of AC adapter (ACOK, XACOK terminal)
• Preventing mis-detection for the full charge by the constant voltage control state detection function (CVM
terminal)
■ PACKAGE
(Continued)
28-pin plastic QFN
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(LCC-28P-M10)
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MB39A119
■ BLOCK DIAGRAM
Hi Side Only
ACIN
4
ACOK
5
<AC Comp.>
+
−
2.0 V
XACOK
22
+INC1 3
−INC1 2
−INE1 8
+INE1 7
<Current Amp1>
+
×25
−
100 kΩ
3.1 V
<Error Amp1>
−
+
−INE2 13
OUTC2 9
<Current Amp2>
+INC2 10
−INC2 11
+
×24.5
−
+INE2 12
<Error Amp2>
−
+
FB123 14
CVM
6
<CV Comp.>
−
+
2.6 V
0.1 V <UV Comp.>
+
−
−INC2
(VO)
<PWM Comp.>
+
−
−2.5 V
−1.5 V
Off time
Control
H: UVLO, UV
release
VCC
1
5.0 V
VB Reg.
25 VB
258 CB
Drv-1
Drv-2
27 OUT-1
26 VS
24 OUT-2
23 PGND
−INE3 15
OUTD 16
<Error Amp3>
−
+
4.2 V
Slope
Control
<UVLO>
VCC-
UVLO
VB-
UVLO
VREF-
UVLO
<SOFT>
VREF
10 µA
CS 17
<Over Current Det.>
++
−
0.2 V
+INC2
−INC2
(Vo)
CT
2.6 V
+
−
OUTC2 +
0.3 V
−
VCC
<Synchronous Cnt.>
<OSC>
4.2 V
bias
<REF>
VREF
5.0 V
<CTL> DC/DC 21 CTL
ON/OFF
18 19 20
RT VREF GND
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for MB39A119 electronic component. |
Information | Total 59 Pages | |
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Download | [ MB39A119.PDF Datasheet ] |
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