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Teilenummer | 39A126 |
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Beschreibung | MB39A126 | |
Hersteller | Fujitsu Component Limited | |
Logo | ||
Gesamt 30 Seiten www.DataSheet.co.kr
FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27248-1E
ASSP for Power Supply Applications (Secondary battery)
DC/DC Converter IC for Charging
Li-ion Battery
MB39A125/126
■ DESCRIPTION
MB39A125/126 is a DC/DC converter IC for charging Li-ion battery, which is suitable for down-conversion, and
uses pulse width modulation (PWM) for controlling the output voltage and current independently. This IC integrates
the build-in comparator for the voltage detection of the AC adapter, and selects the AC adapter or battery auto-
matically for power supply to the system.
Provides a wide range of power supply voltage, low standby current, and high efficiency, which makes them ideal
as a built-in charging device in products such as notebook PC.
■ FEATURES
• High efficiency : 97% (MAX)
• Built-in two constant current control circuits
• Analog control of the charging current value (+INE1, +INE2 terminal)
• Built-in AC adapter voltage detection function (ACOK, XACOK terminal)
■ PACKAGES
(Continued)
24-pin plastic SSOP
28-pin plastic QFN
(FPT-24P-M03)
(LCC-28P-M11)
Datasheet pdf - http://www.DataSheet4U.net/
www.DataSheet.co.kr
MB39A125/126
(Continued)
(TOP VIEW)
28 27 26 25 24 23 22
N.C.
GND
+INC2
N.C.
−INC2
OUTC2
+INE2
1
2
3
4
5
6
7
21 FB123
20 CTL
19 +INC1
18 N.C.
17 −INC1
16 SEL
15 N.C.
8 9 10 11 12 13 14
(LCC-28P-M11)
Note : Connect IC’s radiation board at bottom side to potential of GND.
6
Datasheet pdf - http://www.DataSheet4U.net/
6 Page www.DataSheet.co.kr
MB39A125/126
• MB39A126
−INE1 8
OUTC1 10
13
+INC1
−INC1 12
<Current Amp1>
+
×20
−
+INE1 9
−INE2 4
OUTC2 2
+INC2 24
−INC2 1
<Current Amp2>
+
×20
−
+INE2 3
FB123 15
−INE3 16
R1
R2
ACIN
7
<AC Comp.>
+
VREF
−
1.4 V
ACOK
5
XACOK
18
<Error Amp1>
−
+
<Error Amp2>
−
+
<Error Amp3>
−
+
4.2 V/3.15 V
0.2 V <UV Comp.>
+
−INC1
(Vo)
−
<PWM Comp.>
+
−
<OUT>
Drive
21 VCC
20 OUT
−2.5 V
−1.5 V
(VCC − 6 V) 19 VH
VH
Bias
Voltage
<UVLO>
VREF
UVLO
SEL 11
Hi : 4 Cells
Lo : 3 Cells
VREF
< SOFT>
10 µA
CS 22
Slope
Control
<OSC>
500 kHz Max
4.2 V
Bias
<REF>
CT
(45 pF)
VREF
5.0 V
17 6
RT VREF
VCC
<CTL>
23
GND
14 CTL
12
Datasheet pdf - http://www.DataSheet4U.net/
12 Page | ||
Seiten | Gesamt 30 Seiten | |
PDF Download | [ 39A126 Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
39A126 | MB39A126 | Fujitsu Component Limited |
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