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PDF 39A126 Data sheet ( Hoja de datos )
| Número de pieza | 39A126 | |
| Descripción | MB39A126 | |
| Fabricantes | Fujitsu Component Limited | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de 39A126 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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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/
1 page  
www.DataSheet.co.kr
• MB39A126
−INC2
OUTC2
+INE2
−INE2
ACOK
VREF
ACIN
−INE1
+INE1
OUTC1
SEL
−INC1
MB39A125/126
(TOP VIEW)
1 24
2 23
3 22
4 21
5 20
6 19
7 18
8 17
9 16
10 15
11 14
12 13
(FPT-24P-M03)
+INC2
GND
CS
VCC
OUT
VH
XACOK
RT
−INE3
FB123
CTL
+INC1
(Continued)
5
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
MB39A125/126
■ BLOCK DIAGRAMS
• MB39A125
−INE1 8
OUTC1
+INC1
10
13
−INC1 12
<Current Amp1>
+
×20
−
+INE1 9
−INE2 4
OUTC2 2
+INC2 24
−INC2 1
<Current Amp2>
+
×20
−
+INE2 3
FB123 15
−INE3 16
OUTD 11
ACIN
7
<AC Comp.>
+
VREF
−
1.4 V
ACOK
5
XACOK
18
<Error Amp1>
−
+
<Error Amp2>
−
+
0.2 V <UV Comp.>
+
−INC1
(Vo)
−
<PWM Comp.>
+
−
<OUT>
Drive
21 VCC
20 OUT
<Error Amp3>
−
+
4.2 V
−2.5 V
−1.5 V
(VCC − 6 V) 19 VH
VH
Bias
Voltage
<UVLO>
VREF
UVLO
< SOFT>
VREF
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
11
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet 39A126.PDF ] | |
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