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PDF MB39A108 Data sheet ( Hoja de datos )
| Número de pieza | MB39A108 | |
| Descripción | 5-Channel DC/DC Converter IC | |
| Fabricantes | Fujitsu | |
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FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27237-1E
ASSP for Power Supply Applications
(DC/DC converter for DSC/camcorder)
5 ch DC/DC Converter IC with
Synchronous Rectification
MB39A108
■ DESCRIPTION
The MB39A108 is 5-channel DC/DC converter IC using pulse width modulation (PWM), and is suitable for up
conversion, down conversion, and up/down conversion. The MB39A108 is built in 5 channels into TSSOP-38P/
BCC-40P package and operates at 2 MHz maximum. Each channel can be controlled with soft-start.
The MB39A108 is suitable for power supply of high performance portable instruments such as DSC.
■ FEATURES
• Supports for down-conversion with synchronous rectification (CH1)
• Supports for down-conversion and up/down Zeta conversion (CH2, CH3)
• Supports for up-conversion and up/down Sepic conversion (CH4, CH5)
• Low voltage start-up (CH4, CH5) : 1.7 V
• Power supply voltage range
: 2.5 V to 11 V
• Reference voltage
: 2.0 V ± 1%
(Continued)
■ PACKAGES
38-pin plastic TSSOP
40-pin plastic BCC
(FPT-38P-M03)
www.DataSheet4U.com
(LCC-40P-M07)
www.DataSheet4U.com
1 page  
MB39A108
■ PIN DESCRIPTION
Block
CH1
CH2
CH3
CH4
CH5
OSC
Pin No.
PKG
Pin name I/O
Description
TSSOP BCC
36 33 FB1 O Error amplifier output terminal.
37 34 − INE1 I Error amplifier inverted input terminal.
38 35 CS1 ⎯ Soft-start setting capacitor connection terminal.
34
31
OUT1-1
O
Pch drive output terminal.
(External main side FET gate driving)
33
30
OUT1-2
O
Nch drive output terminal.
(External synchronous rectification side FET gate driving).
4 40 DTC2 I Dead time control terminal.
3 39 FB2 O Error amplifier output terminal
2 38 − INE2 I Error amplifier inverted input terminal.
1 37 CS2 ⎯ Soft-start setting capacitor connection terminal.
32 29 OUT2 O Pch drive output terminal.
16 12 DTC3 I Dead time control terminal.
17 13 FB3 O Error amplifier output terminal
18 14 − INE3 I Error amplifier inverted input terminal.
19 15 CS3 ⎯ Soft-start setting capacitor connection terminal.
31 28 OUT3 O Pch drive output terminal.
23 20 DTC4 I Dead time control terminal.
22 19 FB4 O Error amplifier output terminal.
21 18 − INE4 I Error amplifier inverted input terminal.
20 17 CS4 ⎯ Soft-start setting capacitor connection terminal.
30 27 OUT4 O Nch drive output terminal.
24 21 DTC5 I Dead time control terminal.
25 22 FB5 O Error amplifier output terminal.
26 23 − INE5 I Error amplifier inverted input terminal.
27 24 CS5 ⎯ Soft-start setting capacitor connection terminal.
29 26 OUT5 O Nch drive output terminal.
13
9
CT
⎯
Triangular wave frequency setting capacitor connection
terminal.
12 8 RT ⎯ Triangular wave frequency setting resistor connection terminal.
(Continued)
5
5 Page 
MB39A108
(VCC = VCCO = 4 V, Ta = + 25 °C)
Parameter
Symbol Pin No.
Conditions
Value
Unit
Min Typ Max
Threshold voltage
VTH1
VTH2
37
VCC = 2.5 V to 11 V
Ta = + 25 °C
0.990
1.000
1.010
V
37
VCC = 2.5 V to 11 V
Ta = 0 °C to + 85 °C
0.988
1.000
1.012
V
Temperature
stability
∆VTH/
VTH
37 Ta = 0 °C to + 85 °C ⎯
0.1*
⎯%
Input bias current
Error amp block Voltage gain
(CH1)
[Error Amp1] Frequency
bandwidth
IB
AV
BW
37 − INE1 = 0 V
36 DC
36 Av = 0 dB
− 120
⎯
⎯
− 30
100*
1.4*
⎯ nA
⎯ dB
⎯ MHz
VOH 36
Output voltage
VOL 36
⎯
1.7 1.9
⎯V
⎯ ⎯ 40 200 mV
Output source
current
ISOURCE
36 FB1 = 0.65 V
⎯ − 2 − 1 mA
Output sink
current
ISINK 36 FB1 = 0.65 V
150 200
⎯ µA
Threshold voltage
VTH1
VTH2
2, 18,
21, 26
2, 18,
21, 26
VCC = 2.5 V to 11 V
Ta = + 25 °C
VCC = 2.5 V to 11 V
Ta = 0 °C to + 85 °C
1.217
1.215
1.230
1.230
1.243
1.245
V
V
Temperature
stability
∆VTH/
VTH
2, 18,
21, 26
Ta = 0 °C to + 85 °C
⎯
0.1*
⎯%
Input bias current IB
2, 18, − INE2 to − INE5
21, 26 = 0 V
− 120 − 30
⎯
nA
Error amp block Voltage gain
(CH2 to CH5)
[Error Amp2 to Frequency
Error Amp5] bandwidth
AV
3, 17,
22, 25
DC
BW
3, 17,
22, 25
AV = 0 dB
⎯ 100* ⎯ dB
⎯ 1.4* ⎯ MHz
Output voltage
VOH
3, 17,
22, 25
VOL
3, 17,
22, 25
⎯
⎯
1.7 1.9
⎯V
⎯ 40 200 mV
Output source
current
ISOURCE
3, 17,
22, 25
FB2 to FB5 = 0.65 V
⎯
− 2 − 1 mA
Output sink
current
ISINK
3, 17,
22, 25
FB2 to FB5 = 0.65 V
150
200
⎯ µA
* : Standard design value
(Continued)
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MB39A108.PDF ] | |
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