Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

MB39A103 Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers

Part # MB39A103
Description  4-Channel DC/DC Converter IC with Support for Low Voltage
PDF  4 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ETC [List of Unclassifed Manufacturers]
Direct Link  
Logo ETC - List of Unclassifed Manufacturers

MB39A103 Datasheet(HTML) 2 Page - List of Unclassifed Manufacturers

  MB39A103 Datasheet HTML 1Page - List of Unclassifed Manufacturers MB39A103 Datasheet HTML 2Page - List of Unclassifed Manufacturers MB39A103 Datasheet HTML 3Page - List of Unclassifed Manufacturers MB39A103 Datasheet HTML 4Page - List of Unclassifed Manufacturers  
Zoom Inzoom in Zoom Outzoom out
 2 / 4 page
background image
N
ew products
MB39A103
92
FIND Vol.20
No.2
2002
■ Reference voltage: 2.0V±1%
■ Error amplifier threshold voltage: 1.24V±1.5%
■ Built-in totem pole type output for MOS FET
■ Built-in load independent soft-start circuit
■ High frequency operation possible: 1MHz (Max.)
■ Short-circuit detection from external input is possible
with -INS terminal
■ Package: TSSOP-30P/BCC-32P
Circuit Configuration
Fig. 1
and 2 show the pin assignments, and Fig. 3 shows
the block diagram.
This product consists of function blocks described in the
following section.
DC/DC Converter Function
Reference Voltage Block (Ref)
The reference voltage circuit generates a temperature ―
compensated reference voltage (2.0V Typ.) using the voltage
supplied from power supply terminal, and it is used as the
reference voltage for the IC's internal circuit.
In addition, the reference voltage can be used to supply a
load current of up to 1mA to an external device via the
VREF terminal.
Triangular Wave Oscillator Block (OSC)
A triangular wave form with amplitude 0.4V to 0.9V is
generated from CT terminal by connecting capacitor and
resistor for timing on CT and RT terminals respectively.
The triangular wave oscillation waveform is input to the
PWM comparator in the IC.
Error Amplifier Block (Error Amp)
The error amplifier is an amplifier which detects the
DC/DC converter output voltage and outputs the PWM
control signal. Since optional loop gain can be specified through
connection of feedback resistor and capacitor to the inverted
input terminal from output terminal of the error amplifier, a
CS2
-INE2
FB2
DTC2
VCC
CTL
VREF
RT
CT
GND
CSCP
DTC3
FB3
-INE3
CS3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
CS1
-INE1
FB1
DTC1
VCCO
OUT1
OUT2
OUT3
OUT4
GNDO
-INS
DTC4
FB4
-INE4
CS4
（FPT-30P-M04）
（TOP VIEW）
Figure 1 Pin Assignments (TSSOP-30P)
DTC2
1
32
31
29
＜TOP VIEW (Transparent view from the surface)＞
（LCC-32P-M08）
28
30
27
26
VCC
2
CTL
3
VREF
4
RT
5
CT
6
GND
7
CSCP
8
N.C
DTC1
VCCO
OUT1
OUT2
OUT3
OUT4
GNDO
-INS
DTC4
910
11
12
13
14
15
16
25
24
23
22
21
20
19
18
17
Figure 2 Pin Assignments (BCC-32P)



Html Pages

1 2 3 4


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com