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參數(shù)資料
| 型號： | MB39A104 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 2-ch DC/DC Converter IC |
| 中文描述： | 2通道直流/直流轉(zhuǎn)換器集成電路 |
| 文件頁數(shù)： | 3/36頁 |
| 文件大小： | 380K |
| 代理商： | MB39A104 |
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MB39A104
3
I
PIN DESCRIPTION
Pin No.
Symbol
I/O
O
Descriptions
1
VCCO
Output circuit power supply terminal (Connect to same potential as VCC pin.)
Power supply terminal for FET drive circuit (VH
=
V
CC
5 V)
External Pch MOS FET gate drive terminal
2
VH
3
OUT1
O
4
VS1
I
Overcurrent protection circuit input terminal
5
ILIM1
I
Overcurrent protection circuit detection resistor connection terminal. Set
overcurrent detection reference voltage depending on external resistor and
internal current resource (110
μ
A at RT
=
24 k
)
PWM comparator block (PWM) input terminal. Compares the lowest voltage
among FB1 and DTC terminals with triangular wave and controls output.
6
DTC1
I
7
VCC
Power supply terminal for reference power supply and control circuit
(Connect to same potential as the VCCO terminal)
8
CSCP
O
Timer-latch short-circuit protection capacitor connection terminal
9
FB1
INE1
CS1
Error amplifier (Error Amp 1) output terminal
10
I
Error amplifier (Error Amp 1) inverted input terminal
11
I
Soft-start capacitor connection terminal
12
RT
Triangular wave oscillation frequency setting resistor connection terminal
13
CT
Triangular wave oscillation frequency setting capacitor connection terminal
14
CS2
INE2
FB2
Soft-start capacitor connection terminal
15
Error amplifier (Error Amp 2) inverted input terminal
16
O
Error amplifier (Error Amp 2) output terminal
17
VREF
O
Reference voltage output terminal
18
GND
Output circuit ground terminal (Connect to same potential as GNDO
terminal.)
19
DTC2
I
PWM comparator block (PWM) input terminal. Compares the lowest voltage
among FB2 and DTC terminals with triangular wave and controls output.
20
ILIM2
I
Overcurrent protection circit detection resistor connection terminal. Set
overcurrent detection reference voltage depending on external resistor and
internal current resource (110
μ
A at RT
=
24 k
)
Overcurrent protection circuit input terminal
21
VS2
I
22
OUT2
O
External Pch MOS FET gate drive terminal
23
GNDO
Output circuit ground terminal (Connect to same potential as GND terminal.)
24
CTL
I
Power supply control terminal. Setting the CTL terminal at “L” level places IC
in the standby mode.
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