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參數(shù)資料
| 型號(hào)： | MB3778PFV |
| 廠商： | FUJITSU LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 0.075 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, SSOP-16 |
| 文件頁數(shù)： | 3/29頁 |
| 文件大小： | 276K |
| 代理商： | MB3778PFV |
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MB3778
3
I
PIN DESCRIPTION
No.
Pin
Function
1
C
T
Oscillator timing capacitor terminal (150 pF to 15,000 pF) .
Oscillator timing resistor terminal (5.1 k
to 100 k
) .
V
REF
×
1/2 voltage is also available at this pin for error amplifier reference input.
Error amplifier 1 non-inverted input terminal.
2
R
T
3
+
IN1
IN1
4
Error amplifier 1 inverted input terminal.
5
FB1
Error amplifier 1 output terminal.
A resistor and a capacitor are connected between this terminal and the
IN1 terminal to ad-
just gain and frequency.
6
DTC1
OUT1 dead-time control terminal.
Dead-time control is adjusted by an external resistive divider connected to the V
REF
pin.
A capacitor connected between this terminal and GND enables soft-start operation.
7
OUT1
Open collector output terminal.
Output transistor has common ground independent of signal ground.
This output can source or sink up to 50 mA.
8
E/GND Ground terminal.
9
V
CC
Power supply terminal (3.6 to 18 V)
10
OUT2
Open collector output terminal.
Output transistor has common ground independent of signal ground.
This output can source or sink up to 50 mA.
11
DTC2
Sets the dead-time of OUT2.
The use of this terminal is the same as that of DTC1.
12
FB2
Error amplifier 2 output terminal.
Sets the gain and adjusts the frequency when a resistor and a capacitor are connected be-
tween this terminal and the
IN2 terminal.
Voltage of V
REF
×
1/2 voltage is internally connected to the non-inverted input of error amplifier
2. Uses error amplifier 2 for positive voltage output.
13
IN2
Error amplifier 2 inverted input terminal.
14
CTL
Power control terminal.
The IC is set in the stand-by state when this terminal is set “Low.”
Current consumption is 10
μ
A or lower in the stand-by state.
The input can be driven by TTL or CMOS.
15
SCP
The time constant setting capacitor connection terminal of the timer latch short-circuit protec-
tion circuit.
Connects a capacitor between this pin and GND.
For details, see “How to set time constant for timer latch short-circuit protection circuit”.
16
V
REF
2.46 V reference voltage output terminal which can be obtained up to 1 mA.
This pin is used to set the reference input and idle period of the error amplifiers.
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| MB3778PFV-E1 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:Switching Regulator Controller |
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