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FA3675F の電気的特性と機能

FA3675FのメーカーはFuji Electricです、この部品の機能は「For Switching Power Supply Control」です。


製品の詳細 ( Datasheet PDF )

部品番号 FA3675F
部品説明 For Switching Power Supply Control
メーカ Fuji Electric
ロゴ Fuji Electric ロゴ 




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FA3675F Datasheet, FA3675F PDF,ピン配置, 機能
FFAA36735F675F
s Description
FA3675F is a control IC for 6-channel DC-DC converter.
This IC can directly drive a Nch/Pch-MOSFET.
This IC is suitable to reduce converter size because it has
many functions in a small package LQFP-48.
s Features
• 6-channel PWM control with MOSFET direct driving :
5-channel for Pch-MOSFET, 1channel for Nch-MOSFET
• Low input voltage: 2.5V to 20V
±1.0% high accuracy bandgap reference
• Low power consumption by means of CDMOS
Standby mode: 20µA(max.)
Operating mode: 10mA(max.)
• Soft start function for each channel
• ON/OFF function for each channel
• Timer latch for short protection
• Undervoltage lockout
• Wide range of operation frequency: 50kHz to 1MHz
• Package: LQFP-48(Thin and small)
s Application
• VTR-camera, digital-steel-camera and portable equipment
CMOS IC
For Switching Power Supply Control
s Dimensions, mm
LQFP-48
9.0±0.3
7.0
36 25
1.45 max
0.10±0.06
1 12
0.5±0.1
0.2±0.06
0.127±0.05
0~7˚
122

1 Page





FA3675F pdf, ピン配列
FA3675F
Pin Pin
No. symbol
1 VCC1
2 RT
3 CT
4 CS3
5 CS5
6 CS4
7 CS1
8 CS2
9 VREF
10 CREF
11 VREG
12 IN2-
13 FB2
14 IN1-
15 FB1
16 IN5+
17 IN5-
18 FB5
19 IN6-
20 FB6
21 IN3+
22 IN3-
23 FB3
24 IN4+
Description
Power supply for control circuit
Oscillator timing resistor
Oscillator timing capacitor
Soft start for Ch. 3 & Ch. 4
Soft start for Ch. 6
Soft start for Ch. 5
Soft start for Ch. 1
Soft start for Ch. 2
Reference voltage output
Capacitor for reference voltage output
Regulated voltage output
Ch. 2 inverting input to error amplifier
Ch. 2 output of error amplifier
Ch. 1 inverting input to error amplifier
Ch. 1 output of error amplifier
Ch. 5 non-inverting input to error amplifier
Ch. 5 inverting input to error amplifier
Ch. 5 output of error amplifier
Ch. 6 inverting input to error amplifier
Ch. 6 output of error amplifier
Ch. 3 non-inverting input to error amplifier
Ch. 3 inverting input to error amplifier
Ch. 3 output of error amplifier
Ch. 4 non-inverting input to error amplifier
s Absolute maximum ratings
Item
Power supply voltage
Source peak current
Sink peak current
Input voltage for analog input
Input voltage for logic input
Total power dissipation *
Junction temperature
Ambient temperature
Storage temperature
* Ta < 25°C
s Recommended operating conditions
Item
Power supply voltage
Input voltage for logic input
Oscillation frequency
Oscillator timing resistor
Oscillator timing capacitor
CREF terminal by-pass capacitor
Vcc 5.0
Vcc > 5.0
Symbol
VCC
IOUT
IOUT
VANA
VLOG
Pd
TJ
TOP
Tstg
Symbol
VCC
VLOG
fOSC
RT
CT
CREF
Pin Pin
No. symbol
25 IN4-
26 FB4
27 CP
28 GND
29 TLSEL
30 CNT5
31 CNT4
32 CNT2
33 CNT3
34 CNT1
35 VCC2
36 VDRV
37 PGND1
38 OUT1S
39 OUT1
40 OUT4
41 OUT3
42 OUT2S
43 OUT2
44 OUT6S
45 OUT6
46 OUT5
47 OUT5S
48 PGND2
Description
Ch. 4 inverting input to error amplifier
Ch. 4 output of error amplifier
Timing capacitor for timer latch delay
Ground
Ch. 3 & Ch. 4 timer latch selection (Low: disable)
Ch. 6 ON/OFF function
Ch. 5 ON/OFF function
Ch. 2 ON/OFF function
Ch. 3 & Ch. 4 ON/OFF function
Ch. 1 ON/OFF function
Power supply for output stage
Bias for logic circuit of outputs
Power ground
Ch. 1 source electrode of output stage
Ch. 1 output (for Pch-MOSFET)
Ch. 4 output (for Pch-MOSFET)
Ch. 3 output (for Pch-MOSFET)
Ch. 2 source electrode of output stage
Ch. 2 output (for Pch-MOSFET)
Ch. 6 source electrode of output stage
Ch. 6 output (for Nch-MOSFET)
Ch. 5 output (for Pch-MOSFET)
Ch. 5 source electrode of output stage
Power ground
Rating
20.0
–200
200
–0.3 to +2.5
–0.3 to Vcc +0.5 (Vcc 5.0V)
–0.3 to +5.5 (Vcc > 5.0V)
550
125
–20 to +85
–40 to +150
Unit
V
mA
mA
V
V
mW
°C
°C
°C
Min.
2.5
0.0
0.0
50
6.8
22
0.01
Max.
18.0
Vcc +0.25
5.25
1000
100
1000
Unit
V
V
kHz
k
pF
µF
124


3Pages


FA3675F 電子部品, 半導体
s Characteristic curves (Ta = 25°C)
Oscillation frequency (fOSC) vs.
timing resistor resistance (RT)
1000
CT=29pF
56pF
100 100pF
500pF
10
10
RT [k]
100
Output duty cycle vs. CS terminal voltage (VCS)
100
90
80
70
60
50
40
30
20
10
0
0
0.2 0.4 0.6 0.8 1
Vcs [V]
1.2 1.4 1.6
Reference voltage (VREF) vs ambient temperatare (Ta)
1.06
1.04
1.02
1
0.98
0.96
20 0 20 40 60 80 100
Ta [°C]
FA3675F
Oscillation frequency (fOSC) vs.
ambient temperature (Ta)
520
500
480
460
440
420
400
20
0 20 40 60 80 100
Ta [°C]
Output duty cycle vs. FB terminal voltage (VFB)
100
90
80
70
60
50
40
30
20
10
0
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
VFB [V]
Supply current (Icc) vs supply voltage (Vcc)
CT=100pF, RT=10k
10
9
8
7
6 Duty cycle 60%
5
4 Duty cycle 0%
3
Duty cycle 100%
2
1
0
0 5 10 15 20
Vcc [V]
127

6 Page



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部品番号部品説明メーカ
FA3675F

For Switching Power Supply Control

Fuji Electric
Fuji Electric


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