FA7730 [FUJI]
45V Input Buck Converter 3ch/2ch IC with Power MOSFET; 45V输入降压型转换器3通道/ 2通道IC与功率MOSFET
| 型号： | FA7730 |
| 厂家： | 
FUJI ELECTRIC |
| 描述： | 45V Input Buck Converter 3ch/2ch IC with Power MOSFET |
| 文件： | 总2页 (文件大小：216K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
45V Input Buck Converter 3ch/2ch IC with Power MOSFETＱｕaｌｉｔｙ is our message
Features
FA7726/7730
1. Wide Input Voltage Range : 10 to 45V
2. 75 to 85% High Efficiency is achieved by
using internal power MOSFETs with
synchronized rectifier.
3. Low Operating Current : 3.5mA
4. Protection : Current Limit of power MOSFET,
Each channel soft start, Timer Latched
Protection for Short Current and Over
Temperature
3ch-IC Brock Diagram and application example
RT
OSC
REG5
VCC
5V
VREG5
Vin = 10 to 45V
VO1(5V/1.2A)
REG3
3V
VREF
VREG3
FB1
IN1-
E.A.1
E.A.2
PW M
Comp.1
PVCC1
VIN1
P
1V
OUT1
FB2
PGND1
PVCC2
IN2-
N
P
PW M
Comp.2
UVLO
VIN1 pin
VIN2
1V
1V
VO2(3.3V/1.2A)
OUT2
FB3
PGND2
N
P
IN3-
PW M
Comp.3
UVLO
VIN2 pin
E.A.3
PVCC3
VIN3
VO3(1.5V/1.2A）
OUT3
Brief Specification
PGND3
N
UVLO
VIN3 pin
CS1
CS2
CS3
Characteristics
ch1
ch2
Item
Current
Limit
UVLO
Soft
Start
ch3
3ch FA7726F
2ch FA7730F
UVLO_ L
UVLO_ H
FB
Detection
Input Voltage Range
10 to 45V
5.0V,1.5V Selectable
CP
5.0V/1.2A
3.3V/1.2A
S
R
Q
SCP
DC Output
1.2A Output
Voltage / Current
OHP
OTP(OHP)
1.5V/1.2A
3.3V/1.2A
Switching Frequency
Junction Temperature
40k to 200kHz
GND
-20 to 150 degree
45V Input Buck Converter 3ch/2ch IC with Power MOSFETＱｕaｌｉｔｙ is our message
DC-to-DC Converter Data
FA7726/7730
DC/DC 3 Outputs Condition
5V/1.2A
1.5V/0.8A
3.3V/0.8A
FA7726 Efficiency
Input Voltage vs. Efficiency
90
85
80
75
70
65
60
fosc=40kHz
fosc=60kHz
fosc=80kHz
fosc=100kHz
fosc=120kHz
fosc=140kHz
fosc=160kHz
fosc=180kHz
fosc=200kHz
5
10
15
20
25
30
35
40
45
50
55
DC input voltage [V]
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