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110RKI80 FAN8001 D78F9418 TC0207A C20DT 34830A SOZA163 CTS02M
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 45V Input Buck Converter 3ch/2ch IC with Power MOSFET a is our message
FA7726/7730
3ch-IC Brock Diagram and application example 3ch-IC Brock Diagram and application example
RT REG 3 FB1 IN1VIN1 FB2 IN2VIN2 FB3 IN3VIN3 E.A.3
PW M Comp.3
Features Features
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
OSC
VREG5 3V VREG3
VREF
5V
REG 5
Vin = 10 to 45V
VCC
E.A.1
PW M Com p.1
PVCC1
Dead Time
P
1V
Current Lim it
OUT1
N
VO1(5V/ 1.2A)
VIN1 pin
PGND1 PVCC2
E.A.2
PW M Comp.2
UVLO
Dead Time
1V
Current Limit
P
OUT2
N
VO2(3.3V/ 1.2A)
VIN2 pin
PG ND2 PVCC3
UVLO
*
Dead Time
1V
Current Limit
P
OUT3
N
VO3(1.5V/ 1.2A
VIN3 pin
PGND3
Brief Specification Brief Specification
Characteristics
3ch FA7726F 2ch FA7730F 10 to 45V 5.0V,1.5V Selectable 5.0V/1.2A 1.2A Output 3.3V/1.2A 1.5V/1.2A 3.3V/1.2A 40k to 200kHz -20 to 150 degree
UVLO
CS1
ch1
CS2 CS3
Soft Start
UVLO
ch2 ch3 ch1
Current Lim it
ch2 ch3
Item
Input Voltage Range
CP
UVLO_ L
UVLO_ H
FB Detection
S R
Q
SCP
DC Output Voltage / Current Switching Frequency
OTP(OHP)
OHP
G ND
Junction Temperature
45V Input Buck Converter 3ch/2ch IC with Power MOSFET a is our message
FA7726/7730
90
DC-to-DC Converter Data DC-to-DC Converter Data
DC/DC 3 Outputs Condition
FA7726 Efficiency
Input Voltage vs. Efficiency
5V/1.2A 1.5V/0.8A 3.3V/0.8A fosc=40kHz fosc=60kHz fosc=80kHz fosc=100kHz fosc=120kHz
85
80 Efficiency [%]
fosc=140kHz fosc=160kHz fosc=180kHz fosc=200kHz
75
70
65
60 5 10 15 20 25 30 35 40 45 50 55 DC input voltage [V]


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