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FP6791C Datasheet(PDF) 2 Page - Fitipower Integrated Technology Inc.

Part # FP6791C
Description  PWM Boost DC-DC Controller
PDF  13 Pages
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Manufacturer  FITIPOWER [Fitipower Integrated Technology Inc.]
Direct Link  http://www.fitipower.com/en_US/index.asp
Logo FITIPOWER - Fitipower Integrated Technology Inc.

FP6791C Datasheet(HTML) 2 Page - Fitipower Integrated Technology Inc.

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FP6791C-1.1-FEB-2012
FP6791C
85T
fitipower integrated technology lnc.
Typical Application Circuit
L1
M1
FP6791C
VIN
D1
VIN
EXT
VSS
RDUTY
ROSC
FB
CIN
CF
RFB1
RFB2
COUT
VOUT
RDUTY
ROSC
CZ
RZ
cc
CSP
CSP
Figure 2. Typical Application Circuit of FP6791C
External Parts List:
Element Name
Symbol
Application1 :
VIN=5V,VOUT=12V,
Fequency~700kHz
Application2 :
VIN=3.3V, VOUT=10.5V
Frequency~1.1MHz
Inductor
L1
4.7
μH, TDK
10
μH, TDK
Diode
D1
Schottky Diode
Schottky Diode
Output Capacitor
COUT
40
μF
10
μF
Transistor
M1
Power MOS
Power MOS
Oscillation Frequency Setting Resistor
ROSC
180kΩ±1% resistor
120kΩ±1% resistor
Maximum Duty Ratio Setting Resistor
RDUTY
220kΩ±1% resistor
110kΩ±1% resistor
Short-Circuit
Protection
Delay
Setting
Capacitor
CSP
0.1
μF ceramic capacitor
0.1
μF ceramic capacitor
Output Voltage Setting Resistor1
RFB1
8.2kΩ±1% resistor
6.8kΩ±1% resistor
Output Voltage Setting Resistor2
RFB2
750Ω±1% resistor
715Ω±1% resistor
FB Pin Capacitor
CFB
2.2nF ceramic capacitor
1nF ceramic capacitor
Phase Compensation Resistor
RZ
56kΩ±1% resistor
100kΩ±1% resistor
Phase Compensation Capacitor
CZ
10nF ceramic capacitor
10nF ceramic capacitor
Input Capacitor
CIN
10
μF ceramic capacitor
10
μF ceramic capacitor



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