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PDF FP6716 Data sheet ( Hoja de datos )
| Número de pieza | FP6716 | |
| Descripción | 550KHz High Efficiency Low Ripple Synchronous Step-Up Converter | |
| Fabricantes | Fiti | |
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FP6716
5V, 8A, 550KHz High Efficiency Low Ripp8l5eT
Synchronous Step-Up Converter
Description
The FP6716 is a high efficiency, fixed frequency
550KHz, current mode PWM boost DC/DC converter
which could operate battery such as input voltage
down to 2.5V. The converter output voltage can be
adjusted to a maximum of 5.25V by an external
resistor divider. Besides the converter includes a
0.05Ω N-channel MOSFET switch and 0.08Ω
P-channel synchronous rectifier. So no external
Schottky diode is required and could get better
efficiency near 90%.
The converter is based on a fixed frequency, current
mode, pulse-width-modulation PWM controller that
goes automatically into PSM mode at light load.
When converter operation into discontinuous mode,
the internal anti-ringing switch will reduce
interference and radiated electromagnetic energy.
The FP6716 is available in a space-saving SOP-8
(Exposed Pad) package for portable application.
Pin Assignments
SP Package (SOP-8 Exposed Pad)
VIN
OUT
FB
GND
18
297
3 PGND 6
45
PG
LX
EN
ILIM
Features
High Efficiency up to 90%
Low RDS(ON) Integrated Power MOSFET
NMOS 50mΩ/PMOS 80mΩ
Wide Input Voltage Range: 2.5V to 5.5V
Fixed 550KHz Switching Frequency
Low-Power Mode for Light Load Conditions
±2.0% Voltage Reference Accuracy
Adjustable Current Limit
PMOS Current Limit for Short Circuit Protection
Low Quiescent Current
Output Ripple under 200mV (Scope Full
Bandwidth)
Input Under Voltage Lockout
Internal Compensation Function
Built-In Soft Start Function
Over-Temperature Protection with Auto Recovery
Output Overvoltage Protection
SOP-8 (Exposed Pad) Pb-Free Package
Applications
Portable Power Bank
Wireless Equipment
Handheld Instrument
GPS Receiver
Ordering Information
FP6716□□□
TR: Tape/Reel
C: Green
Package Type
SP: SOP-8 (Exposed Pad)
Figure 1. Pin Assignment of FP6716
1
1 page  
Electrical Characteristics
(VIN=3.3V, TA=25°C, unless otherwise specified.)
Parameter
Symbol
Conditions
VIN Input Supply Voltage
VIN Supply Current (Switching)
VIN Supply Current (No witching)
Feedback Voltage
VIN
VIN=3.3V, VFB=0.7V
Measure VIN
VFB=1V
VFB 2.5V≦VIN≦5.5V
High-Side PMOSFET RDS(ON)
Low-Side NMOSFET RDS(ON)
High-Side MOSFET Leakage
Current
Low-Side MOSFET Leakage Current
ILX(leak)
VLX=5.5V, VOUT=0V
VLX=5.5V
Oscillation Frequency
FOSC
Short Circuit Trip Point
Monitored FB voltage
Short Circuit Current Limit
VIN = 3.3V
Maximum Duty Cycle
DMAX
VIN=3.3V
ILIM Current
RILIM=500K
ILIM Current Gain
Line Regulation
Load Regulation
VIN=3.3V
VIN=2.5V to 5.5V,
IOUT=100mA
IOUT=0A to 1A
Input UVLO Threshold
Under Voltage Lockout Threshold
Hysteresis
OVP Threshold Voltage on OUT Pin
VUVLO(VTH) VIN Rising
VUVLO(HYS) VIN Falling
OVP Threshold Hysteresis
Internal Soft-Start Time
Power Good Active
Power Good Hysteresis
Monitored FB,
with respect to VFB
PG Low Output
Sink 20mA
PG Leakage Current
PG=6.0V
EN Input Low Voltage
VEN (L)
EN Input High Voltage
VEN (H)
EN Input Current
IEN VIN=3.3V
FP6716
85T
Min Typ Max Unit
2.5 5.5 V
300 500
μA
30 μA
0.784 0.8 0.816
V
80 mΩ
50 mΩ
10 μA
10 μA
450 550 650 KHz
0.3 V
50 mA
90 %
8A
8A
8 MΩ-A/A
1%
0.5 %
2.3 V
300 mV
6V
500 mV
1 3 ms
90 %
5%
0.4 V
1 μA
0.4 V
1.4
2
V
μA
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet FP6716.PDF ] | |
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