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FP6716 PDF даташит

Спецификация FP6716 изготовлена ​​​​«Fiti» и имеет функцию, называемую «550KHz High Efficiency Low Ripple Synchronous Step-Up Converter».

Детали детали

Номер произв FP6716
Описание 550KHz High Efficiency Low Ripple Synchronous Step-Up Converter
Производители Fiti
логотип Fiti логотип 

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FP6716 Даташит, Описание, Даташиты
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
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FP6716 Даташит, Описание, Даташиты
Typical Application Circuit
VIN
2.5V to 5.5V
C1
22μF
C2
0.1μF
RILIM
OFF
L1
4.7μH
1 VIN
7
LX OUT 2
FP6716
5 ILIM
PG 8
D1
6 EN PGND GND FB 3
ON 9 4
C3 C4
22μF 0.1μF
FP6716
85T
VOUT
5V/3A
R1
525K
R2
100K
ILIM Resistance Value (MΩ)
0.5
1
2
4
8
Figure 2. Typical Application Circuit
Typical Input Limits (A)
8
4
2
1
0.5
Functional Pin Description
Pin Name
VIN
OUT
FB
GND
ILIM
EN
LX
PG
PGND
Pin No.
1
2
3
4
5
6
7
8
9
Pin Function
Power Supply Input Pin.
Output of the Synchronous Rectifier.
Voltage Feedback Input Pin.
Ground Pin. Connect GND to exposed pad.
Programming Input for Average Input Current.
Logic Controlled Shutdown Input.
Power Switching Connection. Connect LX to the inductor and output rectifier.
Power Good Indication Open Drain Pin.
Power Ground Pin.
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FP6716 Даташит, Описание, Даташиты
Block Diagram
VIN
LX
FP6716
85T
EN
ILIM
On/Off
Control
GM
ANTI-RING
PFM
Control
OSC
UVLO
VIN
PWM
Control
Logic
PMOS
NMOS
Isense/Current Limit
Ramp Generator
Body-Diode
Switch
Anti-Reverse
Comparator
COMP
Error
Amp
Bandgap
Reference
OUT
FB
PG GND
Figure 3. Block Diagram of FP6716
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