fitipower integrated technology lnc.
5V, 3.1A, 550KHz High Efficiency Low Ripple
Synchronous Step-Up Converter
The FP6717 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
39mΩ N-channel MOSFET switch and
42mΩP-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 FP6717 is available in a space-saving SOP-8
(Exposed Pad) package for portable application.
High Efficiency up to 90%
Low RDS(ON) Integrated Power MOSFET
NMOS 39mΩ/PMOS 42mΩ
Wide Input Voltage Range: 2.5V to 5.25V
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
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
Portable Power Bank
SP Package (SOP-8 Exposed Pad)
SP: SOP-8 (Exposed Pad)
Figure 1. Pin Assignment of FP6717