Wide Input Voltage Range: 2 5V to 5.5V
The PS7516 is a high efficiency, fixed frequency
1MHz, current mode PWM boost DC/DC converter
which could operate battery such as input voltage
down to 1.9V. The converter output voltage can be
adjusted to a maximum of 5.25V by an external
resistor divider. Besides the converter includes a
0.08Ω N-channel MOSFET switch and 0.12Ω
P-channel synchronous rectifier. So no external
Schottky diode is required and could get better
efficiency near 936%.
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 PS7516 is available in a space-saving SOT-23-6
package for portable application.
High Efficiency up to 96% (When Vin = 4.2V)
Low RDS(ON) Integrated Power MOSFET
NMOS 80mΩ / PMOS120mΩ
Wide Input Voltage Range: 1.9V to 5.5V
Fixed 1MHz Switching Frequency
Low-Power Mode for Light Load Conditions
±2.0% Voltage Reference Accuracy
PMOS Current Limit for Short Circuit Protection
Low Quiescent Current
Output Ripple under 200mV. (Scope Full
Fast Transient Response
Built-In Soft Start Function
Over-Temperature Protection with Auto Recovery
Output Overvoltage Protection
Space-Saving SOT-23-6 Package
Portable Power Bank
IN OUT EN
LX GND FB
Figure 1. Pin Assignment of PS7516
Functional Pin Description
Power Switching Connection. Connect LX to the inductor and output rectifier.
Voltage Feedback Input Pin.
Logic Controlled Shutdown Input.
5 Output of the Synchronous Rectifier.
6 Power Supply Input Pin.