1
PS7516
.
Description
The PS7516 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
0.08Ω N-channel MOSFET switch and 0.12Ω
P-channel synchronous rectifier. So no external
Schottky diode is required and could get better
efficiency near 93%.
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.
Features
High Efficiency up to 93%
Low R
DS
(ON) Integrated Power MOSFET
NMOS 80mΩ / PMOS120mΩ
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
PMOS Current Limit for Short Circuit Protection
Low Quiescent Current
Output Ripple under 200mV. (Scope Full
Bandwidth)
Fast Transient Response
Built-In Soft Start Function
Over-Temperature Protection with Auto Recovery
Output Overvoltage Protection
Space-Saving SOT-23-6 Package
Applications
Portable Power Bank
Wireless Equipment
Handheld Instrument
GPS Receiver
Pin Assignments
SOT -
23
-
6
2
1
3
6 4
5
LX
VIN
GND
OUT
EN
FB
Figure 1. Pin Assignment of PS7516
Functional Pin Description
Pin Name Pin No. Pin Function
EN 4 Logic Controlled Shutdown Input.
GND 2 Ground Pin.
LX 1 Power Switching Connection. Connect LX to the inductor and output rectifier.
VIN 6 Power Supply Input Pin.
OUT 5 Output of the Synchronous Rectifier.
FB 3 Voltage Feedback Input Pin.
1
PS7516
.
Description
The PS7516 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
0.08Ω N-channel MOSFET switch and 0.12Ω
P-channel synchronous rectifier. So no external
Schottky diode is required and could get better
efficiency near 93%.
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.
Features
High Efficiency up to 93%
Low R
DS
(ON) Integrated Power MOSFET
NMOS 80mΩ / PMOS120mΩ
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
PMOS Current Limit for Short Circuit Protection
Low Quiescent Current
Output Ripple under 200mV. (Scope Full
Bandwidth)
Fast Transient Response
Built-In Soft Start Function
Over-Temperature Protection with Auto Recovery
Output Overvoltage Protection
Space-Saving SOT-23-6 Package
Applications
Portable Power Bank
Wireless Equipment
Handheld Instrument
GPS Receiver
Pin Assignments
SOT -
23
-
6
2
1
3
6 4
5
LX
VIN
GND
OUT
EN
FB
Figure 1. Pin Assignment of PS7516
Functional Pin Description
Pin Name Pin No. Pin Function
EN 4 Logic Controlled Shutdown Input.
GND 2 Ground Pin.
LX 1 Power Switching Connection. Connect LX to the inductor and output rectifier.
VIN 6 Power Supply Input Pin.
OUT 5 Output of the Synchronous Rectifier.
FB 3 Voltage Feedback Input Pin.