PWM Converter. GS5805 Datasheet
1MHz Step-Up PWM Converter with a 5.5A Switch
The GS5805 is a current-mode boost DC/DC
converter with a 5.5A, 0.1Ω internal power
MOSFET to provide this regulator highly power
The GS5805 operates at 1MHz allowing for easy
filtering and low noise. Internal compensation
makes the user to set system easily, which allows
the use of small, low-ESR ceramic output
capacitors. Fault protection includes over-current
latch off, input UVLO and thermal shutdown. This
device uses current mode control scheme that
provides fast transient response. In shutdown
mode, the supply current is less than 1uA.
The GS5805 is available in an PSOP-8 package,
provides a very compact system solution and good
Adjustable Output Voltage up to 12V
Internal 0.1Ω, 5.5A, 18V Power MOSFET
Fixed 1MHz Switching Frequency
Current Mode Operation
12V Output at 1A from 5V Input
Cycle-by-Cycle current limit
Adjustable Over Current Protection
Input Under Voltage Lockout
Thermal Enhanced PSOP-8 Package
RoHS Compliant, 100%Pb & Halogen Free
Handheld Computers and PADs
Packages & Pin Assignments
Current Limit Setting Pin. Connect a resistor from OC to GND to set the peak
switching current. It can be left floating.
Power Supply Input Pin. Connecting a ceramic bypass capacitor between VIN
and GND to eliminate noise.
Enable Input Pin. This pin provides a digital control to turn the converter on or
off. Connect to VIN with a 100KΩ resistor for self-startup. EN cannot be left
Ground Pin. The exposed pad is connected to GND.
Voltage Feedback Input Pin. Connecting FB and VOUT with a resistive voltage
divider. This IC senses feedback voltage via FB and regulate it at 0.6V.
Power Switch Output. It is the output pin that internal MOSFET. Connect the
inductor and output rectifier to SW.
GS Complete P/N
Q’ty / Reel