PWM Converter. GS5805 Datasheet

GS5805 Converter. Datasheet pdf. Equivalent

Part GS5805
Description 1MHz Step-Up PWM Converter
Feature GS5805 1MHz Step-Up PWM Converter with a 5.5A Switch Product Description The GS5805 is a current-mo.
Manufacture Globaltech
Datasheet
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GS5805 1MHz Step-Up PWM Converter with a 5.5A Switch Produc GS5805 Datasheet
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GS5805
GS5805
1MHz Step-Up PWM Converter with a 5.5A Switch
Product Description
The GS5805 is a current-mode boost DC/DC
converter with a 5.5A, 0.1internal power
MOSFET to provide this regulator highly power
efficient.
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
thermal conductance.
Features
Adjustable Output Voltage up to 12V
Internal 0.1, 5.5A, 18V Power MOSFET
Internal Soft-Start
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
Over-Temperature Protection
Thermal Enhanced PSOP-8 Package
RoHS Compliant, 100%Pb & Halogen Free
Applications
LCD Displays
Chargers
Portable Products
Digital Cameras
Handheld Computers and PADs
Block Diagram
VIN UVLO
EN
Shutdown
Control
FB
-
Error
Amplifier
0.6V +
GND
Oscillator
1MHz
OCP
OC
SW
-
Contol
Logic
Low-side
MOSFET
+
Current Sense
Amplifier
+
-
PGND
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GS5805
Packages & Pin Assignments
GS5805PSF (PSOP-8)
Pin No
1
2
3
4
5/EP
6
7
8
Pin Name
PGND
OC
VIN
EN
GND
FB
N/C
SW
Top View
Description
Ground Pin.
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 100Kresistor for self-startup. EN cannot be left
floating.
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.
Not connected
Power Switch Output. It is the output pin that internal MOSFET. Connect the
inductor and output rectifier to SW.
Ordering Information
GS Complete P/N
GS5805PSF
Marking Information
Package
PSOP-8
Q’ty / Reel
4000 PCS
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