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CX4060 Datasheet Preview

CX4060 Datasheet

PWM Control 2A Step-Down Converter

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CX4060 pdf
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CX4060
PWM Control 2A Step-Down Converter
FEATURES
 2A Output Current
 Up to 95% Efficiency
 4.75V to 18V Input Range
20µA Shutdown Supply Current
360kHz Switching Frequency
 Adjustable Output Voltage from 1.22V to 0.85·VIN
Cycle-by-Cycle Current Limit Protection
Thermal Shutdown Protection
 Frequency Fold Back at Short Circuit
Stability with Wide Range of Capacitors,
 SOP-8 Package
APPLICATIONS
 TFT LCD Monitors
 Portable DVDs
 Car-Powered or Battery-Powered Equipments
 Set-Top Boxes
Telecom Power Supplies
 DSL and Cable Modems and Routers
Termination Supplies
GENERAL DESCRIPTION
The CX4060 is a current-mode step-down
DC-DC converter that generates up to 2A
output current at 360kHz switching frequency.
The device utilizes advanced BCD process for
operation with input voltage up to 18V
consuming only 20µA in shutdown mode, the
CX4060 is highly efficient with peak efficiency
at 95% when in operation.
Protection features include cycle-by-cycle
current limit, thermal shutdown, and frequency
fold back at short circuit.
The CX4060 is available in SOP-8
package and requires very few external
devices for operation.
4.75V to 18V
ENABLE
1
BS
2 IN
SSWW 3
7 ENN ACCCXTX444000660600 FFBB 5
GnGd CCOOMMPP
46
2.5V/2A
Figure 1. Typical Application Circuit
Si-Core Corp.
1
Rev. 1.02



Sicore
Sicore

CX4060 Datasheet Preview

CX4060 Datasheet

PWM Control 2A Step-Down Converter

No Preview Available !

CX4060 pdf
ORDERING INFORMATION
PART NUMBER
TEMPERATURE RANGE
CX4060
-40°C to 85°C
PACKAGE
SOP-8
PINS
7,1 N/C
PIN CONFIGURATION
BS 1
IN 2
SW 3
GND 4
CX4060
8 N/C
7 EN
6 Com
5 FB
CX4060
PIN No.
1
2
3
4
5
6
7
8
PIN NAME PIN DESCRIPTION
BS
IN
SW
G
FB
COMP
EN
N/C
Bootstrap. This pin acts as the positive rail for the high-side switch’s gate driver. Connect a 10nF between this
pin and SW.
Input Supply. Bypass this pin to G with a low ESR capacitor. See Input Capacitor in Application Information
section.
Switch Output. Connect this pin to the switching end of the inductor.
Ground.
Feedback Input. The voltage at this pin is regulated to 1.22V. Connect to the resistor divider between output and
ground to set output voltage.
Compensation Pin. See Compensation Technique in Application Information section.
Enable Input. When higher than 2.0V, this pin turns the IC on. When lower than 1.8V, this pin turns the IC off.
Output voltage is discharged when the IC is off. This pin has a small internal pull up current to a high level
voltage when pin is not connected.
Not Connected.
Si-Core Corp.
2
Rev. 1.02


Part Number CX4060
Description PWM Control 2A Step-Down Converter
Maker Sicore
Total Page 9 Pages
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