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Power Analog Micoelectronics
Power Analog Micoelectronics

PAM2421 Datasheet Preview

PAM2421 Datasheet

PWM STEP-UP DC-DC CONVERTER

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PAM2421 pdf
A Product Line of
Diodes Incorporated
PAM2421/ PAM2422/ PAM2423
3A, 4.5A, 5.5A PWM STEP-UP DC-DC CONVERTER
Description
The PAM242x devices are high-performance, fixed frequency,
current-mode PWM step-up DC/DC converters that incorporate
internal power MOSFETs. The PAM242x includes an integrated
power MOSFET that supports peak currents of up to 3A/4.5A/5.5A.
The PAM242x utilizes simple external loop compensation allowing
optimization between component size, cost and AC performance
across a wide range of applications. Additional functions include an
externally programmable soft-start function for easy inrush current
control, internal over-voltage protection (OVP), cycle-by-cycle current
limit protection, under voltage lock-out and thermal shutdown.
The PAM242x is available in the small SOP-8(EP) package.
Pin Assignments
Features
Greater than 90% Efficiency
Adjustable Output Voltage Up to 24V
Internal 24V Power MOSFET
Peak Current 3A,4.5A,5.5A
520kHz Frequency
Built-in Over-Voltage Protection (OVP)
Open Protection
Programmable Soft-Start Function
Thermal Shutdowns
Under-Voltage-Lockout
Over-Current Protection
SOP-8(EP) Package
Applications
TFT LCD Monitors
Battery-Powered Equipment
Set-Top Boxes
DSL and Cable Modems and Routers
Typical Applications Circuit
PAM2421/PAM2422/PAM2423
Document number: DSxxxxx Rev. 1 - 1
1 of 10
www.diodes.com
November 2012
© Diodes Incorporated



Power Analog Micoelectronics
Power Analog Micoelectronics

PAM2421 Datasheet Preview

PAM2421 Datasheet

PWM STEP-UP DC-DC CONVERTER

No Preview Available !

PAM2421 pdf
A Product Line of
Diodes Incorporated
PAM2421/ PAM2422/ PAM2423
Pin Descriptions
Pin
Number
1
2
3
4
5
6
7
8
SOP-8(EP)
Pin Name
PGND
IN
EN
COMP
AGND
FB
SS
SW
Exposed PAD
Function
Power Ground
Supply Input
Enable Control. Connect to a logic high level to enable the IC. Connect to a logic low
level to disable the IC. When unused, connect EN pin to IN (do not leave pin floating).
Error Amplifier Compensation Node
Analog Ground
Feedback Input.Connect this pin a resistor divider from the output to set the output
voltage. FB is regulated to 1.262V.
Soft Start Control Input. Connect a capacitor from this pin to Ground to set soft-start
timing duration. SS is discharged to ground in shutdown. SS may be left unconnected if
soft start is not desired.
Switch Output. Connect this pin to the inductor and the schottky diode. To minimize
EMI, minimize the PCB trace path between this pin and the input bypass capacitor.
Connected to Ground
Functional Block Diagram
PAM2421/PAM2422/PAM2423
Document number: DSxxxxx Rev. 1 - 1
2 of 10
www.diodes.com
November 2012
© Diodes Incorporated


Part Number PAM2421
Description PWM STEP-UP DC-DC CONVERTER
Maker Power Analog Micoelectronics
Total Page 10 Pages
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