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PAM2422 Datasheet

PWM STEP-UP DC-DC CONVERTER

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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 SO-8EP package.
Pin Assignments
SO-8EP
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
SO-8EP Package
Applications
TFT LCD Monitors
Battery-Powered Equipment
Set-Top Boxes
DSL and Cable Modems and Routers
Typical Applications Circuit
VIN
3.6V ~ 5.5V
C1
470mF
C2
10mF
C3
1mF
R3 C6
51k 47pF
C7
2.2nF
L1
6.8mH
PGND
SW
SS34
VIN PAM242X SS
EN
COMP
AGND
FB
C8
10nF
C4
10mF
R1
85k
VOUT
12V/800mA
C5
470mF
R2
10k
PAM2421/ PAM2422/ PAM2423
Document number: DS36383 Rev. 2 - 2
1 of 10
www.diodes.com
January 2016
© Diodes Incorporated


Diodes Semiconductor Electronic Components Datasheet

PAM2422 Datasheet

PWM STEP-UP DC-DC CONVERTER

No Preview Available !

PAM2421/ PAM2422/ PAM2423
Pin Descriptions
Pin
Number
1
2
3
4
5
6
7
8
SO-8EP
Pin Name
Function
PGND Power Ground
VIN Supply Input
EN
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).
COMP Error Amplifier Compensation Node
AGND Analog Ground
FB
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
SS timing duration. SS is discharged to ground in shutdown. SS may be left unconnected if
soft start is not desired.
SW
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.
Exposed PAD Connected to Ground
Functional Block Diagram
mA
PAM2421/ PAM2422/ PAM2423
Document number: DS36383 Rev. 2 - 2
2 of 10
www.diodes.com
January 2016
© Diodes Incorporated


Part Number PAM2422
Description PWM STEP-UP DC-DC CONVERTER
Maker Diodes
Total Page 10 Pages
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