PAM2421 Datasheet, PDF (1/9 Pages) Power Analog Micoelectronics – 3A,4.5A,5.5A PWM Step-Up DC/DC Converter

PAM2421,PAM2422,PAM2423
3A,4.5A,5.5A PWM Step-Up DC/DC Converter
Features
n Greater than 90% Efficiency
n Adjustable Output Voltage Up to 24V
n Internal 24V Power MOSFET
n Peak Current 3A,4.5A,5.5A
n 520kHz Frequency
n Built-in Over-Voltage Protection (OVP)
n Open Protection
n Programmable Soft-Start Function
n Thermal Shutdowns
n Under-Voltage-Lockout
n Over-Current Protection
n SOP-8(EP) Package
Applications
n TFT LCD Monitors
n Battery-Powered Equipment
n Set-Top Boxes
n DSL and Cable Modems and Routers
General Description
The PAM242x devices are high-performance,fixed
frequency, current-mode PWM step-up DC/DC
converter 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.
Typical Application
VIN
3.6V~5.5V
C1
4 7 0 μF
C2
1 0 μF
L1
6.8 μH
PGND
SW
C3
1μF
R3
51k
C7
2.2nF
SS
VIN
PAM242x
EN
FB
COMP
C6
47pF
AGND
SS34
C8
10nF
VOUT
12V/800mA
C4
10uF
C5
470uF
R1
85k
R2
10k
Power Analog Microelectronics, Inc
www.poweranalog.com
1
02/2012 Rev1.1