Adaptive 100/120Hz Current Ripple Remover - SEMIPOWER
Description
SW7230
Adaptive 100/120Hz Current Ripple Remover Max Input Current ≤1A
Parameters Subject to Change Without Notice
FEATURES
Adaptive 100/120Hz current ripple remover Input voltage range 5V~60V Built-in 60V power MOSFET LED voltage low to 0.
4V when LED current is 1.
3A Programmable amplitude of LED current ripple Programmable maximum cathode voltage of LED Internal LED current limitation Short protection Hot plug protection Over temperature protection TO252-5L Package
SW7230 is used to drive a LED string (<60V), and remove the 100/120Hz current ripple on AC/DC power by a capacitor between VC and GND.
By sensing the LED pin voltage via a resistor divider, SW7230 allows user to setup the maximum cathode voltage of LED string.
SW7230 provides voltage limit threshold and short threshold for protection.
If the voltage on LED pin exceeds limit threshold, the current ripple removing function is blocked, which could help limit the power dissipation on the chip.
It’s considered that LED is shorted when LED voltage is higher than short threshold and remains over 0.
5 second.
The internal MOSFET shuts down when LED is shorted.
SW7230 also provides OPEN and HOT-PLUG protection.
The maximum LED current is internally limited at 1.
3A.
SW7230 provides over thermal protection.
When OTP is trigged, the current removing function is blocked, and then the temperature decreases.
APPLICATIONS
LED lightning
DESCRIPTION
TYPICAL APPLICATION
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semipower.
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1
SW7230
Adaptive 100/120Hz Current Ripple Remover (Max 1A)
ORDERING INFORMATION
PART MARKING SW7230 PACKAGE DESCRIPTION TO252-5L
Top Marking
SW7230
Package Form
PIN CONFIGURATION
Top View
eSOP8
ABSOLUTE MAXIMUM RATING 1）
VIN PIN .
60V LED PIN VC, VLMT .
.
.
.
-0.
3~60V .
.
-0.
3V to 6V
2) 3)
THERMAL RESISTANCE
TO-252-5L
θJA
θJc
45℃/W
.
.
.
.
Junction Temperature
.
150º C
Note：
1...
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