OB2535 is a high performance offline PWM Power switch for low power AC/DC charger and adapter applications. It can achieve ±5% precision constant voltage (CV) and high precision constant current (CC). It operates in primary-side sensing and regulation. Consequently, opto-coupler and TL431 could be eliminated.
Features:
◆ ±5% constant voltage regulation at universal AC input
◆ Primary-side sensing and regulation without TL431 and opto-coupler
◆ Programmable CV and CC regulation
◆ Adjustable constant current and output power setting
◆ Built-in primary winding inductance compensation
◆ Programmable cable drop compensation
◆ Power on soft-start
◆ Built-in leading edge blanking (LEB)
◆ Cycle-by-Cycle current limiting
◆ VDD under voltage lockout with hysteresis (UVLO)
◆ VDD OVP
◆ VDD clamp
◆ Available in SOP8 packages, RoHS compliant
Applications:
◆ CC/CV Battery Charger
◇Cell/Cordless Phone Charger
◇Digital Camera Charger
◇PDA Charger
◆ Small Power Adapter
◆ Auxiliary Power for PC, TV etc.
◆ Linear Regulator/RCC Replacement
Device
|
MOSFET Rdson(ohm)
|
Package
|
Max Pout(W)note
|
Max Pout(W)(85~264V)
|
Frequency
|
OB2531
|
External
|
SOT23-6
|
--
|
--
|
95kHz
|
OB2532
|
External
|
SOT23-6
|
--
|
--
|
60kHz
|
OB2535/E
|
12
|
SOP8
|
10
|
5
|
60kHz
|
OB2536/E
|
12
|
DIP8
|
16
|
9
|
60kHz
|
OB2538/E
|
5
|
DIP8
|
20
|
15
|
60kHz
|
OB2539
|
5
|
DIP8
|
18
|
13
|
95kHz
|
|