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MP173

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700V Non-Isolated Regulator up to 280mA Output Current

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Datasheet (EN)

Product Description

MP173 is a primary-side regulator that provides accurate constant voltage (CV) regulation without an opto-coupler. It supports buck, boost, buck-boost, and flyback topologies. It has an integrated 700 V MOSFET to simplify the structure and reduce cost. These features make it an ideal regulator for offline, low-power applications, such as home appliances and standby power. MP173 is a green-mode operation regulator. Both the peak current and switching frequency decrease as the load decreases. This feature provides excellent efficiency at light load and improves the overall average efficiency. MP173 has various protection features including thermal shutdown (TSD), VCC under-voltage lockout (UVLO), overload protection (OLP), short-circuit protection (SCP), and open-loop protection. MP173 is available in a small TSOT23-5 package and SOIC-8 package.

Product Features

Primary-Side CV Control, Supporting Buck, Boost, Buck-Boost, and Flyback Topologies
Integrated 700 V MOSFET and Current Source
< 30 mW No-Load Power Consumption
Up to 4 W Output Power
Maximum DCM Output Current Less than 180 mA
Maximum CCM Output Current Less than 280 mA
Low VCC Operating Current
Frequency Foldback
Limited Maximum Frequency
Peak-Current Compression
Internally Biased VCC
TSD, UVLO, OLP, SCP, Open-Loop Protection

Parametrics

Vac (max) (V)305
Vfb (V)2.5
Vbr (V)700
Rds(on) (Ω)20
fsw (max) (kHz)83
Isw Limit (mA)400
Iout (DCM) (max) (mA)180
Iout (CCM) (max) (mA)300
Pout (max) (W)4
Vac (min) (V)20
Power Range DefinedNo
Control MethodOn-Off
PackageSOIC-8, TSOT23-5
GradeCatalog
TypeBuck Regulator
No-Load Pout (max) (mW)30
Iregulator (mA)4.1
Ileak (µA)10

Universal Input, Non-Isolated Off-Line Regulator Evaluation Board

The EV173-J-00A evaluation board is designed to demonstrate the capabilities of MP173. The MP173 is a primary-side constant voltage regulator providing accurate constant voltage (CV) regulation without Opto-coupler. It supports Buck, Buck-Boost, Boost and Flyback topologies.

The EV173-J-00A evaluation board is designed as Buck application. EV173-J-00A typically drives a 3W with a 12V/250mA load from 85VAC to265VAC, at 60/50Hz.

The EV173-J-00A has an excellent efficiency and meets IEC61000-4-5 surge immunity and EN55022 conducted EMI requirements. MP173 features various protections, including thermal shutdown (TSD), VCC under-voltage lockout (UVLO), over-load protection (OLP), short- circuit protection (SCP), and open-loop protection.

MP173 is available in small TSOT23-5 package and SOIC-8 package.

$25.00 + tax