OB2222EC

非隔离降压芯片; • Universal AC input range and 5.0V output voltage\r\n\r\n• Constant power mode operation at over load application\r\n\r\n• Low cost and less BOM for buck and buck-boost applications\r\n\r\n• Current mode control\r\n\r\n• 40kHz (typical) maximum switching frequency\r\n\r\n• Frequency-reduction and burst mode control for high efficiency\r\n\r\n• Frequency shuffling for EMI improvement\r\n\r\n• Power on soft-start \r\n\r\n• Built-in Leading Edge Blanking (LEB)\r\n\r\n• Cycle-by-cycle current limiting\r\n\r\n• FB pin open loop protection\r\n\r\n• Output short-circuit protection\r\n\r\n• VDD Under Voltage Lockout with Hysteresis\r\n\r\n• VDD OVP\r\n\r\n• On-Chip OTP\r\n;

OB2222E is a high performance, high precision and low cost PWM Power switch for non-isolated buck and buck-boost application. It combines a dedicated current mode PWM controller with a high voltage power Bipolar in SOP8 package. Its built-in error amplifier is optimized for good overshoot and dynamic response for low cost and component count. With precise inner resistor divider, precise reference of EA, constant voltage regulation of 5.0V at universal AC input can be guaranteed. Frequency reduction and burst mode control is implemented for high efficiency at light load. Good EMI performance is achieved with On-Bright proprietary frequency shuffling technique and soft base driver design. Low startup current and low operating current contribute to a reliable power on startup and low standby power consumption with OB2222E. Constant power operation is supported at over load application with OB2222E, which makes it suitable for small home appliance application where instant large power consumption is required such as start-up of a fan.\r\n\r\nOB2222E offers power on soft start control and protection coverage with auto-recovery features including cycle-by-cycle current limiting, output short circuit protection, FB pin open loop protection, on-chip Over Temperature Protection (OTP), VDD Over Voltage Protection (OVP), and VDD Under Voltage Lockout Protection (UVLO).\r\n\r\nThe tone energy at below 20KHz is minimized in the design so that audio noise is eliminated during operation.\r\n\r\nOB2222E is offered in SOP8 package.

OB2222LM

High Precision Low Cost Power Switch;

OB2222LMC

非隔离降压芯片;

P2222A

Transistors

[usha] GENERALPURPOSETRANSISTOR •Collector-EmitterVoltage:VCEO=40V •CollectorDissipation:PC(max)=625mW

PA2222

LoPro??DualSPDTAnalogSwitch

PG2222S

SINGLECOLORLED

[STANLEY] SINGLECOLORLED 1.6mmRoundShape

PH2222

NPNswitchingtransistor

DESCRIPTION NPNswitchingtransistorinaTO-92;SOT54plasticpackage.PNPcomplement:PH2907A. FEATURES •Highcurrent(max.600mA) •Lowvoltage(max.40V). APPLICATIONS •Switchingandlinearamplification.

PHI

PH2222A

NPNswitchingtransistor

DESCRIPTION NPNswitchingtransistorinaTO-92;SOT54plasticpackage.PNPcomplement:PH2907A. FEATURES •Highcurrent(max.600mA) •Lowvoltage(max.40V). APPLICATIONS •Switchingandlinearamplification.

PHI

PMBT2222

NPNswitchingtransistors

DESCRIPTION NPNswitchingtransistorinaSOT23plasticpackage. PNPcomplements:PMBT2907andPMBT2907A. FEATURES •Highcurrent(max.600mA) •Lowvoltage(max.40V). APPLICATIONS •Switchingandlinearamplification.

PHI

PMBT2222

NPNswitchingtransistors

Generaldescription NPNswitchingtransistorsinasmallSOT23(TO-236AB)Surface-MountedDevice(SMD)plasticpackage. Featuresandbenefits ■Highcurrent(max.600mA) ■Lowvoltage(max.40V) Applications ■Switchingandlinearamplification

ETC