NCP1050, NCP1051, NCP1052, NCP1053, NCP1054, NCP1055 Monolithic High Voltage Gated Oscillator Power www.onsemi.com Switching Regulator The NCP1050 through NCP1055 are monolithic high voltage MARKING regulators that enable end product equipment to be compliant with low DIAGRAMS standby power requirements. This device series combines the required converter functions allowing a simple and economical power system 8 solution for office automation, consumer, and industrial products. PDIP8 NCP105XZ These devices are designed to operate directly from a rectified AC line P SUFFIX AWL 8 source. In flyback converter applications they are capable of providing CASE 626A YYWWG an output power that ranges from 6.0 W to 40 W with a fixed AC input 1 1 of 100 V, 115 V, or 230 V, and 3.0 W to 20 W with a variable AC input Pin: 1. V CC that ranges from 85 V to 265 V. 2. Control Input 3, 78. Ground This device series features an active startup regulator circuit that 4. No Connection eliminates the need for an auxiliary bias winding on the converter 5. Power Switch Drain transformer, fault detector and a programmable timer for converter overload protection, unique gated oscillator configuration for extremely fast loop response with double pulse suppression, power switch current limiting, input undervoltage lockout with hysteresis, thermal shutdown, SOT223 and auto restart fault detection. These devices are available in AYW ST SUFFIX N5XZ economical 8pin dualinline and 4pin SOT223 packages. CASE 318E Features 1 Pin: 1.V CC Startup Circuit Eliminates the Need for Transformer Auxiliary Bias 2.Control Input Winding 3.Power Switch Drain Optional Auxiliary Bias Winding Override for Lowest Standby 4.Ground Power Applications Converter Output Overload and Open Loop Protection Auto Restart Fault Protection X = Current Limit (0, 1, 2, 3, 4, 5) IC Thermal Fault Protection Z = Oscillator Frequency A = 44 kHz, B = 100 kHz, C = 136 kHz Unique, Dual Edge, Gated Oscillator Configuration for Extremely A = Assembly Location Fast Loop Response WL, = Wafer Lot Oscillator Frequency Dithering with Controlled Slew Rate Driver for YY, Y = Year Reduced EMI WW, W = Work Week G or = PbFree Package Low Power Consumption Allowing European Blue Angel Compliance (Note: Microdot may be in either location) OnChip 700 V Power Switch Circuit and Active Startup Circuit Rectified AC Line Source Operation from 85 V to 265 V ORDERING INFORMATION Input Undervoltage Lockout with Hysteresis See detailed ordering and shipping information on page 22 of this data sheet. Oscillator Frequency Options of 44 kHz, 100 kHz, 136 kHz These are PbFree and HalideFree Devices Typical Applications ACDC Converters Wall Adapters Portable Electronic Chargers Low Power Standby and KeepAlive Supplies Semiconductor Components Industries, LLC, 2015 1 Publication Order Number: January, 2015 Rev. 13 NCP1050/DNCP1050, NCP1051, NCP1052, NCP1053, NCP1054, NCP1055 + AC Line + Snubber + Input Converter DC Output 5 Power Switch Circuit Output V CC Startup & V CC Regulator Circuit + 1 Power Fault Detector Switch Circuit Control Input 2 Oscillator & Gating Logic Ground 3, 78 Figure 1. Typical Application Pin Function Description Pin Pin (SOT223) (PDIP8) Function Description 1 1 V This is the positive supply voltage input. During startup, power is supplied to this input CC from Pin 5. When V reaches V (on), the Startup Circuit turns off and the output is CC CC allowed to begin switching with 1.0 V hysteresis on the V pin. The capacitance con- CC nected to this pin programs fault timing and frequency modulation rate. 2 2 Control Input The Power Switch Circuit is turned off when a current greater than approximately 50 A is drawn out of or applied to this pin. A 10 V clamp is built onto the chip to protect the device from ESD damage or overvoltage conditions. 4 3, 7, 8 Ground This pin is the control circuit and Power Switch Circuit ground. It is part of the integrated circuit lead frame. 4 No Connection 3 5 Power Switch This pin is designed to directly drive the converter transformer primary, and internally Drain connects to Power Switch and Startup Circuit. www.onsemi.com 2