Switching Controllers
20Pages

The NCP1219 represents a new, pin to pin compatible, generationof the successful 7pin current mode NCP12XX product series. Thecontroller allows for excellent standby power consumption by use ofits adjustable skip mode and integrated high voltage startup FET. Internal frequency jittering, ramp compensation, timerbased fault detection and a latch input make this controller an excellent candidate for converters where ruggedness and component cost are the key constraints.The Dynamic Self Supply (DSS) drastically simplifies thetransformer design in avoiding the use of an auxiliary winding to supply the NCP1219. This feature is particularly useful in applications where the output voltage varies during operation (e.g. battery chargers). Due to its high voltage technology, the IC can bedirectly connected to the high voltage dc rail. > http://onsemi.com SOIC7D SUFFIXCASE 751U MARKING DIAGRAM 1219XZALYW Features 18 FixedFrequency CurrentMode Operation with RampCompensation (65 kHz and 100 kHz Options) > 1219= Specific Device CodeX= Overcurrent= (A = latch, B = autoretry)Z= Frequency= (6 = 65 kHz, 1 = 100 kHz)A= Assembly LocationL= Wafer LotY= YearW= Work Week Dynamic Self Supply Eliminates the Need for an Auxiliary Winding > TimerBased Fault Protection for Improved Overload Detection > Cycle Skip Reduces Input Power in Standby Mode > Latch and AutoRecovery Overload Protection Options > Internal High Voltage Startup Circuit > Accurate Current Limit Detector ( ձ 5%) > = PbFree Package Adjustable Skip Level > Latch Input for Easy Implementation of Overvoltage andOvertemperature Protection > PIN CONNECTIONS Frequency Modulation for Softened EMI Signature > 1DrvGNDCSFBSkip/latch HVV 500 mA/800 mA Peak Source/Sink Current Drive Capability > Pin to Pin Compatible with the Existing NCP12XX Series > CC This is a PbFree and HalideFree Device > (Top View) Typical Applications ACDC Adapters for Notebooks, LCD Monitors > Offline Battery Chargers > ORDERING INFORMATION See detailed ordering and shipping information in the packagedimensions section on page 19 of this data sheet. Consumer Electronic Appliances STB, DVD, DVDR > կé Semiconductor Components Industries, LLC, 2009 Publication Order Number: February, 2009 Rev. 01 NCP1219/D size="-2">

+AC * Optionallatch input*R EMIFilter VoltageInputOutput HVDRVV CSFBSkip/latchGND > CC NCP1219 > ramp * >

V > start CC inhibit Skip I > inhibit when V > CC < V > inhibit V > skip(max) FB latch-off, resetwhen VCC< V >

Pin Name Description 1 Skip/latch This pin provides a latch input to permanently disable the device under a fault condition. It also allows the user toadjust the skip threshold. A resistor between this pin and GND provides noise immunity to the latch input and sets the skip threshold. The voltage on this pin is determined by the combination of the internal voltage divider and the external resistor to ground. The default skip threshold is 1.1 V (typical) if no external resistor is used. An internal clamp prevents the skip level from increasing above 1.3 V if the Skip/latch pin is pulled high...

(Notes 1 4) Rating Symbol Value Unit HV Voltage V > HV 0.3 to 500 V HV Current I > HV 100 mA Supply Voltage V > CC 0.3 to 20 V Supply Current I > CC 100 mA Skip/latch Voltage V > Skip/latch 0.3 to 9.5 V Skip/latch Current I > Skip/latch 100 mA FB Voltage V > FB 0.3 to 5.0 V FB Current I > FB 100 mA CS Voltage V > CS 0.3 to 5.0 V CS Current I > CS 100 mA DRV Voltage V > DRV 0.3 to 20 V DRV Current I > DRV 500 to 800 mA Operating Junction Temperature T > J 40 to 150 ְ C Storage Temperature Range T > stg 60 to 150 ְ C Power Dissipation (T > A = 25 C, 2.0 Oz Cu, 1.0 Sq Inch Printed Circuit...

(V > HV = 60 V, V > CC = 11.3 V, V > FB = 2 V, V > Skip/latch = 0 V, V > CS = 0 V, V > DRV = open, C > CC =0.1 F, for typical values T > J = 25 C, for min/max values, T > J is Ж40 C to 125 а C, unless otherwise noted) Characteristics Conditions Symbol Min Typ Max Unit STARTUP AND SUPPLY CIRCUITS Supply VoltageStartup Threshold Minimum Operating VoltageUndervoltage Lockout Double Hiccup Threshold Logic Reset Voltage V V > CC IncreasingV V > CC(on) 11.29.0 8.4 4.9 12.79.9 9.4 5.7 4.0 13.8 10.8 10.66.3֖ > CC DecreasingV V > CC(MIN) CC DecreasingV UVLOV > CC DecreasingV > CC(hiccup) CC...

(V > HV = 60 V, V > CC = 11.3 V, V > FB = 2 V, V > Skip/latch = 0 V, V > CS = 0 V, V > DRV = open, C > CC =0.1 F, for typical values T > J = 25 C, for min/max values, T > J is Ж40 C to 125 а C, unless otherwise noted) CharacteristicsUnitMaxTypMinSymbolConditions GATE DRIVE Drive ResistanceDRV Sink DRV Source V > FB = 0 V, V > DRV = 1 VV R > SNK 2.0 6.0 6.712.6 13 25 > DRV = V > CC 1 V R > SRC Rise Time (10% to 90%) C > DRV = 1000 pF (10% to 90%) t > r ֖ 30 ns Fall Time (90% to 10%) C > DRV = 1000 pF (90% to 10%) t > f ֖ 20 ns LATCH INPUT Latch Voltage Threshold V > latch 3.4 3.9 4.6 V Latch...

CC CC(on) CC(hiccup) CC(on) > V > CC(on) V > CC(MIN) UVLO V > CC(hiccup) V > CC(reset) Fault1 DRVONOFFONFault >

V > CC(on) V > CC(MIN) UVLOFault2DRVV V > CC(hiccup) CC(reset) ONOFFONFault > V > inhibit V > CC(MIN) V > CC(on) FB >

SSTART V > bulk I > ramp(peak) I > ramp 1 VSoftstart voltage, V time > + 180 ns V > CS QS LEB t > SSTART 80%max dutyRV CSPWMOutput I > D PWM FB /3 t (1 V max. signal) Clock R > CS 1 VFeedback pin voltage divided by 3, V > time must be less than t > OVLD time > to prevent fault condition > PWM PWM > 1 VPulse Width Modulation voltage, V time PWMOutput > SSTART Drain Current, I > D PWM time V > CS t > SSTART ILIM D(MAX)

Ramp current, I > ramp N > time80% of period 100% of period ramp >

VV skip > FB Skip CSSKIP > V > Skip -+ V > skip(MAX) V > skip/Latch + > FB latch-off, resetwhen VCC< V >