Electronic Components Datasheet Search |
|
NCP1032 Datasheet(PDF) 3 Page - ON Semiconductor |
|
NCP1032 Datasheet(HTML) 3 Page - ON Semiconductor |
3 / 21 page NCP1032 www.onsemi.com 3 Table 1. FUNCTIONAL PIN DESCRIPTION Pin Name Function Description 1 GND IC Ground Ground reference pin for the circuit. 2 CT Oscillator Frequency Selection An external capacitor connected to this pin sets the oscillator frequency up to 1 MHz. The oscillator can be synchronized to a higher frequency by charging or discharging CT to trip the internal 3.0 V/3.5 V comparators. If a fault condition exists, the power switch is disabled and the frequency is reduced. 3 VFB Feedback Signal Input The regulated voltage is scaled down to 2.5 V by means of a resistor divider. Regulation is achieved by comparing the scaled voltage to an internal 2.5 V reference. 4 COMP Error Amplifier Compensation The output of the internal error amplifier. External compensation network between COMP and VFB pin is required for stable operation. 5 CL Current Limit Threshold Selection A resistor RCL connected between this pin and ground sets the peak current value of the current limit. If the CL pin is left open, the current limit value is set to its initial maximum value of approximately 12 mA (CLIM_MAX). Programmable current limit threshold, together with internal soft−start feature effectively limits the primary transformer high current peaks during startup phase. 6 UV/OV Input Line Undervoltage and Overvoltage Shutdown Input line voltage is scaled down using an external resistor divider. The minimum operating Vin voltage is achieved when the voltage on UV/OV pin reaches UV threshold 1.0 V. The maximum operating voltage is then limited by 2.4 V on UV/OV pin. A device version without OV protection feature is available, see ordering information section. 7 VCC Powers the Internal Circuitry Supplies power to the internal control circuitry. Connect an external capacitor for energy storage during startup. The Vcc voltage should not exceed 16 V during operation. 8 VDRAIN Drain Connection Connects the power switch and startup circuit to the primary transformer windings. EP EP Thermal Flag This is the thermal flag for the IC and should be soldered to the ground plane. Table 2. MAXIMUM RATINGS Rating Symbol Value Unit Power Switch and Startup Circuits Voltage BVdss −0.3 to +200 V VCC Power Supply Voltage VCC −0.3 to +16 V Power Supply Voltage on all Pins, except VDRAIN and VCC VIO −0.3 to +10 V Drain Current Peak During Transformer Saturation IDS(pk) 1.0 A Thermal Resistance Junction−to−Air –W DFN8 3x3, case 511BH (100 sq mm, 2oz) (Note 4) (500 sq mm, 2oz) (Note 4) (100 sq mm,2oz,) (Note 5) RqJA 109 64 44 °C/W Maximum Junction Temperature TJMAX 150 °C Storage Temperature Range TSTG −60 to +150 °C ESD Capability, Human Body Model Pins 1−7 (Note 1) 4.0 kV ESD Capability, Machine Model Pins 1−7 (Note 1) 400 V Pin 8 is connected to the high voltage startup and power switch which is protected to the maximum drain voltage 200 V Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. This device series contains ESD protection and passes the following tests: Human Body Model (HBM) ± 2.0 kV per JEDEC standard: JESD22−A114. Machine Model (MM) ± 200 V per JEDEC standard: JESD22−A115. 2. This device contains latch−up protection and it exceeds ± 100 mA per JEDEC standard: JESD78 class II 3. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J−STD−020A 4. EIA JEDEC 51.3, single layer PCB with added heat spreader 5. EIA JEDEC 51.7, four layer PCB with added heat spreader |
Similar Part No. - NCP1032 |
|
Similar Description - NCP1032 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |