Electronic Components Datasheet Search |
|
IRU3034PBF Datasheet(PDF) 3 Page - International Rectifier |
|
IRU3034PBF Datasheet(HTML) 3 Page - International Rectifier |
3 / 12 page IRU3034 & (PbF) 3 www.irf.com PIN DESCRIPTIONS BLOCK DIAGRAM Figure 2 - Simplified block diagram of the IRU3034. The PWM output of the switching controller. This pin is a totem pole drive that is con- nected to the gate of the power MOSFET. A resistor may be placed from this pin to the gate in order to reduce switching noise. This pin supplies the voltage to the PWM drive and hysteresis circuitry and it is connected to the 12V supply. A 1µF, high frequency capacitor must be connected from this pin to ground to provide the peak current for charging and discharging of the MOSFET. A resistor divider from this pin to the output of the switching regulator and ground sets the Core supply voltage. A resistor and a 10pF capacitor is connected from this pin to the VFB pin to set the output ripple voltage for the switching regulator. This pin is connected to the IC substrate and must be connected to the lowest potential in the system. This pin is connected to the minus side of the external current sense resistor. An internal current source together with an external resistor in series with this pin programs the current limit threshold voltage. This voltage divided by the external current sense resistor sets the current limit threshold. This pin is connected to the plus side of the external current sense resistor. A resistor in series with this pin and a capacitor connected between this pin and pin 6 provides a high frequency filtering for the noise spikes of turn on and turn off switching. This pin provides the soft-start for the regulator during power up. It also sets a long off time when the converter goes into current limiting, providing low duty cycle for the catch diode allowing it to survive during short circuit. PIN # PIN SYMBOL PIN DESCRIPTION 1 2 3 4 5 6 7 8 Drv V12 VFB VHYST Gnd CS- CS+ SS VREF UVLO 1.25V PWM Control V12 VHYST CS+ Drv Gnd VFB CS- 5 1 2 4 3 7 6 SS 8 5V Reg S.S. / Hiccup Control 20uA R 3R |
Similar Part No. - IRU3034PBF |
|
Similar Description - IRU3034PBF |
|
|
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 |