Electronic Components Datasheet Search |
|
ISL6720AARZ Datasheet(PDF) 9 Page - Intersil Corporation |
|
ISL6720AARZ Datasheet(HTML) 9 Page - Intersil Corporation |
9 / 11 page 9 FN6487.1 August 23, 2007 . VSW VSW is the switched output and may be turned on and off using the ENABLE pin (GND = off). The output is adjustable from 1.5V to 15V, but must always be at least 1.5V lower than VIO and 5.5V lower than VPWR. VSW uses VIO as its input source. If the external source applied to VIO is unable to supply adequate voltage, VPWR will be selected as an alternate source for VIO (and VSW). VSW is capable of sourcing up to 50mA continuously, and up to 80mA on a transient basis. The output voltage is adjusted using the VSWADJ input. The voltage applied to this pin, multiplied by an internal gain of 7, sets the output voltage. With a 220pF capacitor from VSW to VSWCOMP, the load capacitance on VSW should be 1.0µF nominal, with a range of 0.47µF to 1.5µF. VSW requires a minimum load of 500µA. These conditions must be met even if the VSW output is not used. VCONT VCONT, which has a tight tolerance output and can source 25mA, is a continuos output. It remains on during most fault conditions and precedes VIO and VSW during power-up. It may be used as reference for other circuitry, or may be used to power a micro-controller or other similar device. VCONT selects VIO as its primary source voltage, but also uses VPWR if VIO is not present or capable. VIO must have at least 5V of headroom above VCONT or VPWR is selected as the source. VCONT is enabled when VPWR exceeds its UVLO threshold and its operation precedes the enabling of VIO and VSW by 250 μs, nominal. VCONT requires a minimum 250 μA load for stability. It should be bypassed to GND with a 1µF capacitor and requires a 1nF compensation capacitor between VCOMP and VCONT. These conditions must be met even if the VCONT output is not used. Figure 7 depicts the output deviation on each output when VSW experiences a 0mA to 50 mA step load. VIO Is unloaded without back-bias and VCONT has a 250 μA (minimum) load. Figure 8 depicts the output deviation on each output when VCONT experiences a 0mA to 25mA step load. VIO Is unloaded without back-bias and VSW has a 500 μA (minimum) load. VADJ ENABLE VIO 7 9 10 11 8 6 N/C VSWCOMP VSW + ISL6720A FIGURE 6. ISOLATING VIO FROM LARGE CAPACITANCES VSW 7 VSWADJ × = V (EQ. 2) FIGURE 7. VSW TRANSIENT RESPONSE, 0mA to 50mA STEP, TRACE1: VSW, TRACE2: VCONT, TRACE3: VIO TRACE 1 TRACE 1 TRACE 3 TRACE 2 FIGURE 8. VCONT TRANSIENT RESPONSE, 0mA to 25mA STEP, TRACE1: VSW, TRACE2: VCONT, TRACE3: VIO TRACE 1 TRACE 3 TRACE 2 ISL6720A |
Similar Part No. - ISL6720AARZ |
|
Similar Description - ISL6720AARZ |
|
|
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 |