Electronic Components Datasheet Search |
|
LT3070 Datasheet(PDF) 19 Page - Linear Technology |
|
LT3070 Datasheet(HTML) 19 Page - Linear Technology |
19 / 24 page LT3070 19 3070p APPLICATIONS INFORMATION Quieting the Noise The LT3070 offers numerous noise performance advan- tages. Each LDO has several sources of noise. An LDO’s most critical noise source is the reference, followed by the LDO error amplifier. Traditional low noise regulators buffer the voltage reference out to an external pin (usually through a large value resistor) to allow for bypassing and noise reduction of reference noise. The LT3070 deviates from the traditional voltage reference by generating a low voltage VREF from a reference current into an inter- nal resistor ≅19k. This intermediate impedance node (REF/BYP) facilitates external filtering directly. A 10nF filter capacitor minimizes reference noise to 10μVRMS at the 600mV REF/BYP pin, equivalently a 17μV contribution to output noise at VOUT = 1V. See the Typical Performance Characteristics for Noise vs Output Voltage performance as a function of CBYP/REF. This approach also accommodates reference sharing between LT3070 regulators that are hooked up in cur- rent sharing applications. The REF/BYP filter capacitor delays the initial power-up time by a factor of the RC time constant. VREF remains active in nap mode, thus start-up time is significantly reduced and well controlled coming out of nap mode (EN:LO ↑HI). BIAS 50k LT3070 IN EN VO0 VO1 330μF 2.2μF 2.2μF* 0.01μF 1nF 4.7μF* 3070 F06 10μF* *X5R OR X7R PWRGD VOUT 1.2V 5A VO2 MARGSEL MARGTOL NC NC VIOC SENSE OUT VBIAS 3.3V VIN 1.5V PWRGD REF/BYP GND Figure 6. 1.5V to 1.2V Linear Regulator |
Similar Part No. - LT3070 |
|
Similar Description - LT3070 |
|
|
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 |