SBOS392H August 2007 – August 2019 REF3312 , REF3318 , REF3320 , REF3325 , REF3330 , REF3333
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Device Comparison
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Parameter Measurement Information
- 9 Detailed Description
-
10Applications and Implementation
- 10.1 Application Information
- 10.2
Typical Applications
- 10.2.1
REF3312 in a Bipolar Signal-Chain Configuration
- 10.2.1.1 Design Requirements
- 10.2.1.2 Detailed Design Procedure
- 10.2.1.3 Application Curves
- 10.2.1
REF3312 in a Bipolar Signal-Chain Configuration
- 11Power-Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
9.3.1 Start-Up Time
The REF33xx features an advanced start-up circuit. Start-up time is almost independent of load (with a 0.1-μF to 10-μF load). Upon startup, the current boost circuit forces the output voltage. When the preset voltage is reached, the REF33xx switches to the second stage of output circuitry to precisely set the output voltage. Figure 18 shows the start-up time of the REF3325 for three different capacitive loads. In all three cases, the output voltage settles within 2 ms.
Figure 18. Start-Up Time