Log in to myMicrochip to access tools and benefits. Sign up in just one minute.
Maximize Your Experience: Reap the Personalized Advantages by Completing Your Profile to Its Fullest. Update Here
Stay in the loop with the latest from Microchip. Update your profile while you are at it. Update Here
Complete your profile to access more resources. Update Here
true
AN813
| Title |
Title
Applying the TC1219/TC1220 Inverting Charge Pumps with Small External Capacitor Values
|
|---|---|
| Name |
Name
AN813
|
| Date |
Date
06/24/2015
|
| Product Categories |
Product Categories
Power Management ICs /
Switching Regulator
|
| Description |
Description
In many cases where a negative DC bias source is required, lower output load currents (15 mA or less) and faster shutdown times are what the design engineer optimally needs. For applications such as these, the TC1219 and TC1220 can be applied with lower value external capacitors than those recommended in the device data sheet. The data in this Application Note shows measurements taken on both the TC1219 and TC1220 using five different, smallervalue external capacitors: a) 2.2 µF, b) 1 µF, c) 0.47 µF, d) 0.22 µF and e) 0.1 µF. All measurements were made with a 5V input (at the VIN pin) and at ambient temperature TA = +25°C.
|