I'm new at the circuit design biz. I'm designing a battery powered device around the TI TPS61025 boost converter, and I'm rather confused about the proper range for the low-ESR output capacitor. The data sheet says says
With the calculated minimum value of 24 μF and load transient considerations the recommended output capacitance value is in a 47 to 100 μF range. For economical reasons, this is usually a tantalum capacitor. Therefore, the control loop has been optimized for using output capacitors with an ESR of above 30 mΩ.So I understand I want a cap in the 47-100 μF range with an ESR of at least 30 mΩ. But what's a reasonable upper limit for the ESR? Is there an upper limit?