VSUPEV2 Microchip Technology, VSUPEV2 Datasheet - Page 26

• Manufacturer Part Number: VSUPEV2
• Description: BOARD EVAL FOR MCP4022,4023,4024
• Manufacturer: Microchip Technology

Specifications of VSUPEV2

• Main Purpose: Power Management, Power Supply Supervisor/Tracker/Sequencer
• Embedded: No
• Utilized Ic / Part: SOT-23-5, SOT-23-6 Package
• Primary Attributes: Voltage Detector & Supervisor
• Secondary Attributes: 5 Boards & 3 IC's Included
• Processor To Be Evaluated: SOT23-5/6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Voltage Supervisor SOT23 Evaluation Board User’s Guide
C.3
DS51510A-page 22
IDEAS ON EVALUATING AN LDO
TABLE C-1:
One of the characteristics that a designer may wish to evaluate on a LDO is how the
LDO responds to transient loads. Figure C-2 shows a system block diagram for
evaluating a LDO and a typical waveform response (at test point) for the function
generator signal. The output of the function generator connects to a BJT transistor to
simulate the fast switching loads of the circuit.
The value of C2, R3 and C
Look at both the worst-case amplitude load requirements for a loaded and unloaded
system. As the output response of the LDOs become faster, the selection of a smaller
(cheaper) output load capacitor (C
performance).
FIGURE C-2:
MCP1700
MCP1701
MCP1525
MCP1541
Device
TC59
Test
Point
Function
Generator
Output
Power
Supply
LDO
LDO
Voltage Reference
Voltage Reference
LDO
Device Family
MICROCHIP ANALOG DEVICES AND SOT23 EVAL BOARD
CIRCUIT/FOOTPRINT OPTION SELECTION
LDO EVALUATION SYSTEM
LDO
SOT23 Evaluation Board PCB
L
will depend on the LDO used and the load of the circuit.
C2
L
Supported
) becomes possible (for the same system
Option 2
Option 2
Option 3
Option 3
Option 4
C
L
on
Test Point
R3
Comment/
Recommended Component Values:
C1 = 1 µF Ceramic
C2 = 1 µF Ceramic
C1 = 1 µF Tantalum
C2 = 1 µF Tantalum
C1 = 0.1 µF
C2 = 1 µF to 10 µF
C1 = 0.1 µF
C2 = 1 µF to 10 µF
C1 = 1 µF Tantalum
C2 = 1 µF Tantalum
 2004 Microchip Technology Inc.
From Function
Generator