EN5335QI-E Enpirion, EN5335QI-E Datasheet - Page 4

• Manufacturer Part Number: EN5335QI-E
• Description: Power Management Modules & Development Tools 3AMP MOD INT IND VID EVAL BOARD
• Manufacturer: Enpirion
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of EN5335QI-E

• Input Voltage: 2.4 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Product: Power Management Modules
• For Use With/related Products: EN5335QI

Test Recommendations
Recommendations
To guarantee measurement accuracy, the following precautions should be
observed:
Input and Output Capacitors
The input capacitance requirement is 22 uF for the EN5335QI. Enpirion
recommends that a low ESR MLCC capacitor be used. The voltage rating should
rated high enough to provide adequate margin for your application. There is a
pre-tinned pad for one additional 1210 capacitor to experiment with input filter
performance.
The output capacitance requirement is approximately 50uF of capacitance and
comes populated with a 47uF 1210 6.3V MLCC. The board has pre-tinned pads
for up to 4 additional output capacitors with 1210 or 1206 footprint. Various
combinations of output capacitor can be used to reduce effective series
resistance.
NOTE: Capacitors must be X5R or X7R dielectric formulations.
1. Make all input and output voltage measurements at the board using the
2. Measure input and output current with series ammeters or accurate
3. Use a balanced impedance probe tip to measure switching signals to
test points provided. This will eliminate voltage drop across the line and
load cables that can produce false readings.
shunt resistors. This is especially important when measuring efficiency.
avoid noise coupling into the probe ground lead.
Page 4 of 5
EN5335QI Evaluation Board Application Note
October 2006 V_1