EN5366QI-E Enpirion, EN5366QI-E Datasheet - Page 4

• Manufacturer Part Number: EN5366QI-E
• Description: Power Management Modules & Development Tools 6AMP MOD INT IND EVAL BOARD
• Manufacturer: Enpirion
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of EN5366QI-E

• Input Voltage: 2.4 V to 5.5 V
• Output Voltage: 0.8 V to 3.3 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Product: Power Management Modules
• For Use With/related Products: EN5366QI

If over-voltage protection is desired, use the following equation to set the resistor
Ra2 for the desired OVP trip-point. Note that the evaluation board leaves these
resistors un-populated.
By design, if both resistor dividers are the same, the OV trip-point will be 20%
above the nominal output voltage.
Figure 2. V
NOTE: if no OVP divider is present, there will be no over-voltage protection and POK will remain
“high” as long as V
Test Recommendations
Recommendations
To guarantee measurement accuracy, the following precautions should be
observed:
Ra
Ra
V
1
IN
2
=
=
(
(
47µF
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
Vout
OVPtrip
C
SS
OUT
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.
−
. 0
and OVP resistor divider networks.
. 0
75
75
. 0
PVIN
AVIN
SS
−
OUT
V
90
V
. 0
remains above 90% of the nominal V
* )
90
V
V
Rb
AGND
POK
* )
1
Rb
2
PGND
VOUT
XOV
XFB
Page 4 of 5
EN5366QI Evaluation Board Application Note
R
R
a2
b2
R
R
a1
b1
OUT
setting.
~50uF
V
OUT
November 2006 V_1