ZXSC310EV Diodes Zetex, ZXSC310EV Datasheet - Page 11

• Manufacturer Part Number: ZXSC310EV
• Description: BOARD EVALUATION FOR ZXSC310E5TA
• Manufacturer: Diodes Zetex

Specifications of ZXSC310EV

• Outputs And Type: 1, Non-Isolated
• Features: Programmable output current
• Voltage - Input: 0.8 ~ 8 V
• Utilized Ic / Part: ZXSC310
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

P
I
I
Output Power Calculation
By making the above assumptions for inductance and
peak current the output power can be determined by:
Note:V
drop.
Where
T
and
T
and
Where
Operating frequency can be derived by:
F
ISSUE 3 - SEPTEMBER 2007
AV
MIN
OUT
OFF
ON
=
=
=
(
=
=
I
T
≅1.7us (internally set by ZXSC310)
PK
I
T
PK
ON
(
OUT
V
OFF
+
2
−
OUT
+
1
I
(
(
MIN
=output voltage + Schottky rectifier voltage
V
T
V
−
V
OFF
OUT
OUT
IN
V
)
IN
−
−
)
V
×
V
L
IN
I
IN
AV
)
)
×
×
T
T
OFF
ON
T
+
OFF
T
OFF
11
Capacitor selection
For pulsed operation, as in the maximum battery life
solution, no capacitors are required at the output to the
LED. For rectified operation, as in the maximum
brightness solution, a small value ceramic capacitor is
required, typically 2.2uF.
Generally an input capacitor is not required, but a small
ceramic capacitor may be added to aid EMC, typically
470nF to 1uF.
(notes)
S E M I C O N D U C T O R S
ZXSC310