ZXSC440 Zetex Semiconductors plc., ZXSC440 Datasheet - Page 10

• Manufacturer Part Number: ZXSC440
• Description: Zxsc440 - Photoflash Charger
• Manufacturer: Zetex Semiconductors plc.

REFERENCE DESIGNS
General camera photoflash charger
Specification
V
V
Efficiency =
Charging time =
Bill of materials
NOTES:
(1) Transformer specification: Primary inductance: 24uH, Core: Pulse PAO367, Turns ratio: 1:12
(2) Two BAS21 200V rectifier diodes are connected in series and used in place of a 400V rectifier diode to provide faster switching speeds and
ZXSC440
Ref
U1
Q1
D1
Tx1
R1
R2
R3
R4
C1
C2
C3
C4
IN
OUT
higher efficiency.
S E M I C O N D U C T O R S
=
(2)
=
Value
200V
22m
10M /400V
10k
100k
100uF/10V
10pF/500V
10nF/6V3
120uF/330V
5V
275V
71%
4 seconds
Package
MSOP8
SOT23
SOT23
0805
Axial
0805
0805
0805
1206
1206
Radial
Part number
ZXSC440
ZXMN6A07F
BAS21
RL1210
Generic
Generic
Generic
Generic
Generic
Generic
FW Series
Circuit diagram
Manufacturer
Zetex
Zetex
Philips
Pulse
Cyntec
Generic
Generic
Generic
Murata
Generic
Generic
Rubycon
10
Notes
60V N-channel MOSFET
x2 200V fast rectifier diodes
connected in series
See note
Output voltage across resistor
Output voltage seen across capacitor
Photoflash capacitor
(1)
ISSUE 1 - JANUARY 2005