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KB3408 Scheda tecnica(PDF) 5 Page - Kingbor Technology Co

Il numero della parte KB3408
Spiegazioni elettronici  1.5MHz,350mA Synchronous Step-Down Regulator in SOT23-5
PDF  6 Pages
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Produttore elettronici  KINGBOR [Kingbor Technology Co]
Homepage  http://www.kingbor.com
Logo KINGBOR - Kingbor Technology Co

KB3408 Scheda tecnica(HTML) 5 Page - Kingbor Technology Co

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March 2007
5
KB3408
Kingbor Technology Co.,Ltd
TEL:(86)0755-26508846 FAX:(86)0755-26509052
+
–
+
–
EA
IRCMP
+
–
ICOMP
5
1
RUN
OSC
SLOPE
COMP
OSC
FREQ
SHIFT
0.6V
FB
R1
R2
0.6V REF
SHUTDOWN
0.4V
0.65V
SLEEP
VIN
VFB/VOUT
BURST
VIN
S
R
RS LATCH
SWITCHING
LOGIC
AND
BLANKING
CIRCUIT
ANTI-
SHOOT-
THRU
Q
Q
5
4
SW
3
GND
2
SIMPLIFIED BLOC DIAGRAM
Tiny 3.3V/350mA Buck Regulator
VIN
CIN
4.7
µF
VIN
3.6V
KB3408
RUN
3
4.7
µH
22pF
450k
100k
5
4
1
2
SW
VFB
GND
COUT**
10
µF
CER
VOUT
3.3V
350mA
** TAIYO YUDEN JMK316BJ106ML
+
to 7.4V
OUTPUT CURRENT (mA)
70
80
85
95
100
0.1
10
100
500
60
1
90
75
65
VIN = 5V
VOUT = 3.3V
IL
500mA/DIV
ILOAD
500mA/DIV
VOUT
100mV/DIV
AC COUPLED
20
µs/DIV
VIN = 5V
VOUT = 3.3V
ILOAD = 200mA TO 350mA
TYPICAL APPLICATION



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