SS6578 ETC-unknow, SS6578 Datasheet - Page 2

• Manufacturer Part Number: SS6578
• Description: High Efficiency Step Down Dc/dc Controller
• Manufacturer: ETC-unknow

Rev.2.02 4/06/2004
TYPICAL APPLICATION CIRCUIT
ABSOLUTE MAXIMUM RATINGS
TEST CIRCUIT
VIN Supply Voltage.....…………................................…….............................................. 20V
DUTY Voltage.........................................……………...……........................................... 20V
Operating Temperature Range................………….....…….................................... 0 C~70 C
Storage Temperature Range......................…………....……........................... -65 C~ 150 C
SHDN Voltage......................................………….......……............................................. 15V
Refer to TYPICAL APPLICATION CIRCUIT.
+V
IN
6.4~18V
V
V
f
L= Inductor value
I
V
**V
V
I
R
S
O,MAX
P
IN
OUT
TH
IN
: Working frequency
S
+
*
: Input voltage
IN
: Current Limit Sense Threshold
Rs
C1
100 F
15V, R7=0
I
: Output voltage
>15V, R7=15
, O
: Maximum Output current
V
MAX
I
TH
P
0.1 F
C2
V
50
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2
Q1
O
V
I
mV
P
(
IN
V
DC/DC Buck Converter
IN
<15V
1M
R6
f
S
2
V
V
O
D1
GS SS32
L
IN
)
1
2
3
4
f
S
U1 SS6578
VIN
DUTY
SHDN
FB
LI
, O
0
MAX
33 H
1 .
L1
V
GND
IN
CS+
DRI
CS-
f
V
S
IN
L
8
7
6
5
V
O
**
R7
V
470 F
O
C4
+V
2
OUT
+
, 5V
R3
12K
R4
3K9
SS6578
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