LTC1174CN8 Linear Technology, LTC1174CN8 Datasheet - Page 12
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LTC1174CN8
Manufacturer Part Number
LTC1174CN8
Description
IC DC/DC CONV STP-DWN&INVRT 8DIP
Manufacturer
Linear Technology
Type
Step-Down (Buck), Invertingr
Datasheet
1.LTC1174CN8PBF.pdf
(20 pages)
Specifications of LTC1174CN8
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
1.25 ~ 18 V
Current - Output
1A
Frequency - Switching
200kHz
Voltage - Input
4 ~ 18.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC1174CN8
Manufacturer:
LT
Quantity:
2 000
Company:
Part Number:
LTC1174CN8-5
Manufacturer:
LT
Quantity:
5 510
Company:
Part Number:
LTC1174CN8-5
Manufacturer:
ST
Quantity:
5 510
APPLICATIO S I FOR ATIO
LTC1174
LTC1174-3.3/LTC1174-5
Solving for L in the above equation and with V
L = 44.8µH. The next higher standard value of L is 50µH
(example: Coiltronics CTX50-4). The operating frequency,
neglecting voltage across diode V
With the value of L determined, the requirements for C
and C
should be at least:
For C
12
I
I
f
RMS
RMS
≈
=
OUT
OUT
2 5 10 1
111
. •
=
≈
=
=
, the RMS current rating should be at least:
are calculated. For C
kHz
I
I
174
300
OUT
PEAK
2
5
mA
mA
[
⎛
⎜
⎝
V
OUT
−
U
(
V
A
(
V
OUT
RMS
V
V
IN
IN
IN
U
⎞
⎟
⎠
−
)
V
OUT
IN
, its RMS current rating
)
D
]
1 2
W
/
is:
(
A
RMS
U
D
)
= 0.6V,
IN
Now allow V
the operating frequency will decrease. The new frequency
is 42kHz.
Table 1. Inductor Manufacturers
MANUFACTURER
Coilcraft
1102 Silver Lake Road
Cary, IL 60013
(708) 639-2361
Coiltronics Inc.
6000 Park of Commerce Blvd.
Boca Raton, FL 33487
(407) 241-7876
Gowanda Electronics Corporation
1 Industrial Place
Gowanda, NY 14070
(716) 532-2234
Sumida Electric Co. Ltd.
637 E. Golf Road, Suite 209
Arlington Heights, IL 60005
(708) 956-0666/7
Table 2. Capacitor Manufacturers
MANUFACTURER
AVX Corporation
P.O. Box 887
Myrtle Beach, SC 29578
(803) 448-9411
Nichicon America Corporation
927 East State Parkway
Schaberg, IL 60173
(708) 843-7500
Sanyo Video Components
2001 Sanyo Avenue
San Diego, CA 92173
(619) 661-6385
Attn: Sales Dept.
IN
to drop to 6V. At this minimum input voltage
PART NUMBER
DT3316 Series
Econo-Pac
Octa-Pac
GA10 Series
CD 54 Series
CD 75 Series
PART NUMBER
TPS Series
TAJ Series
PL Series
OS-CON Series
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