LTC1148CS-5#TR Linear Technology, LTC1148CS-5#TR Datasheet - Page 18
![IC REG SW 5V STPDWN HIEFF 14SOIC](/photos/6/87/68753/14-soic_05-08-1610_sml.jpg)
LTC1148CS-5#TR
Manufacturer Part Number
LTC1148CS-5#TR
Description
IC REG SW 5V STPDWN HIEFF 14SOIC
Manufacturer
Linear Technology
Type
Step-Down (Buck)r
Datasheet
1.LTC1148CSPBF.pdf
(20 pages)
Specifications of LTC1148CS-5#TR
Internal Switch(s)
No
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
5V
Current - Output
50mA
Frequency - Switching
250kHz
Voltage - Input
3.5 ~ 20 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
14-SOIC (3.9mm Width), 14-SOL
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
LTC1148
LTC1148-3.3/LTC1148-5
18
TYPICAL APPLICATIO S
V
OUT
1N4148
C
390pF
T
Figure 16. 4V to 14V Input Voltage to 5V/1A Regulator with Current Foldback
Figure 17. Logic Selectable 5V/1A or 3.3V/1A High Efficiency Regulator
R
1k
C
10nF
C
390pF
C
3300pF
+
T
C
1µF
+
R
1k
**KRL NP-1A-C1-0R082J
C
*LOW ESR REQUIRED
C
3300pF
U
1
2
3
4
5
6
7
C
1µF
P-DRIVE
NC
V
C
INTV
I
SENSE
TH
IN
T
**KRL SL-1-C1-0R050R
*COILTRONICS CTX50-2-MP
CC
1
2
3
4
5
6
7
LTC1148
–
SHUTDOWN
P-DRIVE
NC
V
C
INTV
I
SENSE
TH
IN
T
N-DRIVE
SENSE
CC
PGND
SGND
LTC1148
–
V
NC
SHUTDOWN
FB
+
N-DRIVE
0.1µF
SENSE
14
13
12
11
10
9
8
PGND
SGND
V
NC
FB
SHUTDOWN
+
14
13
12
11
10
9
8
NDS9435A
SHUTDOWN
1000pF
50µH
50µH
*L
L2
R
0.05Ω
Si4435DY
R
0.082Ω
SENSE
SENSE
MBRS140T3
NDS9410A
100pF
**
**
D1
+
Si4412DY
5.2V TO 14V
220µF*
10V
OS-CON
+
R1A
33k
1%
V
4V TO 14V
IN
+
V
IN
C
100µF
20V
IN
R1B
43k
1%
R2
56k
1%
C
100µF
20V
IN
VN2222LL
D1
MBRS140T3
100pF
50µH
+
L1
0V: V
5V: V
LTC1148 • F17
C
220µF
10V
× 2
OS-CON
LTC1148 • F16
OUT
OUT
OUT
R2
75k
1%
R1
25k
1%
= 3.3V
= 5V
V
3.3V/2A
OR 5V/2A
OUT
+
C
220µF
10V
OS-CON
OUT
V
5V/1A
OUT
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