LTC1148CS-3.3#TR Linear Technology, LTC1148CS-3.3#TR Datasheet - Page 6
![IC REG SW 3.3V STDN HIEFF 14SOIC](/photos/6/87/68753/14-soic_05-08-1610_sml.jpg)
LTC1148CS-3.3#TR
Manufacturer Part Number
LTC1148CS-3.3#TR
Description
IC REG SW 3.3V STDN HIEFF 14SOIC
Manufacturer
Linear Technology
Type
Step-Down (Buck)r
Datasheet
1.LTC1148CSPBF.pdf
(20 pages)
Specifications of LTC1148CS-3.3#TR
Internal Switch(s)
No
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
3.3V
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
FU CTIO AL DIAGRA
LTC1148
LTC1148-3.3/LTC1148-5
6
TEST CIRCUIT
U
SLEEP
SGND
S
11
U
+
–
390pF
V
TH2
10nF
C
+
4
T
V
TH1
V
IN
1k
3300pF
–
+
+
Q
W
CONTROL
OFF-TIME
T
+
V
R
S
7
1µF
Pin 9 connection shown for LTC1148-3.3 and LTC1148-5; changes create LTC1148.
1
2
3
4
5
6
7
V
SENSE
V
IN
FB
P-DRIVE
NC
V
C
INTV
I
SENSE
TH
IN
T
–
CC
LTC1148
–
SHUTDOWN
N-DRIVE
NC (V
SENSE
PGND
SGND
1000pF
14
12 PGND
3 V
1 P-DRIVE
NC
FB
+
C
)
N-DRIVE
IN
I
TH
+
–
14
13
12
11
10
9
8
25mV TO 150mV
6
+
–
V
10
+
+
13k
SHUTDOWN
V
TO
V
50µH
7
8
IRF9Z34
R
0.05Ω
10
SENSE
V
G
+
+
–
–
REFERENCE
25k
75k
1N5818
IRFZ34
SENSE
1.25V
8
V
OS
+
ADJUSTABLE
100pF
VERSION
5
V
+
+
9
FB
INTV
330µF
440µF
CC
SENSE
V
OUT
7
100k
–
LTC1148 • FD
114835fd
5pF