LTC1148CS#PBF Linear Technology, LTC1148CS#PBF Datasheet - Page 17
![IC SW REG STEP-DWN HI-EFF 14SOIC](/photos/7/58/75864/ltc1148cs_pbf_sml.jpg)
LTC1148CS#PBF
Manufacturer Part Number
LTC1148CS#PBF
Description
IC SW REG STEP-DWN HI-EFF 14SOIC
Manufacturer
Linear Technology
Type
Step-Down (Buck)r
Datasheet
1.LTC1148CSPBF.pdf
(20 pages)
Specifications of LTC1148CS#PBF
Internal Switch(s)
No
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
Adjustable
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
Pin Count
14
Input Voltage
3.5 to 20V
Output Current
50mA
Package Type
SOIC N
Mounting
Surface Mount
Operating Temperature Classification
Commercial
Operating Temperature (min)
0C
Operating Temperature (max)
70C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
TYPICAL APPLICATIO S
Figure 13. 5V Input Voltage, 3.3V/2A Low Dropout, High
Efficiency Regulator
C
270pF
T
+
R
1k
C
C
3300pF
1µF
C
**IRC LR2512-01-R050-G
*COILTRONICS CTX25-5 Kool Mµ CORE
1
2
3
4
5
6
7
P-DRIVE
NC
V
C
INTV
I
SENSE
TH
IN
T
LTC1148L-3.3
CC
–
SHUTDOWN
N-DRIVE
SENSE
C
560pF
PGND
SGND
T
NC
NC
+
MMSF3P02HD
14
13
12
11
10
9
8
SHUTDOWN
10nF
+
1000pF
Figure 15. 4V to 9V Input Voltage to – 5V/1A Regulator
25µH
R
1k
U
C
C
6800pF
*L
C
1µF
R
0.05Ω
SENSE
MMSF5N02HD
**KRL SL-1-C1-0R050J
MBRS140T3
*COILTRONICS CTX50-2-MP
1
2
3
4
5
6
7
**
P-DRIVE
NC
V
C
INTV
I
SENSE
D1
TH
IN
T
0V: SHUTDOWN
+
CC
V
LTC1148
3.5V TO 14V
–
IN
LTC1148 • F13
SHUTDOWN
: ACTIVE
C
220µF
10V
× 2
AVX
+
V
OUT
IN
N-DRIVE
SENSE
PGND
SGND
C
100µF
20V
IN
V
3.3V/2A
V
NC
OUT
FB
+
14
13
12
11
10
9
8
Si4431DY
TP0610L
1000pF
1M
C
270pF
NPO
T
50µH
Figure 14. High Efficiency 5V to 3.3V/4.5A Converter
*L
R
470Ω
C
C
3300pF
C
0.1µF
R
0.05Ω
SENSE
MBRS140T3
Si4412DY
**KRL SP-1-C1-0R020
*COILTRONICS CTX10-5P
1
2
3
4
5
6
7
**
D1
LTC1148-3.3/LTC1148-5
P-DRIVE
NC
V
C
INTV
I
SENSE
TH
IN
T
200pF
LTC1148-3.3
4V TO 9V
CC
+
–
V
IN
SHUTDOWN
N-DRIVE
C
220µF
20V
SENSE
R1
25k
1%
R2
75k
1%
IN
LTC1148 • F15
PGND
SGND
NC
NC
+
1000pF
+
14
13
12
11
10
9
8
Si9803DY
C
220µF
10V
× 2
OS-CON
OUT
SHUTDOWN
V
–5V/1.4A
OUT
10µH
*L
R
0.02Ω
SENSE
MBRS140T3
Si9804DY
LTC1148
**
D1
+
LTC1148 • F14
C
220µF
10V
AVX
× 2
+
V
OUT
5V
IN
17
C
100µF
20V
× 2
114835fd
IN
V
3.3V/4.5A
OUT