LTC1148CS-5#PBF Linear Technology, LTC1148CS-5#PBF Datasheet - Page 18

• Manufacturer Part Number: LTC1148CS-5#PBF
• Description: IC SW REG STEP-DOWN 5V 14-SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1148CS-5#PBF

• 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: Lead free / RoHS Compliant
• Power - Output: -

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
114835fd