LTC1148CN-5#PBF Linear Technology, LTC1148CN-5#PBF Datasheet - Page 20

• Manufacturer Part Number: LTC1148CN-5#PBF
• Description: IC SW REG STEP-DOWN 5V 14-DIP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1148CN-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: Through Hole
• Package / Case: 14-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

LTC1148
LTC1148-3.3/LTC1148-5
TYPICAL
RELATED PARTS
20
PART NUMBER
LTC1142
LTC1143
LTC1147
LTC1149
LTC1159
LTC1174
LTC1265
LTC1435A
LTC1538-AUX
Figure 18. All N-Channel 5V/8A High Efficiency Regulator
(Burst Mode Operation Suppressed)
C
820pF
T
+
R
510Ω
C
C
3300pF
C
1µF
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
**DALE LVR-3-0.01
*COILTRONICS CTX33-10-KM
1
2
3
4
5
6
7
APPLICATION
P-DRIVE
NC
V
C
INTV
I
SENSE
TH
DESCRIPTION
Dual High Efficiency Synchronous Step-Down Switching Regulator
Dual High Efficiency Step-Down Switching Regulator Controller
High Efficiency Step-Down Switching Regulator Controller
High Efficiency Synchronous Step-Down Switching Regulator
High Efficiency Synchronous Step-Down Switching Regulator
High Efficiency Step-Down and Inverting DC/DC Converter
1.2A, High Efficiency Step-Down DC/DC Converter
High Efficiency Low Noise Synchronous Step-Down Switching Regulator
Dual High Efficiency, Low Noise, Synchronous Step-Down
Switching Regulator
IN
T
LTC1148HV-5
CC
–
SHUTDOWN
●
FAX: [phone]
N-DRIVE
SENSE
PGND
SGND
2N3906
20k
NC
NC
+
14
13
12
11
10
9
8
VN2222LL
MUR110
220Ω
SHUTDOWN
22k
U
2N2222
1000pF
100Ω
100Ω
33µH
220Ω
*L
●
www.linear.com
N-CH
IRFZ44
R
0.01Ω
SENSE
**
IRFZ44
1N5818
1N4148
+
470nF
N-CH
D1
10V TO 18V
LTC1148 • F18
C
2200µF
16V
× 3
+
V
OUT
IN
C
2700µF
35V
× 2
IN
V
5V/8A
OUT
For additional high efficiency application
circuits, see Application Notes 54, 58 and 66
Figure 19. All N-Channel 5V/8A Efficiency
100
COMMENTS
Dual LTC1148
Nonsynchronous Dual Output
Nonsynchronous Equivalent to LTC1148, 8-Pin
V
V
Nonsynchronous 8-Pin Internal Switch
Nonsynchronous Internal Switch
Synchronous N-Channel, Constant Frequency
Auxiliary Linear Regulator, 5V Standby in Shutdown
90
80
70
60
IN
IN
0.1
< 48V, Standard Threshold MOSFETs
< 40V, Logic Level MOSFETs
V
IN
= 10V
LOAD CURRENT (A)
V
IN
© LINEAR TECHNOLOGY CORPORATION 1993
1
= 14V
LT/TP 0604 1K REV D • PRINTED IN USA
LTC1148 • F19
10
114835fd