LTC1148HVCS-5 Linear Technology, LTC1148HVCS-5 Datasheet - Page 6

• Manufacturer Part Number: LTC1148HVCS-5
• Description: IC SW REG STEP-DOWN 5V 14-SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1148HVCS-5

• 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: -

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