LTC1147CS8-5#PBF Linear Technology, LTC1147CS8-5#PBF Datasheet - Page 4

• Manufacturer Part Number: LTC1147CS8-5#PBF
• Description: IC SW REG STEP-DOWN 5V 8-SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1147CS8-5#PBF

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5V
• Current - Output: 50mA
• Frequency - Switching: 400kHz
• Voltage - Input: 3.5 ~ 14 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

LTC1147-3.3
LTC1147-5/LTC1147L
TYPICAL PERFOR A CE CHARACTERISTICS
4
100
92
98
96
94
90
88
86
84
82
80
2.1
1.8
1.5
1.2
0.9
0.6
0.3
14
12
10
0
8
6
0
4
2
0
Efficiency vs Input Voltage
20
0
Gate Charge Supply Current
DC Supply Current
FIGURE 1 CIRCUIT
NOT INCLUDING
GATE CHARGE CURRENT
2
OPERATING FREQUENCY (kHz)
4
80
4
Q
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
P
= 50nC
6
ACTIVE MODE
SLEEP MODE
Q
140
8
I
LOAD
8
P
= 29nC
10
= 100mA
I
LOAD
12
200
12
= 1A
W
14
LTC1147 • G01
LTC1147 • G04
LTC1147 • G07
16
260
16
U
18
–20
–30
–40
–10
60
50
30
12
80
70
40
20
10
20
18
16
14
10
40
30
20
10
0
8
6
4
0
2
0
Off-Time vs V
0
Supply Current in Shutdown
Line Regulation
0
0
V
(NOT AVAILABLE ON LTC1147L)
FIGURE 1 CIRCUIT
I
LOAD
SHUTDOWN
2
LTC1147-3.3
= 1A
1
4
4
OUTPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
= 2V
6
OUT
2
8
8
10
LTC1147-5
3
V
12
12
SENSE
14
–
4
LTC1147 • G08
LTC1147 • G05
LTC1147 • G02
= V
16
16
OUT
18
5
–100
–20
–40
–60
–80
20
100
175
150
125
0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
75
50
25
0
0
0
Load Regulation
Operating Frequency
vs (V
0
Current Sense Threshold Voltage
0
V
OUT
IN
0.5
2
= 5V
20
– V
(V
V
V
LOAD CURRENT (A)
IN
IN
IN
OUT
TEMPERATURE ( C)
= 12V
4
1.0
– V
= 6V
40
)
OUT
) VOLTAGE (V)
6
FIGURE 1 CIRCUIT
R
1.5
SENSE
THRESHOLD
THRESHOLD
25 C
60
MAXIMUM
MINIMUM
0 C
8
= 0.05
sn1147 1147fds
2.0
70 C
LTC1147 • G03
80
LTC1148 • G06
LTC1147 • G09
10
2.5
100
12