LTC1159CG Linear Technology, LTC1159CG Datasheet - Page 4

• Manufacturer Part Number: LTC1159CG
• Description: IC SW REG STEP-DWN HI-EFF 20SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1159CG

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: Adjustable
• Current - Output: 50mA
• Frequency - Switching: 250kHz
• Voltage - Input: 4 ~ 40 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

LTC1159
LTC1159-3.3/LTC1159-5
ELECTRICAL C
Note 6: The LTC1159C, LTC1159C-3.3, and LTC1159C-5 are not tested
and not quality assurance sampled at – 40 C and 85 C. These
specifications are guaranteed by design and/or correlation. The LTC1159I,
LTC1159I-3.3 and LTC1159I-5 are guaranteed and tested over the – 40 C
to 85 C operating temperature range.
TYPICAL PERFOR A CE CHARACTERISTICS
4
100
95
85
80
90
10
8
6
4
2
0
0
0
Efficiency vs Input Voltage
EXTV
FIGURE 1 CIRCUIT
I
FIGURE 1 CIRCUIT
LOAD
5
5
CC
= 1A
10
Pin Current
10
INPUT VOLTAGE (V)
I
INPUT VOLTAGE (V)
LOAD
I
15
LOAD
15
I
LOAD
= 1A
20
= 100mA
20
= 0
HARA TERISTICS
25
25
30
30
W
LTC1159 • TPC04
LTC1159 • TPC01
NOTE 6
NOTE 6
35
35
C
U
40
40
–40
–60
–20
500
400
300
200
100
60
20
40
0
0
0
0
Line Regulation
V
FIGURE 1 CIRCUIT
I
IN
FIGURE 1 CIRCUIT
LOAD
Pin Current
5
5
= 1A
10
10
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
15
15
NORMAL
V
SHDN2
Note 7: The logic-level power MOSFETs shown in Figure 1 are rated for
V
MOSFETs with EXTV
Information.
20
20
DS(MAX)
= 2V
25
25
= 30V. For operation at V
30
30
LTC1159 • TPC05
NOTE 6
LT1159 • TPC02
NOTE 6
35
35
40
40
CC
powered from a 12V supply. See Applications
–100
–20
–40
–60
–80
1.0
0.5
2.0
1.5
20
0
0
0
0
Load Regulation
Operating Frequency
vs (V
IN
V
> 30V, use standard threshold
OUT
IN
0.5
= 5V
5
– V
(V
IN
LOAD CURRENT (A)
OUT
– V
1.0
10
OUT
)
T = 0 C
T = 70 C
) VOLTAGE (V)
1.5
FIGURE 1 CIRCUIT
V
15
IN
= 24V
T = 25 C
2.0
20
LTC1159 • TPC03
LTC1159 • TPC06
2.5
25