LTC1266 Linear Technology, LTC1266 Datasheet - Page 5

• Manufacturer Part Number: LTC1266
• Description: Synchronous Regulator Controller for N- or P-Channel MOSFETs
• Manufacturer: Linear Technology

TYPICAL PERFOR
100
100
3.0
2.5
2.0
1.5
1.0
0.5
95
90
80
75
70
85
80
60
40
20
0
0
Efficiency vs Input Voltage
0
0
Off-Time vs Output Voltage
0
V
FIGURE 11 CIRCUIT
IN
LTC1266-3.3
DC Supply Current
4
4
1
I
LOAD
OUTPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
= 100mA
8
8
2
ACTIVE MODE
SLEEP MODE
I
LOAD
LTC1266-5
12
= 1A
12
3
V
SENSE
I
LOAD
W
LTC1266 • TPC10
16
16
LTC1266 • TPC04
LTC1266 • TPC07
–
4
= 2.5A
= V
A
OUT
U
20
20
5
CE
C
HARA TERISTICS
– 40
–10
–20
–30
3.0
2.5
2.0
1.5
1.0
0.5
25
20
15
10
40
30
20
10
5
0
0
0
0
0
0
Operating Frequency
vs (V
Line Regulation
Power V
V
FIGURE 11 CIRCUIT
I
LOAD
OUT
2
IN
= 3.3V
= 1A
C
4
4
– V
(V
ACTIVE MODE
IN
4
SLEEP MODE
IN
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
OUT
DC Supply Current
– V
6
8
OUT
) Voltage
8
) VOLTAGE (V)
8
0 C
25 C
12
10
12
70 C
12
LTC1266 • TPC05
16
LTC1266 • TPC08
LTC1266 • TPC11
14
16
LTC1266-3.3/LTC1266-5
20
16
–10
–20
–40
–30
–50
200
150
100
30
20
10
50
40
30
20
10
50
0
0
0
0
0
Load Regulation
0
Current Sense Threshold Voltage
Supply Current in Shutdown
FIGURE 11 CIRCUIT
0.5
MIN THRESHOLD (Burst Mode
20
OPERATION ENABLED)
MIN THRESHOLD (Burst Mode
V
IN
5
OPERATION INHIBIT)
OPERATION ENABLED)
LOAD CURRENT (A)
= 12V (Burst Mode
V
1.0
INPUT VOLTAGE (V)
TEMPERATURE ( C)
IN
MAX THRESHOLD
= 5V
40
1.5
V
OPERATION INHIBITED)
10
IN
V
PWR V
LTC1266
= 5V (Burst Mode
IN
60
2.0
IN
15
LTC1266 • TPC06
80
2.5
LTC1266 • TPC09
LTC1266 • TPC12
5
3.0
100
20