ltc1143l-adj Linear Technology Corporation, ltc1143l-adj Datasheet - Page 4

• Manufacturer Part Number: ltc1143l-adj
• Description: Dual High Efficiency So-16 Step-down Switching Regulator Controllers
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
LTC1143/LTC1143L
LTC1143L-ADJ
4
100
2.1
1.8
1.5
1.2
0.9
0.6
0.3
100
95
90
85
80
75
70
98
96
94
92
90
88
86
84
82
80
0
0
1
0
3.3V Efficiency vs Input Voltage
DC Supply Current
5V Output Efficiency
NOT INCLUDING
GATE CHARGE CURRENT
2
I
LOAD
4
4
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
10
V
INPUT VOLTAGE (V)
= 100mA
IN
6
= 6V
ACTIVE MODE
PER REGULATOR BLOCK
SLEEP MODE
V
IN
8
8
= 10V
10
100
I
LOAD
12
12
V
= 1A
OUT
PINS 5, 13
W
14
LTC1143 • G07
LTC1143 G01
= 3.3V
LTC1143 G04
16
1000
16
U
18
100
–10
–20
–30
–40
95
90
85
80
75
70
40
30
20
10
20
18
16
14
12
10
0
8
6
4
2
0
1
3.3V Output Efficiency
0
Line Regulation
Supply Current in Shutdown
0
PER LTC1143/LTC1143L
REGULATOR BLOCK
PINS 5, 13
V
V
I
LOAD
SHUTDOWN
OUT
2
V
= 5V
IN
= 1A
4
4
= 5V
LOAD CURRENT (mA)
10
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
= 2V
6
8
8
10
100
V
IN
12
12
= 10V
14
LTC1143 G02
LTC1143 G05
LTC1143 G08
1000
16
16
18
–100
100
–40
–60
–80
–20
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
98
96
94
92
90
88
86
84
82
80
20
0
0
0
0
0
Load Regulation
Operating Frequency vs V
5V Efficiency vs Input Voltage
V
OUT
2
0.5
= 5V
4
V
V
(V
OUT
OUT
V
IN
INPUT VOLTAGE (V)
IN
LOAD CURRENT (A)
4
V
= 5V
= 3.3V
– V
= 6V
IN
1.0
OUT
= 6V
I
8
LOAD
) VOLTAGE (V)
6
70°C
0°C
= 100mA
1.5
I
LOAD
R
12
SENSE
8
V
IN
V
V
= 1A
IN
OUT
IN
= 12V
2.0
= 0.05
25°C
10
LTC1143 G09
= 12V
– V
LTC1143 G06
= 5V
16
1143 G03
OUT
2.5
12