LTC3221-5 Linear Technology, LTC3221-5 Datasheet - Page 5

• Manufacturer Part Number: LTC3221-5
• Description: Micropower
• Manufacturer: Linear Technology

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TYPICAL PERFOR A CE CHARACTERISTICS
90
80
70
40
30
60
50
20
10
5.10
5.05
5.00
4.95
4.90
4.85
4.80
0
16
14
12
10
0
Output Ripple vs Load Current
8
6
4
2
0
V
2.7
IN
Load Regulation
0
No-Load Input Current vs
Supply Voltage
= 3V
20
3.0
20
C
T
OUT
A
= 25°C
LOAD CURRENT (mA)
LOAD CURRENT (mA)
= 2.2µF
SUPPLY VOLTAGE (V)
V
3.3
40
IN
40
= 2.7V
T
C
A
OUT
= 90°C
60
3.6
60
= 4.7µF
V
IN
T
3.9
80
A
= 3.6V
= –45°C
W
80
V
IN
100
4.2
3221 G13
= 4.2V
3221 G19
3221 G16
U
100
120
4.5
(AC-COUPLED)
50mV/DIV
0.001
V
0.01
120
110
100
OUT
0.1
90
80
70
60
50
40
10
1
0.01
2.7
Output Load Capability at 4%
Below Regulation
Extra Input Current vs Load
Current (I
Output Ripple
V
I
C
V
V
LOAD
IN
OUT
OUT
IN
= 3V
= 3V
= 4.7µF, 6.3V, SIZE 0603
= 4.8V
= 60mA
3.0
0.1
LOAD CURRENT (mA)
SUPPLY VOLTAGE (V)
IN
T
A
-2 I
= 90°C
3.3
1µs/DIV
LOAD
1
T
A
)
3.6
= –45°C
T
A
10
= 25°C
3.9
LTC3221-3.3/LTC3221-5
(LTC3221-5 only)
3221 G17
3221 G23
3221 G20
4.2
100
(AC-COUPLED)
I
50mV/DIV
OUT
100
60mA
90
80
70
60
50
40
30
20
10
V
15
14
13
12
11
10
0mA
0
9
8
7
6
5
OUT
–50
2.7
Effective Open-Loop Output
Resistance vs Temperature
Effi ciency vs Supply Voltage
V
V
I
Load Transient Response
IN
OUT
V
I
C
OUT
LOAD
IN
OUT
= 2.7V
–25
= 3V
= 4.5V
3.0
= 1mA
= 4.7µF, 6.3V, SIZE 0603
= 0mA TO 60mA STEP
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
3.3
0
I
OUT
LTC3221/
THEORETICAL MAX
5µs/DIV
25
= 30mA
3.6
50
3.9
75
4.2
3221 G18
3221 G21
3221 G24
5
3221f
100
4.5