LTC3221-5 Linear Technology, LTC3221-5 Datasheet - Page 4

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

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LTC3221/
LTC3221-3.3/LTC3221-5
TYPICAL PERFOR A CE CHARACTERISTICS
4
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
3.18
3.16
70
60
50
40
30
20
10
0
16
14
12
10
8
6
4
2
0
0
Output Ripple vs Load Current
1.5
0
Load Regulation
No-Load Input Current vs
Supply Voltage
T
A
= 25°C
2.0
V
20
20
IN
T
C
T
= 1.8V
A
OUT
LOAD CURRENT (mA)
A
LOAD CURRENT (mA)
SUPPLY VOLTAGE (V)
= 90°C
= –45°C
2.5
40
= 2.2µF
40
3.0
60
V
C
60
IN
OUT
= 2.5V
3.5
80
= 4.7µF
W
80
V
IN
100
4.0
= 3.2V
3221 G13
3221 G10
3221 G07
100
U
120
4.5
(AC-COUPLED)
20mV/DIV
0.001
0.01
V
120
110
100
0.1
OUT
90
80
70
60
50
40
10
1
0.01
1.5
Output Load Capability at 4%
Below Regulation
Extra Input Current vs Load
Current (I
V
V
Output Ripple
V
I
C
LOAD
OUT
IN
IN
OUT
= 2.5V
= 2V
= 3.168V
= 4.7µF, 6.3V, SIZE 0603
= 60mA
2.0
0.1
SUPPLY VOLTAGE (V)
LOAD CURRENT (mA)
IN
-2 I
T
LOAD
1µs/DIV
A
2.5
T
= 90°C
A
1
= –45°C
)
3.0
10
T
A
= 25°C
3221 G08
3221 G14
(LTC3221-3.3 only)
3221 G11
3.5
100
(AC-COUPLED)
20mV/DIV
I
OUT
100
90
80
70
60
50
40
30
20
10
15
14
13
12
11
10
60mA
V
0
0mA
9
8
7
6
5
–50
OUT
1.8
Effective Open-Loop Output
Resistance vs Temperature
Effi ciency vs Supply Voltage
V
V
I
IN
OUT
OUT
Load Transient Response
V
I
C
LOAD
= 1.8V
IN
OUT
2.0
–25
= 3V
= 30mA
= 2V
= 4.7µF, 6.3V, SIZE 0603
= 0mA TO 60mA STEP
THEORETICAL MAX
2.2
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
0
I
OUT
2.4
= 1mA
25
5µs/DIV
2.6
50
2.8
75
3.0
3221 G09
3221 G12
3221 G15
3221f
100
3.2