LTC3203 LINER [Linear Technology], LTC3203 Datasheet - Page 5

• Manufacturer Part Number: LTC3203
• Description: 500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps
• Manufacturer: LINER [Linear Technology]

AC-COUPLED
TYPICAL PERFOR A CE CHARACTERISTICS
AC-COUPLED
AC-COUPLED
I
100mV/DIV
OUT
20mV/DIV
20mV/DIV
160
140
120
100
80
40
60
20
500mA
100mA
0
2.5
V
V
No-Load Input Current vs Supply
Voltage (LTC3203/LTC3203-1)
OUT
OUT
V
IN
Load Transient (2x Mode)
V
C
C
2x MODE
Input and Output Ripple
(1.5x Mode)
V
C
C
I
1.5x MODE
OUT
IN
IN
OUT
IN
IN
OUT
3
= 3.6V
= 2.2µF
= 4V
= 2.2µF
= 300mA
= 10µF
= 10µF
3.5
1.5x MODE
2x MODE
V
IN
4
20µs/DIV
(V)
500ns/DIV
4.5
W
5
3203 G10
U
5.5
3203 G16
3203 G13
AC-COUPLED
AC-COUPLED
20mV/DIV
20mV/DIV
500
450
400
350
300
250
200
150
100
50
0
0.94
0.93
0.92
0.91
0.90
0.89
0.88
2.5
V
Burst Mode Current Threshold
vs Supply Voltage
(LTC3203/LTC3203-1)
OUT
V
2.5
IN
V
(LTC3203/LTC3203B)
Input and Output Ripple
(2x Mode)
V
C
C
I
2x MODE
FB
OUT
IN
IN
OUT
3
= 3.6V
= 2.2µF
Set Point vs Supply Voltage
T
= 300mA
3
= 10µF
A
= –40°C
3.5
3.5
1.5x MODE
V
IN
4
V
500ns/DIV
(V)
IN
4
(V)
T
T
4.5
A
A
= 25°C
= 85°C
4.5
2x MODE
5
3203 G11
LTC3203B/LTC3203B-1
5
3203 G17
5.5
3203 G14
5.5
LTC3203/LTC3203-1
AC-COUPLED
I
100mV/DIV
OUT
0.01
500mA
100mA
100
0.96
0.94
0.92
0.90
0.88
0.86
0.84
0.82
0.1
10
V
1
0.01
OUT
Extra Input Current vs Load
Current (LTC3203/LTC3203-1)
V
(LTC3203/LTC3202B)
0
Load Transient (1.5x Mode)
V
C
C
1.5x MODE
FB
IN
IN
OUT
50
vs Load Current
= 4V
= 2.2µF
0.1
= 10µF
100 150
I
IN
– 2 • I
2x MODE
V
2x MODE
I
1
200
LOAD
IN
I
LOAD
LOAD
= 3.6V
20µs/DIV
250
(mA)
(mA)
10
300
1.5x MODE
1.5x MODE
I
IN
V
IN
– 1.5 • I
350
= 4V
100
400
LOAD
3209 G12
450 500
32031fa
3203 G18
5
3203 G15
1000