Datasheet

LTC3429/LTC3429B
4
3429fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Output Voltage vs Temperature
Normalized Oscillator Frequency
vs Temperature
Burst Mode Quiescent Current
vs Temperature (LTC3429 Only)
(T
A
= 25°C unless otherwise specified)
TEMPERATURE (°C)
–60
V
OUT
(V)
3.32
3.36
3.40
60
3429 G10
3.28
3.24
–29 20
–40 80
0 40 100
3.20
3.16
3.44
V
IN
= 1.5V
I
OUT
= 30mA
TEMPERATURE (°C)
–60
0.92
NORMALIZED FREQUECY
0.94
0.98
1.00
1.02
–20
20
40
3429 G11
0.96
–40 0
60
80
100
TEMPERATURE (°C)
–60
QUIESCENT CURRENT (µA)
20
30
100
3429 G12
10
0
–20
20
60
–40
0
40
80
40
15
25
5
35
V
OUT
= 5V
V
OUT
= 3.3V
SW Pin Fixed Frequency
Continuous Mode Operation
SW Pin Discontinuous Mode
Antiringing Operation
Fixed Frequency and Burst Mode
Operation (LTC3429 Only)
Output Voltage Transient
Response
Inrush Current Control
and Soft-Start
Inrush Current Control
and Soft-Start
V
SW
1V/DIV
V
IN
= 1.5V
V
OUT
= 3.3V
I
OUT
= 50mA
L = 10µH
C
OUT
= 10µF
C
PL
= 150pF
200ns/DIV
3429 G13
V
SW
1V/DIV
V
IN
= 1.5V
V
OUT
= 3.3V
I
OUT
= 20mA
L = 10µH
C
OUT
= 10µF
C
PL
= 150pF
200ns/DIV
3429 G14
V
OUT
100mV/DIV
AC-COUPLED
50mA
120µA
I
OUT
V
IN
= 1.5V
V
OUT
= 3.3V
I
OUT
= 120µA TO 50mA STEP
L = 10µH
C
OUT
= 10µF
C
PL
= 150pF
5ms/DIV
3429 G15
V
OUT
100mV/DIV
AC-COUPLED
90mA
40mA
I
OUT
V
IN
= 1.5V
V
OUT
= 3.3V
I
OUT
= 40mA TO 90mA STEP
L = 10µH
C
OUT
= 10µF
C
PL
= 150pF
100µs/DIV
3429 G16
V
OUT
1V/DIV
INDUCTOR
CURRENT
100mA/DIV
V
IN
= 1.5V
V
OUT
= 3.3V
I
OUT
= 10mA
L = 4.7µH
C
OUT
= 10µF
C
PL
= 100pF
500µs/DIV
3429 G17
V
OUT
2V/DIV
INDUCTOR
CURRENT
200mA/DIV
V
IN
= 2.5V
V
OUT
= 5V
I
OUT
= 50mA
L = 4.7µH
C
OUT
= 10µF
C
PL
= 100pF
2ms/DIV
3429 G18