Datasheet

LTC3827-1
5
38271fe
Load Step
(Burst Mode Operation)
Load Step
(Forced Continuous Mode)
Load Step
(Pulse Skip Mode)
Inductor Current at Light Load
Soft Start-Up Tracking Start-Up
TYPICAL PERFORMANCE CHARACTERISTICS
Total Input Supply Current
vs Input Voltage
EXTV
CC
Switchover and INTV
CC
Voltages vs Temperature INTV
CC
Line Regulation
20µs/DIV
V
OUT
100mV/DIV
AC
COUPLED
I
L
2A/DIV
38271 G04
FIGURE 13 CIRCUIT
V
OUT
= 3.3V
20µs/DIV
V
OUT
100mV/DIV
AC
COUPLED
I
L
2A/DIV
38271 G05
FIGURE 13 CIRCUIT
V
OUT
= 3.3V
20µs/DIV
V
OUT
100mV/DIV
AC
COUPLED
I
L
2A/DIV
38271 G06
FIGURE 13 CIRCUIT
V
OUT
= 3.3V
4µs/DIV
FORCED
CONTINUOUS
MODE
2A/DIV
BURST MODE
PULSE
SKIPPING
MODE
38271 G07
FIGURE 13 CIRCUIT
V
OUT
= 3.3V
I
LOAD
= 300µA
20ms/DIV
38271 G08
V
OUT2
2V/DIV
V
OUT1
2V/DIV
FIGURE 13 CIRCUIT
20ms/DIV
38271 G09
V
OUT2
2V/DIV
V
OUT1
2V/DIV
FIGURE 13 CIRCUIT
INPUT VOLTAGE (V)
5
350
300
250
200
150
100
50
0
20 30
38271 G10
10 15
25 35
SUPPLY CURRENT (µA)
300µA LOAD
NO LOAD
FIGURE 13 CIRCUIT
TEMPERATURE (°C)
–45
4.0
EXTV
CC
AND INTV
CC
VOLTAGES (V)
4.2
4.6
4.8
5.0
6.0
5.4
–5
35
55
38271 G11
4.4
5.6
5.8
5.2
–25
15
75 95
EXTV
CC
FALLING
EXTV
CC
RISING
INTV
CC
INPUT VOLTAGE (V)
0
5.00
INTV
CC
VOLTAGE (V)
5.05
5.15
5.20
5.25
5.50
5.35
10
20
25
38271 G12
5.10
5.40
5.45
5.30
515
30
35
40