Datasheet

LTC3416
4
3416fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
DC Supply Current
vs Input VoltageFrequency vs Temperature
Efficiency vs Load Current,
Forced Continuous
TEMPERATURE (°C)
–40
60
1090
1070
1050
1030
1010
990
970
950
930
910
3416 G07
–20 12002040 80
100
FREQUENCY (kHz)
V
IN
= 3.3V
R
OSC
= 294k
INPUT VOLTAGE (V)
2.25
400
350
300
250
200
150
100
50
0
3.75 4.75
3416 G08
2.75 3.25
4.25 5.25
QUIESCENT CURRENT (µA)
Load Step Transient
Efficiency vs Input Voltage
INPUT VOLTAGE (V)
2.5
EFFICIENCY (%)
3.0
3.5
4.0 4.5
3416 G10
5.0
98
96
94
92
90
88
86
84
82
80
78
5.5
I
OUT
= 1A
I
OUT
= 4A
V
OUT
= 2.5V
T
A
= 25°C
Load Regulation
LOAD CURRENT (A)
∆V
OUT
/V
OUT
(%)
3416 G11
0
–0.20
–0.40
–0.60
–0.80
–1.00
–1.20
–1.40
0
1.0
2.0
2.5
0.5 1.5
3.0
3.5
4.0
V
IN
= 3.3V
V
OUT
= 1.8V
3416 G12
V
IN
= 3.3V, V
OUT
= 1.8V
f = 2MHz
LOAD STEP = 0A TO 4A
V
OUT
INDUCTOR
CURRENT
2A/DIV
20µs/DIV
3416 G13
V
IN
= 3.3V, V
OUT
= 1.8V
TRACKING 2.5V
5ms/DIV
Tracking: Start-Up and Shutdown
LOAD CURRENT (A)
0.01
40
EFFICIENCY (%)
50
60
70
80
0.10 1 10
3416 G09
30
20
10
0
90
100
V
IN
= 2.5V
V
IN
= 3.3V
V
OUT
= 1.8V
f = 2MHz