LTC3412 LINER [Linear Technology], LTC3412 Datasheet - Page 5

• Manufacturer Part Number: LTC3412
• Description: 2.5A, 4MHz, Monolithic Synchronous Step-Down Regulator
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFOR A CE CHARACTERISTICS
1050
1040
1030
1020
1010
1000
120
110
100
350
300
250
200
150
100
990
90
80
70
60
50
40
30
20
50
0
–40 –20
–40 –20
2.5
Switch On-Resistance
vs Temperature
DC Supply Current vs Temperature
Frequency vs Input Voltage
V
R = 309k
V
IN
IN
PFET ON-RESISTANCE
NFET ON-RESISTANCE
= 3.3V
= 3.3V
3
0
0
TEMPERATURE (°C)
INPUT VOLTAGE (V)
TEMPERATURE (°C)
3.5
20
20
ACTIVE
SLEEP
40
40
4
60
60
4.5
80 100 120
80 100 120
W
5
3412 G13
3412 G19
3412 G16
U
5.5
1010
1008
1006
1004
1002
1000
2.5
2.0
1.5
1.0
0.5
4000
3500
3000
2500
2000
1500
1000
998
996
994
992
990
500
0
2.5
0
–40 –20
Switch Leakage vs Input Voltage
SYNCHRONOUS SWITCH
Switching Frequency
vs Temperature
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Minimum Peak Inductor Current
vs Burst Clamp Voltage
V
V
IN
IN
3
= 3.3V
= 3.3V
BURST CLAMP VOLTAGE (V)
0
INPUT VOLTAGE (V)
3.5
TEMPERATURE (°C)
20
MAIN SWITCH
4
40
60
4.5
80 100 120
5
3412 G14
3412 G17
3412 G20
5.5
4500
4000
3500
3000
2500
2000
1500
1000
500
350
300
250
200
150
100
6.8
6.6
6.4
6.2
6.0
5.8
5.6
5.4
50
0
2.75
2.5
50 150 250 350 450 550 650 750 850 950
Current Limit vs Input Voltage
Frequency vs R
DC Supply Current
vs Input Voltage
3.25
3
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
3.5
3.75
R
ACTIVE
SLEEP
OSC
OSC
LTC3412
4
4.25
(kΩ)
4.5
4.75
V
IN
5
= 3.3V
5.25
3412 G21
3412 G15
3412 G18
3412fb
5
5.5