LTC3545 LINER [Linear Technology], LTC3545 Datasheet - Page 6

• Manufacturer Part Number: LTC3545
• Description: Triple 800mA Synchronous Step-Down Regulator-2.25MHz
• Manufacturer: LINER [Linear Technology]

LTC3545/LTC3545-1
TYPICAL PERFORMANCE CHARACTERISTICS
6
(ALL 1V/DIV)
I
SUPPLY
5V/DIV
1A/DIV
V
V
V
RUNX
OUT1
OUT2
OUT3
Start-Up From Shutdown
Loaded
T
V
I
LOAD
A
IN
= 25°C
= 3.6V
= 600mA, ALL CHANNELS
0.30
0.60
0.50
0.40
0.20
0.10
0.60
0.50
0.40
0.30
0.20
0.10
0
0
2
PFET R
2
NFET R
200μs/DIV
T
T
T
T
T
T
T
T
T
T
A
A
A
A
A
A
A
A
A
A
DS(ON)
= 125°C
= 80°C
= 25°C
= 0°C
= –40°C
DS(ON)
= 125°C
= 80°C
= 25°C
= 0°C
= –40°C
3
3
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
vs Supply Voltage
vs Supply Voltage
4
4
3545 G13
5
5
50mA/DIV
I
SUPPLY
1V/DIV
1V/DIV
1V/DIV
V
V
V
OUT1
OUT2
OUT3
3545 G16
3545 G18
6
6
Start-Up From Shutdown
No Load
T
V
I
LOAD
A
IN
= 25°C
= 3.6V
= 0, ALL CHANNELS
200μs/DIV
0.30
0.50
0.45
0.40
0.35
0.25
0.20
0.15
0.10
0.30
0.05
0.50
0.45
0.40
0.35
0.25
0.20
0.15
0.10
0.05
0
0
–40
–40
NFET R
PFET R
3545 G14
DS(ON)
DS(ON)
100mV/DIV
I
50mA/DIV
LOAD
2mV/DIV
2mV/DIV
10
10
TEMPERATURE (°C)
TEMPERATURE (°C)
V
V
V
OUT2
OUT3
OUT1
CH1
vs Temperature
vs Temperature
Load Step Crosstalk
T
V
500mA LOAD STEP IN CHANNEL1
CHANNELS 2 AND 3 LOADED AT 400mA EACH
A
IN
= 25°C
60
= 3.6V
60
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
= 2.5V
= 3.5V
= 5.5V
= 2.5V
= 3.5V
= 5.5V
110
110
3545 G17
3545 G19
200μs/DIV
35451fb
3545 G15