LTC3735 LINER [Linear Technology], LTC3735 Datasheet - Page 6

• Manufacturer Part Number: LTC3735
• Description: 2-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs
• Manufacturer: LINER [Linear Technology]

LTC3735
TYPICAL PERFORMANCE CHARACTERISTICS
6
700
600
500
400
300
200
100
78
76
74
72
70
68
– 50
–50 –25
Maximum Current Sense
Threshold vs Temperature
Oscillator Frequency
vs Temperature
– 25
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
–0.2
–0.3
–0.4
–0.1
0.0
V
V
25
25
V
FREQSET
FREQSET
FREQSET
0
Load Regulation (Without AVP)
50
50
= 2.4V
= 1.2V
= 0V
5
75
75
LOAD CURRENT (A)
100
100
10
3735 G13
3735 G19
125
125
15
20mV/DIV
V
OUT(AC)
1A/DIV
1A/DIV
V
V
FIGURE 1
20
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
PSIB
IN
I
I
0
L1
L2
–50
= 15V
3735 G10
RUN/SS Current vs Temperature
Constant Frequency Low Current
Mode (Figure 14)
= 5V
V
V
IN
PSIB
25
–25
= 15V, V
= 0V
0
OUT
TEMPERATURE (°C)
= 1.6V, I
25
2µs/DIV
LOAD
50
= 400mA
–100
75
–50
100
50
0
0
100
SENSE Pins Total Source Current
3735 G14
3735 G17
V
SENSE
125
MCH –PGOOD
COMMON MODE VOLTAGE (V)
500mV/DIV
V
2
CC – CORE
PGOOD
2V/DIV
2V/DIV
2V/DIV
–10
–12
–11
V
–7
–9
–8
RON
–50 –25
Current Sense Pin Input Current
vs Temperature
V
Start-Up Sequence (Figure 14)
OUT
4
= 1.6V
C1 MAX
3.28V
0
TEMPERATURE (°C)
C2 MAX
V
1.37V
3735 G12
BOOT
25
500µs/DIV
6
C3 MAX
3.24V
= 1.37V
50
C4 MAX
75
3.20V
V
ID
100
= 1.228V
3735 G18
3735fa
3735 G16
125