LTC3735EUHF Linear Technology, LTC3735EUHF Datasheet - Page 6

• Manufacturer Part Number: LTC3735EUHF
• Description: IC CTRLR DC/DC 2PH HI EFF 38-QFN
• Manufacturer: Linear Technology

Specifications of LTC3735EUHF

• Applications: Controller, Intel Mobile CPU
• Number Of Outputs: 1
• Voltage - Output: 0.7 ~ 1.71 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 38-QFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Input: -

LTC3735
TYPICAL PERFOR A CE CHARACTERISTICS
6
700
600
500
400
300
200
100
76
70
68
78
74
72
– 50
–50 –25
Maximum Current Sense
Threshold vs Temperature
Oscillator Frequency
vs Temperature
– 25
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
–0.3
–0.4
–0.1
–0.2
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
W
LOAD CURRENT (A)
100
100
10
3735 G13
3735 G19
U
125
125
15
20mV/DIV
V
OUT(AC)
1A/DIV
1A/DIV
V
V
FIGURE 1
20
PSIB
IN
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
I
I
L1
L2
= 15V
0
–50
3735 G10
= 5V
Constant Frequency Low Current
Mode (Figure 14)
RUN/SS Current vs Temperature
V
V
IN
PSIB
25
= 15V, V
–25
= 0V
OUT
0
TEMPERATURE (°C)
= 1.6V, I
25
2μs/DIV
LOAD
50
= 400mA
75
–100
–50
100
50
0
100
0
SENSE Pins Total Source Current
3735 G14
3735 G17
V
125
SENSE
MCH –PGOOD
500mV/DIV
V
COMMON MODE VOLTAGE (V)
CC – CORE
PGOOD
2V/DIV
2V/DIV
2V/DIV
2
V
RON
–12
–11
–10
–9
–8
–7
–50 –25
Current Sense Pin Input Current
vs Temperature
Start-Up Sequence (Figure 14)
V
OUT
C1 MAX
3.28V
= 1.6V
4
0
C2 MAX
TEMPERATURE (°C)
V
1.37V
BOOT
3735 G12
500μs/DIV
25
C3 MAX
3.24V
= 1.37V
6
50
C4 MAX
3.20V
75
V
ID
= 1.228V
100
3735 G18
3735 G16
3735f
125