LT3505 LINER [Linear Technology], LT3505 Datasheet - Page 5

• Manufacturer Part Number: LT3505
• Description: Monolithic Dual Tracking 3A Step-Down Switching
• Manufacturer: LINER [Linear Technology]

Typical perForMance characTerisTics
1000
1650
1600
1450
1350
1550
1500
1400
950
900
850
800
750
700
650
600
550
500
–2
–1
–3
–4
4
3
2
1
0
–50
–50
–50
Soft-Start to Feedback Offset
Voltage vs Temperature
Power Good Sink Current
vs Temperature
Switching Frequency and Channel
Phase vs Temperature
R
RT
–25
–25
/SYNC = 15.4k
–25
PHASE
FREQUENCY
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
25
50
50
50
75
75
75
100
100
100
3501 G14
3501 G08
3501 G11
125
125
125
200
195
180
150
190
185
175
170
165
160
155
1000
250
230
210
190
170
150
130
110
900
400
800
700
600
500
90
70
50
–50
–50
Minimum Switching Times
vs Temperature
V
vs Temperature
2500
2000
1500
1000
500
C
0
Switching Threshold Voltage
–25
–25
–50 –25
MINIMUM ON-TIME
Synchronization Clock Frequency
Range vs Temperature
0
V
0
TEMPERATURE (°C)
TEMPERATURE (°C)
OUT
= 0V
25
25
V
0
SYNCHRONIZATION
SYNCHRONIZATION
TEMPERATURE (°C)
OUT
MINIMUM OFF-TIME
FREQUENCY
FREQUENCY
MAXIMUM
MINIMUM
= 5V
50
25
50
50
75
75
100
100
75
3501 G09
3501 G12
100
125
125
3501 G15
125
800
780
760
740
720
700
680
660
640
620
600
300
290
280
270
260
250
240
230
220
210
200
–50
–50
Switching Frequency and Channel
Phase vs Temperature
Power Good Threshold Voltage
vs Temperature
R
188
186
164
182
180
178
176
174
172
170
168
T
/SYNC = 133k
PHASE
–25
FREQUENCY
–25
–50
Channel Phase vs Temperature
with External Synchronization
–25
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
FALLING
RISING
25
25
0
TEMPERATURE (°C)
SYNCHRONIZATION
FREQUENCY = 250kHz
SYNCHRONIZATION
FREQUENCY = 1500kHz
50
50
25
50
75
75
LT3501
100
100
75
3501 G10
3501 G13
100
125
125
3501fd
3501 G16
200
190
180
170
160
150
140
130
120
110
100
5
125