lt3692a Linear Technology Corporation, lt3692a Datasheet - Page 6

• Manufacturer Part Number: lt3692a
• Description: Monolithic Dual Tracking 3.5a Step-down Switching Regulator
• Manufacturer: Linear Technology Corporation

LT3692A
TYPICAL PERFORMANCE CHARACTERISTICS
6
400
350
300
250
200
150
100
160
150
140
130
120
110
100
60
50
90
80
70
0
–50
–50
Comparator Sink Current
vs Temperature
CLKOUT-to-SW1 Delay
vs Temperature
SINK CURRENT AT V
–25
–25
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50
CMPO
50
50
DIV Voltage Threshold
vs Temperature
–25
= 0.4V
75
75
100
100 125 150
0
TEMPERATURE (°C)
125
25
3692a G09
3692a G12
150
50
÷8
÷4
÷2
75
100
1800
1600
1400
1200
1000
800
600
400
200
450
400
350
300
250
200
150
100
50
0
0
–50
–50
125
3695a G15
Switching Frequency
vs Temperature
RT/SYNC-to-CLKOUT and SW1
Delay vs Temperature
–25
–25
150
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
R
R
R
RT/SYNC
RT/SYNC
RT/SYNC
25
R
25
RT/SYNC
CLKOUT
SW1
50
50
= 44.2k
= 28.0k
= 13.0k
= 0k
75
75
100
100
300
200
150
250
100
50
0
125
125
–50
3692a G10
3695a G13
Switch Saturation Voltage
vs Temperature
150
150
–25
0
TEMPERATURE (°C)
25
I
SW
195
193
191
189
187
185
183
181
179
177
175
100
I
I
90
80
70
60
50
40
30
20
10
SW
SW
0
= 500mA
–50
–50
50
Switching Phase vs Temperature
Synchronization Duty Cycles
vs Temperature
= 3A
= 1A
RT/SYNC FREQUENCY = 1MHz
–25
–25
75
MAXIMUM RT/SYNC DUTY CYCLE
MINIMUM RT/SYNC DUTY CYCLE
100
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
25
125
25
3692a G16
50
50
150
75
75
100
100 125 150
125
3692a G11
3692a G14
3692af
150