LTC3788 Linear Technology, LTC3788 Datasheet - Page 8

• Manufacturer Part Number: LTC3788
• Description: Dual Output Synchronous Boost Controller
• Manufacturer: Linear Technology

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LTC3788
TYPICAL PERFORMANCE CHARACTERISTICS
8
600
550
500
450
400
350
300
120
100
–20
–40
–60
260
240
220
200
180
160
140
120
100
80
60
40
20
80
60
40
20
0
0
–45
0
0
Maximum Current Sense
Threshold vs I
SENSE Pin Input Current
vs I
Oscillator Frequency
vs Temperature
V
SENSE
SENSE
SENSE
FORCED CONTINUOUS MODE
–20
TH
0.2
0.5
PULSE SKIPPING MODE
+
–
Voltage
= 12V
PIN
OPERATION
PIN
Burst Mode
0.4
5
TEMPERATURE (°C)
1
I
I
FREQ = INTV
TH
TH
FREQ = GND
30
0.6
VOLTAGE (V)
VOLTAGE (V)
TH
1.5
Voltage
I
55
I
LIM
0.8
LIM
I
LIM
CC
= INTV
= FLOAT
I
I
I
I
I
2
LIM
LIM
LIM
LIM
LIM
I
= GND
80
1.0
LIM
= INTV
= INTV
= FLOAT
= GND
= FLOAT
CC
= GND
2.5
105
1.2
CC
CC
3788 G19
3788 G21
3788 G23
130
1.4
3
360
356
354
352
350
348
346
344
342
340
260
240
220
200
180
160
140
120
100
260
240
220
200
180
160
140
120
100
358
80
60
40
20
80
60
40
20
0
0
–45
2.5
5
Oscillator Frequency
vs Input Voltage
SENSE Pin Input Current
vs Temperature
SENSE Pin Input Current
vs V
V
I
FREQ = GND
SENSE
SENSE
LIM
SENSE
–20
V
7.5
10
= FLOAT
SENSE
SENSE
+
–
= 12V
PIN
PIN
12.5
15
COMMON MODE VOLTAGE (V)
5
INPUT VOLTAGE (V)
TEMPERATURE (°C)
Voltage
SENSE
SENSE
17.5
30
20
+
–
PIN
22.5
PIN
55
25
I
I
I
I
I
LIM
LIM
LIM
LIM
LIM
I
27.5 32.5
80
LIM
30
= INTV
= INTV
= FLOAT
= GND
= FLOAT
= GND
105
35
CC
CC
3788 G20
3788 G22
3788 G24
37.5
130
40
3788f