ltc3787gn Linear Technology Corporation, ltc3787gn Datasheet - Page 8

• Manufacturer Part Number: ltc3787gn
• Description: Ltc3787 - Polyphase Synchronous Boost Controller
• Manufacturer: Linear Technology Corporation

LTC3787
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
20
80
60
40
80
60
40
20
0
0
–45
0
Maximum Current Sense
Threshold vs I
SENSE Pin Input Current
vs I
Oscillator Frequency
vs Temperature
0
V
SENSE
SENSE
SENSE
FORCED CONTINUOUS MODE
TH
–20
0.2
0.5
PULSE-SKIPPING MODE
Voltage
+
–
= 12V
OPERATION
PIN
PIN
Burst Mode
0.4
5
TEMPERATURE (°C)
1
I
I
FREQ = INTV
TH
TH
FREQ = GND
0.6
30
TH
VOLTAGE (V)
VOLTAGE (V)
1.5
Voltage
I
55
LIM
I
0.8
LIM
I
LIM
CC
= INTV
= FLOAT
I
I
I
I
I
2
LIM
LIM
LIM
LIM
LIM
I
= GND
1.0
LIM
80
= INTV
= INTV
= FLOAT
= GND
= FLOAT
CC
= GND
2.5
105
1.2
CC
CC
3787 G19
3787 G21
3787 G23
130
1.4
3
360
356
354
352
350
348
346
344
342
340
358
260
240
220
200
180
160
140
120
100
260
240
220
200
180
160
140
120
100
80
60
40
20
80
60
40
20
0
0
–45
5
2.5
Oscillator Frequency
vs Input Voltage
SENSE Pin Input Current
vs Temperature
SENSE Pin Input Current
vs V
FREQ = GND
V
I
SENSE
SENSE
LIM
SENSE
V
–20
10
SENSE
7.5
= FLOAT
SENSE
+
–
= 12V
PIN
PIN
12.5
15
COMMON MODE VOLTAGE (V)
5
INPUT VOLTAGE (V)
TEMPERATURE (°C)
Voltage
SENSE
SENSE
17.5
20
30
+
–
PIN
22.5
25
PIN
55
I
I
I
I
I
LIM
LIM
LIM
LIM
LIM
I
27.5 32.5
30
80
LIM
= INTV
= INTV
= FLOAT
= GND
= FLOAT
= GND
105
35
CC
CC
3787 G20
3787 G22
3787 G24
37.5
130
40
3787fa