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LTM8056 Fiches technique(PDF) 9 Page - Linear Technology

No de pièce LTM8056
Description  Low IQ, 60V Synchronous BoostBuck Controller
PDF  42 Pages
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo LINER - Linear Technology

LTM8056 Fiches technique(HTML) 9 Page - Linear Technology

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LTC7813
9
7813f
For more information www.linear.com/LTC7813
Typical perForMance characTerisTics
Buck Foldback Current Limit
Oscillator Frequency vs
Temperature
Undervoltage Lockout Threshold
vs Temperature
BOOST2 Charge Pump Charging
Current vs Frequency
BOOST2 Charge Pump Charging
Current vs Switch Voltage
Shutdown Current vs Temperature
Shutdown Current vs
Input Voltage
BOOST2 Charge Pump Output
Voltage vs SW2 Voltage
Quiescent Current vs Temperature
TEMPERATURE (°C)
-75
8
7
6
3
5
2
1
4
0
-25
25
-50
0
75 100
7813 G28
150
50
125
VBIAS = 12V
VBIAS INPUT VOLTAGE (V)
0
14
12
6
10
4
2
8
0
20
40
10
30
60
7813 G29
65
50
5
25
45
15
35
55
TEMPERATURE (°C)
–75 –50 –25 0
25 50 75 100 125 150
0
10
20
30
40
50
60
70
80
7813 G30
VBIAS = 12V
ONE CHANNEL ON
Burst Mode OPERATION
DRVSET = 70kΩ
DRVSET = INTVCC
DRVSET = GND
TEMPERATURE (°C)
-75
600
500
550
450
350
400
300
-25
25
-50
0
75 100
7813 G32
150
50
125
FREQ = INTVCC
FREQ = GND
TEMPERATURE (°C)
-75
8
5
5.5
4.5
3.5
4
7
7.5
6.5
6
3
-25
25
-50
0
75 100
7813 G33
150
50
125
RISING
RISING
FALLING
FALLING
DRVUV = INTVCC
DRVUV = GND
SW2 VOLTAGE (V)
5
10
2
8
6
4
9
7
5
3
0
1
65
25
45
55
15
35
60
20
40
50
10
30
150°C
25°C
–55°C
FREQ = 350kHz
10M LOAD BETWEEN BOOST2 AND SW2
7813 G34
OPERATING FREQUENCY (kHz)
100
100
90
70
80
60
30
50
20
10
40
0
200
400
300
600 700
7813 G35
800
500
VBOOST2 = 16.5V
VSW2 = 12V
–55°C
150°C
25°C
SW2 VOLTAGE (V)
0 5
120
90
100
110
80
50
20
70
40
60
30
10
0
65
25
45
55
15
35
60
20
40
50
10
30
7813 G36
VBOOST2 – VSW2 = 4.5V
–55°C
–55°C
150°C
25°C
150°C
VBOOST2 – VSW2 = 7.0V
25°C
FREQ = 350kHz
VFB1 FEEDBACK VOLTAGE (mV)
0
100
90
50
30
70
10
0
80
40
60
20
7813 G31
800
400
300
100
600 700
200
500
ILIM = INTVCC
ILIM = FLOAT
ILIM = GND



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