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LTC7803 Datasheet(PDF) 7 Page - Analog Devices

Part # LTC7803
Description  40V Low IQ, 3MHz Synchronous Step-Down Controller with Spread Spectrum
PDF  36 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC7803 Datasheet(HTML) 7 Page - Analog Devices

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LTC7803
7
Rev 0
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
Soft-Start Pull-Up Current
vs Temperature
Shutdown Current vs Temperature
Shutdown Current vs Input Voltage
Quiescent Current vs Temperature
RUN Pin Thresholds vs Temperature
Undervoltage Lockout Threshold
vs Temperature
INTVCC Line Regulation
INTVCC Line Regulation
INTVCC and EXTVCC vs Load Current
TEMPRATURE (°C)
–55 –25
5
35
65
95
125 155
10.0
10.5
11.0
11.5
12.0
12.5
13.0
13.5
14.0
14.5
15.0
vs Temperature
Soft–Start Pull–up Current
7803 G10
TEMPRATURE (°C)
–55 –25
5
35
65
95
125 155
0
1
2
3
4
5
6
7
8
9
10
Shutdown Current vs Temperature
7803 G11
VIN = VBIAS
INPUT VOLTAGE (V)
0
5
10
15
20
25
30
35
40
0
0.5
1.0
1.5
2.0
2.5
3.0
vs Input Voltage
Shutdown Current
7803 G12
TEMPRATURE (°C)
–55 –25
5
35
65
95
125 155
0
5
10
15
20
25
30
35
40
45
50
Quiescent Current vs Temperature
7803 G13
RUN FALLING
RUN RISING
TEMPRATURE (°C)
–55 –25
5
35
65
95
125 155
1.00
1.05
1.10
1.15
1.20
1.25
1.30
vs Temperature
RUN Pin Threshold
7804 G14
INTVCC RISING
INTVCC FALLING
TEMPERATURE (°C)
–55
25
5
35
65
95
125 155
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
4.6
4.8
5.0
vs Temperature
Undervoltage Lockout Threshold
7803 G15
NO LOAD
INPUT VOLTAGE (V)
0
5
10
15
20
25
30
35
40
4.5
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
INTVCC Line Regulation
7803 G16
NO LOAD
INPUT VOLTAGE (V)
4.50
4.75
5
5.25
5.50
5.75
6
4.5
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
INTVCC Line Regulation
7803 G17
EXTVCC = 0V
EXTVCC = 8.5V
EXTVCC = 5V
VBIAS = 12V
LOAD CURRENT (mA)
0
10
20
30
40
50
60
70
80
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
vs Load Current
INTVCC and EXTVCC
7803 G18



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