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LTC1736 Datenblatt(PDF) 4 Page - Linear Technology

Teilenummer LTC1736
Bauteilbeschribung  Wide Operating Range, No RSENSE Step-Down Controller
PDF  24 Pages
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Hersteller  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1736 Datenblatt(HTML) 4 Page - Linear Technology

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LTC1778/LTC1778-1
1778fb
TYPICAL PERFOR A CE CHARACTERISTICS
LOAD CURRENT (A)
0.001
70
80
10
1778 G03
60
50
0.01
0.1
1
100
90
DISCONTINUOUS
MODE
CONTINUOUS
MODE
VIN = 10V
VOUT = 2.5V
EXTVCC = 5V
FIGURE 9 CIRCUIT
Efficiency vs Load Current
Efficiency vs Input Voltage
INPUT VOLTAGE (V)
0
80
85
90
95
100
510
15
20
1778 G04
25
30
ILOAD = 1A
ILOAD = 10A
FCB = 5V
FIGURE 9 CIRCUIT
Frequency vs Input Voltage
INPUT VOLTAGE (V)
5
240
260
25
1778 G05
220
200
10
15
20
300
280
IOUT = 10A
FCB = 0V
FIGURE 9 CIRCUIT
IOUT = 0A
Load Regulation
LOAD CURRENT (A)
0
–0.2
–0.1
8
1778 G06
–0.3
–0.4
2
4
6
10
0
FIGURE 9 CIRCUIT
ITH Voltage vs Load Current
LOAD CURRENT (A)
0
1.0
1.5
1778 G07
0.5
0
5
10
15
2.5
2.0
CONTINUOUS
MODE
DISCONTINUOUS
MODE
FIGURE 9 CIRCUIT
Transient Response
(Discontinuous Mode)
Transient Response
VOUT
50mV/DIV
IL
5A/DIV
20µs/DIV
1778 G01
LOAD STEP 0A TO 10A
VIN = 15V
VOUT = 2.5V
FCB = 0V
FIGURE 9 CIRCUIT
VOUT
50mV/DIV
IL
5A/DIV
20µs/DIV
1778 G02
LOAD STEP 1A TO 10A
VIN = 15V
VOUT = 2.5V
FCB = INTVCC
FIGURE 9 CIRCUIT
Start-Up
RUN/SS
2V/DIV
IL
5A/DIV
50ms/DIV
1778 G19
VIN = 15V
VOUT = 2.5V
RLOAD = 0.25Ω
VOUT
1V/DIV
LOAD CURRENT (A)
0
0
50
100
150
200
250
300
246
8
1778 G26
10
CONTINUOUS MODE
DISCONTINUOUS
MODE
Frequency vs Load Current



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