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LTC7803 датащи(PDF) 39 Page - Analog Devices

номер детали LTC7803
подробное описание детали  40V, Low IQ, 3MHz, Triple Output Buck/Buck/Boost Controller
PDF  42 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

LTC7803 датащи(HTML) 39 Page - Analog Devices

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LTC7811
39
Rev. 0
For more information www.analog.com
TYPICAL APPLICATIONS
Figure 10. High Efficiency Wide Input Range Dual 5V/3.3V Regulator
(a)
(c)
(d)
(b)
L3
2.2µH
6m
10µF
0.1µF
6m
20
22µF
6.3V
X7R
100µF
10µF
47µF
63V
0.1µF
9m
357k
68.1k
10µF
10V
X7R
100µF
6.3V
68.1k
4.7µF
D2
D1
220pF
10nF
4.87k
47pF
1.5nF
11k
100k
47pF
3.3nF
6.49k
1nF
1nF
1nF
0.1µF
0.1µF
0.1µF
100µF
215k
L1
2.2µH
L2
4.9µH
2V TO 38V*
(>5V START-UP)
LTC7811
VBIAS
BG3
BATTSNS
BATTERY GOOD INDICATOR
SENSE3+
VFB3
ITH1
SENSE3–
SW1
BG1
TG1
BOOST1
SENSE1+
VFB1
SENSE1–
VIN
VOUT1
3.3V/6A
VOUT3
9.5V WHEN VIN<9.5V
FOLLOWS VIN WHEN VIN>9.5V
SW2
BG2
TG2
BOOST2
SENSE2+
VFB2
SENSE2–
EXTVCC
VOUT2
5V/4A
INTVCC
VPRG3
PLLIN/SPREAD
FREQ
VOUT3
MODE
GND
INTVCC
INTVCC
RUN1 RUN2 RUN3
TRACK/SS1
TRACK/SS2
SS3
ITH2
ITH3
INTVCC
VOUT2
x2
50V
x3
50V
PGOOD1
BATTGOOD
MTOP1,2: INFINEON BSZ097N04LS
MBOT1,2: INFINEON BSZ097N04LS
MBOT3: INFINEON BSC059N04LS
L1: WURTH 744313220
L2: WURTH 744314490
L3: WURTH 744313220
MTOP1
MBOT1
MTOP2
MBOT2
D3
MBOT3
D1,2: CENTRAL SEMI CMDSH-4E
CIN: SUNCON 63CE100LX
COUT1,2: PANASONIC EEFCT0J101R
COUT3: SUNCON 63HVPF47M
fSW = 380kHz
* WHEN VIN < 4V, MAXIMUM LOAD CURRENT AVAILABLE IS REDUCED
* OUTPUT CURRENT CAPABILITY AT HIGH INPUT VOLTAGES MAY BE LIMITED BY THE THERMAL
CHARACTERISTICS OF THE OVERALL SYSTEM AND PRINTED CIRCUIT BOARD DESIGN
CIN
COUT3
COUT1
COUT2
IMON3
7811 TA02
D3: DIODES INC PDS1040Q
Efficiency vs Load Current
No-Load Burst Mode Input
Current vs Input Voltage
Short-Circuit Response
VOUT1 = 3.3V
VOUT2 = 5V
Burst Mode OPERATION
ALL THREE CHANNELS ON
VIN = 12V
VIN = 24V
VIN = 12V
VIN = 24V
LOAD CURRENT (A)
0
1
2
3
4
5
6
65
70
75
80
85
90
95
100
Efficiency vs Load Current
7811 F10b
ONLY CHANNEL 1 ON
ALL CHANNELS ON
VIN VOLTAGE (V)
5
10
15
20
25
30
35
40
0
10
20
30
40
50
60
70
vs Input Voltage
No–Load Burst Mode Input Current
7811 F10c
Short–Circuit Response
VIN = 12V
40µs/DIV
VOUT2
2V/DIV
GND
INDUCTOR
CURRENT
2A/DIV
7811 F10d



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