LTC3608(RevC) Просмотр технического описания (PDF) - Linear Technology
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Компоненты Описание
производитель
LTC3608 Datasheet PDF : 26 Pages
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LTC3608
Typical Application
PGND
14V to 18V Input to 12V/5A at 500kHz
CVCC
4.7µF, 6.3V
INTVCC
SW
CF RF1
0.1µF 1Ω
25V
40 39 38 37 36 35 34 33 32 31 30 29 28 27
VIN2
EXTVCC
C4
0.01µF
SGND
VOUT
12V AT
5A
C5
22µF
25V
(OPTIONAL)
GND
COUT1 +
180µF
16V
L1
4.3µH
VIN
14V TO 18V
VIN
GND
CIN
C6 +
10µF
10µF
25V
35V
3×
(OPTIONAL)
41 SW
42 SW
43 SW
44 SW
45 SW
46 SW
47 SW
48 PVIN
49 PVIN
50 PVIN
51 PVIN
52 PVIN
LTC3608
SGND 26
NC 25
NC 24
VFB 23
ION 22
NC 21
SGND 20
FCB 19
ITH 18
VRNG 17
PGOOD 16
SGND 15
CIN: TAIYO YUDEN TMK432BJ106MM
COUT: SANYO 16SVP180MX
L1: CDEP85NP-4R3MC-88
KEEP POWER GROUND AND SIGNAL GROUND SEPARATE.
CONNECT AT ONE POINT.
= PGND
= SGND
1 2 3 4 5 6 7 8 9 10 11 12 13 14
INTVCC
DB
CMDSH-3
CB1
0.22µF
CSS
0.1µF
RUN/SS
R1
3.16k
1%
R2
C1
60.4k
1%
(OPTIONAL) RON
1M
1%
CON
0.01µF
(OPTIONAL)
(OPTIONAL)
C2
VOUT
VIN
R5
24.9k
CC1
3300pF
90.9k
10k
INTVCC
RPG1
100k
INTVCC
CC2
100pF
SGND
RSS1
510k
VIN
(OPTIONAL)
(OPTIONAL)
CVON
INTVCC
3608 TA05
Transient Response
Efficiency Curve
100
95
DCM
90
IL
5A/DIV
85
CCM
80
75
VOUT
200mV/DIV
70
65
20µs/DIV
LOAD STEP 1A-8A
VIN = 18V
VOUT = 12V
FCB = 0V
3608 TA05a
60
55
50
100
VIN = 18V
FREQ = 500kHz
1000
1000
LOAD CURRENT (A)
10000
3608 TA05b
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26 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 l FAX: (408) 434-0507 l www.linear.com
COMMENTS
Up to 97% Efficiency, VIN: 4V to 36V, 0.8V ≤ VOUT ≤ (0.9)(VIN), IOUT Up
to 20A
95% Efficiency, VIN: 2.25V to 5.5V, VOUT(MIN) = 0.8V, IQ = 64µA, ISD:
<1µA, TSSOP20E Package
95% Efficiency, VIN: 2.25V to 5.5V, VOUT(MIN) = 0.8V, Thermally
Enhanced 38-Lead QFN Package
Up to 24V Input (28V Maximum). Current Mode Extremely Fast
Transient Response
92% Efficiency, VIN: 4.5V to 28V, VOUT: 0.6V, True Current Mode
Control, Ultrafast Transient Response
92% Efficiency, VIN: 4.5V to 28V, VOUT: 0.6V, True Current Mode
Control, Ultrafast Transient Response
93% Efficiency, VIN: 4.5V to 28V, with PLL, Output Tracking and
Margining with Ultrafast Transient Response
3608fc
LT 0610 REV C • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2008
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