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LTC1705 Datasheet(PDF) 2 Page - Linear Technology

No. de Pieza. LTC1705
Descripción  Dual 550kHz Synchronous Switching Regulator Controller with 5-Bit VID and 150mA LDO
Descarga  28 Pages
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Fabricante  LINER [Linear Technology]
Página de inicio  http://www.linear.com
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LTC1705 Datasheet(HTML) 2 Page - Linear Technology

 
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LTC1705
2
Supply Voltage
VCC, PVCC, VINCLK .................................................. 6V
BOOSTC, BOOSTIO ............................................. 12V
BOOSTC – SWC, BOOSTIO – SWIO ....................... 6V
Input Voltage
SWC, SWIO ................................................ –1V to 6V
SENSEC, FBC, FBIO, VID
n ....... – 0.3V to (VCC + 0.3V)
PGOOD, RUN/SS,
IMAXC, IMAXIO .................................. –0.3V to (VCC + 0.3V)
Peak Output Current <10
µs
TGC, BGC .............................................................. 5A
TGIO, BGIO ....................................................... 1.25A
Operating Temperature Range (Note 2) .. – 40
°C to 85°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
ORDER PART
NUMBER
TJMAX = 125°C, θJA = 80°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTC1705EGN
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
ELECTRICAL CHARACTERISTICS
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
VCC = PVCC = BOOST = 5V, VINCLK = 3.3V unless otherwise specified. (Note 3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
GN PACKAGE
28-LEAD PLASTIC SSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
IMAXIO
PVCC
BOOSTC
BGC
TGC
SWC
PGND
IMAXC
RUN/SS
COMPC
FBC
GND
SENSEC
VID0
BGIO
BOOSTIO
TGIO
SWIO
VINCLK
VOUTCLK
PGOOD
COMPIO
FBIO
VCC
VID4
VID3
VID2
VID1
(Note 1)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC
VCC Supply Voltage
q
3.15
5
5.5
V
PVCC
PVCC Supply Voltage
(Note 4)
q
3.15
5
5.5
V
BVCC
BOOST Pin Voltage
VBOOST – VSW (Note 4)
q
3.15
5
5.5
V
VINCLK
VINCLK Supply Voltage
q
3
3.3
5.5
V
IVCC
VCC Supply Current
Test Circuit 1
q
4.5
8
mA
RUN/SS = 0V
q
40
100
µA
IPVCC
PVCC Supply Current
VSENSEC = VFBIO = 0V, No Load at Drivers (Note 5) q
26
mA
RUN/SS = 0V (Note 6)
q
150
µA
IBOOST
IBOOSTC + IBOOSTIO
VSENSEC = VFBIO = 0V, No Load at Drivers (Note 5) q
26
mA
RUN/SS = 0V (Note 6)
q
150
µA
IVINCLK
VINCLK Supply Current
IVOUTCLK = 0mA
q
1
1.5
mA
RUN/SS = 0V
q
430
µA
VSHDN
RUN/SS Shutdown Threshold
VRUN/SS ↑ (Rising Edge)
q
0.2
0.5
V
ISS
RUN/SS Source Current
RUN/SS = 0V
– 3
µA
Core, I/O Supply Control Loops
VSENSEC Output Voltage Accuracy
Programmed from 0.9V to 2V
q
–1.25
1.25
%
VFBC
Core Feedback Voltage
(Note 10)
0.800
V
VFBIO
I/O Feedback Voltage
q
0.784
0.800
0.816
V
dVFB
Feedback Voltage Line Regulation
VCC = 3.3V to 5.5V
q
±0.01
±0.1
%/V
dVOUT
Output Voltage Load Regulation
(Note 7)
q
–0.2
–0.1
%
IFBIO
I/O Feedback Input Current
q
±1
µA


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