Datasheet
2
LTC1703
1703fa
(Note 1)
Supply Voltage
V
CC
...........................................................................................
7V
BOOST
n...............................................................
15V
BOOST
n
– SW
n
.................................................... 7V
Input Voltage
SW
n
.......................................................... – 1V to 8V
VID
n
....................................................... – 0.3V to 7V
All Other Inputs ......................... – 0.3V to V
CC
+ 0.3V
Peak Output Current < 10µs
TG
n
, BG
n
............................................................... 5A
Operating Temperature Range
LTC1703C .............................................. 0°C to 85°C
LTC1703I........................................... – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
ORDER PART
NUMBER
T
JMAX
= 125°C, θ
JA
= 55°C/ W
LTC1703CG
LTC1703IG
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
G PACKAGE
28-LEAD PLASTIC SSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
PV
CC
BOOST1
BG1
TG1
SW1
I
MAX1
FCB
RUN/SS1
COMP1
SGND
FB1
SENSE
VID0
VID1
I
MAX2
BOOST2
BG2
TG2
SW2
PGND
FAULT
RUN/SS2
COMP2
FB2
V
CC
VID4
VID3
VID2
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Main Control Loop
V
CC
V
CC
Supply Voltage ● 37V
PV
CC
PV
CC
Supply Voltage (Note 2) ● 37V
BV
CC
BOOST Pin Voltage V
BOOST
– V
SW
(Note 2) ● 2.7 7 V
I
CC
V
CC
Supply Current Test Circuit 1 ● 2.2 8 mA
RUN/SS1 = RUN/SS2 = 0V (Note 5) ● 30 100 µA
IPV
CC
PV
CC
Supply Current Test Circuit 1 (Note 4) ● 2.2 6 mA
RUN/SS1 = RUN/SS2 = 0V (Note 5) ● 6 100 µA
I
BOOST
BOOST Pin Current Test Circuit 1 (Note 4) ● 1.3 3 mA
RUN/SS1 = RUN/SS2 = 0V ● 0.1 10 µA
V
FB
Feedback Voltage Test Circuit 1, LTC1703C ● 0.792 0.800 0.808 V
Test Circuit 1, LTC1703I ● 0.790 0.800 0.810 V
∆V
FB
Feedback Voltage Line Regulation V
CC
= 3V to 7V ● ±0.005 ±0.05 %/V
I
FB
Feedback Current FB2 Only (Note 8) ● ±0.001 ±1 µA
∆V
OUT
Output Voltage Load Regulation (Note 6) ● 0.1 ±0.2 %
V
FCB
FCB Threshold ● 0.75 0.8 0.85 V
∆V
FCB
FCB Feedback Hysteresis 20 mV
I
FCB
FCB Pin Current ● ±0.001 ±1 µA
V
RUN
RUN/SS Pin RUN Threshold ● 0.45 0.55 0.65 V
I
SS
Soft Start Source Current RUN/SS
n
= 0V – 1.5 – 3.5 – 5.5 µA
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25°C.
V
CC
= 5V unless otherwise specified. (Note 3)
ELECTRICAL CHARACTERISTICS
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/