Datasheet
2
LTC1702A
1702afa
ABSOLUTE MAXIMUM RATINGS
W
WW
U
(Note 1)
Supply Voltage
V
CC
...........................................................................................
7V
BOOST
n...............................................................
15V
BOOST
n
– SW
n
.................................................... 7V
Input Voltage
SW
n
.......................................................... – 1V to 8V
All Other Inputs ......................... –0.3V to V
CC
+ 0.3V
Peak Output Current < 10µs
TG
n
, BG
n
............................................................... 5A
Operating Temperature Range
LTC1702AC ............................................. 0°C to 70°C
LTC1702AI ........................................ – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
W
U
U
ELECTRICAL CHARACTERISTICS
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)
1
2
3
4
5
6
7
8
9
10
11
12
TOP VIEW
GN PACKAGE
24-LEAD NARROW PLASTIC SSOP
24
23
22
21
20
19
18
17
16
15
14
13
PV
CC
BOOST1
BG1
TG1
SW1
I
MAX1
PGOOD1
FCB
RUN/SS1
COMP1
SGND
FB1
I
MAX2
BOOST2
BG2
TG2
SW2
PGND
PGOOD2
FAULT
RUN/SS2
COMP2
FB2
V
CC
T
JMAX
= 125°C, θ
JA
= 100°C/ W
LTC1702ACGN
LTC1702AIGN
ORDER PART NUMBER
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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/
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, C
L
= 0pF ● 2.2 8 mA
RUN/SS1 = RUN/SS2 = 0V (Note 5)
● 30 100 µA
IPV
CC
PV
CC
Supply Current Test Circuit 1, C
L
= 0pF (Note 4) ● 2.2 6 mA
RUN/SS1 = RUN/SS2 = 0V (Note 5)
● 6 100 µA
I
BOOST
BOOST Pin Current Test Circuit 1, C
L
= 0pF (Note 4) ● 1.3 3 mA
RUN/SS1 = RUN/SS2 = 0V
● 0.1 10 µA
V
FB
Feedback Voltage Test Circuit 1, C
L
= 0pF, LTC1702AC ● 0.792 0.800 0.808 V
Test Circuit 1, C
L
= 0pF, LTC1702AI ● 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 ● ±0.001 ±1 µA
∆V
OUT
Output Voltage Load Regulation (Note 6) ● 0.1 ±0.2 %