lt3471edd-trpbf Linear Technology Corporation, lt3471edd-trpbf Datasheet - Page 2

• Manufacturer Part Number: lt3471edd-trpbf
• Description: Dual 1.3a, 1.2mhz Boost/inverter In 3mm ? 3mm Dfn
• Manufacturer: Linear Technology Corporation

ABSOLUTE AXI U RATI GS
V
SW1, SW2 Voltage ....................................– 0.4V to 42V
FB1N, FB1P, FB2N, FB2P Voltage ....... 12V or V
SHDN/SS1, SHDN/SS2 Voltage .............................. 16V
V
Maximum Junction Temperature ......................... 125°C
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 125°C
LT3471
(Note 1)
temperature range, otherwise specifications are T
PARAMETER
Minimum Operating Voltage
Reference Voltage
Reference Voltage Current Limit
Reference Voltage Load Regulation
Reference Voltage Line Regulation
Error Amplifier Offset
FB Pin Bias Current
Quiescent Current
Quiescent Current in Shutdown
Switching Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Switch Current Limit
Switch V
Switch Leakage Current
SHDN/SS Input Voltage High
SHDN Input Voltage Low
SHDN Pin Bias Current
Note 1: Absolute Maximum Ratings are those values beyond which the life of
a device may be impaired.
Note 2: The LT3471E is guaranteed to meet performance specifications from
0°C to 70°C. Specifications over the –40°C to 85°C operating temperature
range are assured by design, characterization and correlation with statistical
process controls.
ELECTRICAL CHARACTERISTICS
2
IN
REF
Voltage .............................................................. 16V
Voltage ........................................................... 1.5V
CESAT
W
W W
CONDITIONS
(Note 3)
0mA ≤ I
2.6V ≤ V
Transition from Not Switching to Switching, V
V
V
V
At Minimum Duty Cycle
At Maximum Duty Cycle (Note 4)
I
V
Quiescent Current ≤ 1µA
V
V
SW
FB
SHDN
SHDN
SW
SHDN
SHDN
= 1V (Note 3)
= 0.5A (Note 5)
= 5V
= 1.8V, Not Switching
= 0.3V, V
= 3V, V
= 0V
REF
IN
≤ 16V
≤ 100µA (Note 3)
IN
IN
A
= 4V
U
= 25°C. V
= 3V
IN
– 1.5V
The
IN
●
= V
denotes specifications which apply over the full operating
SHDN
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Note 3: Current flows out of the pin.
Note 4: See Typical Performance Characteristics for guaranteed current
limit vs duty cycle.
Note 5: V
= 3V unless otherwise noted.
FB1N
FB1P
FB2P
FB2N
V
10-LEAD (3mm × 3mm) PLASTIC DFN
T
JMAX
REF
FBP
EXPOSED PAD (PIN 11) IS GND
= 125°C, θ
CESAT
MUST BE SOLDERED TO PCB
1
2
3
4
5
= V
FBN
DD PACKAGE
is 100% tested at wafer level only.
TOP VIEW
JA
= 1V
11
= 43°C/ W, θ
10
●
●
●
9
8
7
6
JC
SW1
SHDN/SS1
V
SHDN/SS2
SW2
= 3°C/ W
IN
0.991
0.987
MIN
1.5
0.9
1.8
90
86
1
1
U
1.000
DD PART MARKING
0.03
0.01
2.05
1.45
0.01
TYP
150
2.1
1.4
0.1
2.5
1.2
±2
60
94
15
22
0
ORDER PART
LT3471EDD
NUMBER
W
LBHM
1.009
1.013
MAX
0.08
100
250
2.4
0.2
1.4
2.6
2.0
0.3
0.1
±3
36
4
1
1
%/100µA
UNITS
U
3471fa
MHz
%/V
mA
mV
mA
mV
nA
µA
µA
µA
µA
%
%
%
V
V
V
A
A
V
V