Datasheet

LT3467/LT3467A
3
3467afe
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3467E/LT3467AE are guaranteed to meet performance
specifi cations from 0°C to 85°C, junction temperature. Specifi cations over
the –40°C to 85°C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
The LT3467I/LT3467AI are guaranteed over the full –40°C to 125°C
operating junction temperature range.
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
IN
= 3V, V
SHDN
= V
IN
unless otherwise noted. Specifi cations are for both
the LT3467 and LT3467A unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage 2.2 2.4 V
Maximum Operating Voltage 16 V
Feedback Voltage
l
1.230
1.220
1.255 1.270
1.280
V
V
FB Pin Bias Current (Note 3)
l
10 50 nA
Quiescent Current V
SHDN
= 2.4V, Not Switching 1.2 2 mA
Quiescent Current in Shutdown V
SHDN
= 0.5V, V
IN
= 3V 0.01 1 μA
Reference Line Regulation 2.6V ≤ V
IN
≤ 16V 0.01 0.05 %/V
Switching Frequency LT3467
LT3467A
LT3467A
l
1
1.6
1.6
1.3
2.1
1.6
2.7
MHz
MHz
MHz
Maximum Duty Cycle LT3467
LT3467
LT3467A
LT3467A
l
l
88
87
82
78
94
88
%
%
%
%
Minimum Duty Cycle 10 %
Switch Current Limit At Minimum Duty Cycle
At Maximum Duty Cycle (Note 4)
1.4
0.8
1.8
1.2
2.5
1.9
A
A
Switch V
CESAT
I
SW
= 1.1A 330 500 mV
Switch Leakage Current V
SW
= 5V 0.01 1 μA
SHDN Input Voltage High 2.4 V
SHDN Input Voltage Low 0.5 V
SHDN Pin Bias Current V
SHDN
= 3V
V
SHDN
= 0V
16
0
32
0.1
μA
μA
SS Charging Current V
SS
= 0.5V 2 3 4.5 μA
Note 3: Current fl ows out of the pin.
Note 4: See Typical Performance Characteristics for guaranteed current
limit vs duty cycle.