Datasheet

LT3487
3
3487f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
IN
= 3.6V, V
BAT
= 3.6V, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Schottky DP Forward Drop I
SWP
= 400mA 1045 mV
Schottky DN Forward Drop I
SWN
= 600mA 980 mV
Disconnect PNP V
CE
I
VPOS
= 50mA 205 mV
Disconnect Current Limit V
CAP
= 15V, V
POS
= 0V 100 155 mA
V
CAP
– V
BAT
to Disconnect V
BAT
= 3.6V, V
POS
= 0V, I
CAP
< 100µA 1.2 1.6 V
Disconnect Leakage V
BAT
= 3.6V, CAP = 3.6V, V
POS
= 0V 0.1 1.0 µA
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 LT3487E is guaranteed to meet specifi ed performance from
0°C to 85°C. Specifi cations over the –40°C to 85°C operating range are
assured by design, characterization and correlation with statistical process
controls.
Shutdown Quiescent Current Positive Output to Enable Inverter FBP Voltage
Note 3: Guaranteed by design, not directly tested.
Note 4: Current fl ows out of pin.
Note 5: Current limit guaranteed by design and/or correlation to static test.
Slope compensation reduces current limit at higher duty cycle.
TEMPERATURE (°C)
–50 –25
0
QUIESCENT CURRENT (µA)
4
10
0
50
75
3487 G01
2
8
6
25
100
125
TEMPERATURE (°C)
–50 –25
50
PERCENTAGE OF FINAL FBP VOLTAGE (%)
70
100
0
50
75
3487 G02
60
90
80
25
100
125
TEMPERATURE (°C)
–50
1.200
V
FBP
(V)
1.225
1.250
1.275
1.300
–25 0 25 50
3487 G03
75 100 125