LTC1144 查看數據表（PDF） - Linear Technology
零件编号
产品描述 (功能)
生产厂家
LTC1144 Datasheet PDF : 12 Pages
| |||
LTC1144
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range,V+ = 15V, COSC = 0pF, Test Circuit Figure 1, otherwise specifications are at TA = 25°C.
LTC1144C
LTC1144I
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX MIN TYP MAX UNITS
Supply Voltage Range
IS
Supply Current
ROUT
Output Resistance
fOSC
Oscillator Frequency
RL = 10k
l2
18
2
18
V
RL = ∞, Pins 1, 6 No Connection,
1.1
fOSC = 10kHz
l
1.3
1.1
mA
1.6
mA
SHDN = 0V, RL = ∞, Pins 1, 7 l
No Connection
0.008 0.03
0.008 0.035
mA
V+ = 5V, RL = ∞, Pins 1, 6
No Connection, fOSC = 4kHz
l
V+ = 5V, SHDN = 0V, RL = ∞,
l
Pins 1, 7 No Connection
0.002
0.10
0.13
0.015
0.10
mA
0.15
mA
0.002 0.018
mA
V+ = 15V, IL = 20mA at 10kHz
l
56
100
120
56
100
Ω
140
Ω
V+ = 5V, IL = 3mA at 4kHz
l
V+ = 15V (Note 3)
V+ = 5V
90
250
10
4
90
300
Ω
10
kHz
4
kHz
Power Efficiency
RL = 2k at 10kHz
l 90
93
90
93
%
Voltage Conversion Efficiency RL = ∞
l 97.0 99.9
97.0 99.9
%
Oscillator Sink or Source Current
V+
V+
=
=
5V (VOSC = 0V to 5V)
15V (VOSC = 0V to 15V)
0.5
4
0.5
µA
4
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: Connecting any input terminal to voltages greater than V+ or less
than ground may cause destructive latch-up. It is recommended that no
inputs from sources operating from external supplies be applied prior to
power-up of the LTC1144.
Note 3: fOSC is tested with COSC = 100pF to minimize the effects of test
fixture capacitance loading. The 0pF frequency is correlated to this 100pF
test point, and is intended to simulate the capacitance at pin 7 when the
device is plugged into a test socket and no external capacitor is used.
For more information www.linear.com/LTC1144
1144fa
3
Share Link: 