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参数资料
| 型号： | LTC1144IS8#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/8页 |
| 文件大小： | 0K |
| 描述： | IC REG SWITCHED CAP INV 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 切换式电容器（充电泵），反相 |
| 输出数： | 1 |
| 输入电压： | 2 V ~ 18 V |
| 频率 - 开关： | 4kHz ~ 10kHz |
| 电流 - 输出： | 50mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-SOIC |
LTC1144
A BSOLUTE
A XI U
R A TI G S
PACKAGE/ORDER I FOR ATIO
(Note 1)
Supply Voltage (V + ) (Transient) .............................. 20V
Supply Voltage (V + ) (Operating) ............................. 18V
Input Voltage on Pins 1, 6, 7
(Note 2) ............................ – 0.3V < V IN < (V + ) + 0.3V
Output Short-Circuit Duration
V + ≤ 10V .................................................... Indefinite
V + ≤ 15V ........................................................ 30 sec
V + ≤ 20V ............................................. Not Protected
Power Dissipation ............................................. 500mW
Operating Temperature Range
LTC1144C................................................ 0 ° C to 70 ° C
LTC1144I ............................................ – 40 ° C to 85 ° C
Storage Temperature Range ................. – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec).................. 300 ° C
TOP VIEW
BOOST 1 8 V +
CAP + 2 7 OSC
GND 3 6 SHDN
CAP – 4 5 V OUT
N8 PACKAGE
8-LEAD PLASTIC DIP
T JMAX = 110°C, θ JA = 100°C/W
TOP VIEW
BOOST 1 8 V +
CAP + 2 7 OSC
GND 3 6 SHDN
CAP – 4 5 V OUT
S8 PACKAGE
8-LEAD PLASTIC SOIC
T JMAX = 110°C, θ JA = 130°C/W
ORDER PART
NUMBER
LTC1144CN8
LTC1144IN8
LTC1144CS8
LTC1144IS8
S8 PART MARKING
1144
1144I
Consult factory for Military grade parts.
ELECTRICAL C HARA C TERISTICS
V + = 15V, C OSC = 0pF, T A = 25 ° C, Test Circuit Figure 1, unless otherwise noted.
LTC1144C
LTC1144I
SYMBOL PARAMETER
CONDITIONS
MIN
TYP MAX
MIN
TYP MAX
UNITS
I S
Supply Voltage Range
Supply Current
R L = 10k
R L = ∞ , Pins 1, 6 No Connection,
q
2
18
1.1
2
18
1.1
V
mA
f OSC = 10kHz
SHDN = 0V, R L = ∞ , Pins 1, 7
q
q
1.3
0.008 0.03
1.6
0.008 0.035
mA
mA
No Connection
V + = 5V, R L = ∞ , Pins 1, 6
0.10
0.10
mA
No Connection, f OSC = 4kHz
q
0.13
0.15
mA
V + = 5V, SHDN = 0V, R L = ∞ ,
q
0.002
0.015
0.002
0.018
mA
Pins 1, 7 No Connection
R OUT
Output Resistance
V + = 15V, I L = 20mA at 10kHz
V + = 5V, I L = 3mA at 4kHz
q
q
56
90
100
120
250
56
90
100
140
300
?
?
?
f OSC
Oscillator Frequency V + = 15V (Note 3)
V + = 5V
10
4
10
4
kHz
kHz
Power Efficiency R L = 2k at 10kHz
Voltage Conversion Efficiency R L = ∞
q
q
90
97.0
93
99.9
90
97.0
93
99.9
%
%
Oscillator Sink or Source Current V + = 5V (V OSC = 0V to 5V)
V + = 15V (V OSC = 0V to 15V)
0.5
4
0.5
4
μ A
μ A
The q denotes specifications which apply over the full operating
temperature range; all other limits and typicals at T A = 25 ° C.
Note 1: Absolute maximum ratings are those values beyond which the life
of a device may be impaired.
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
2
inputs from sources operating from external supplies be applied prior to
power-up of the LTC1144.
Note 3: f OSC is tested with C OSC = 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.
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