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参数资料
| 型号： | LTC1144IS8#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/8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
TYPICAL PERFOR M A N CE CHARACTERISTICS
Output Resistance
Oscillator Frequency
vs Supply Voltage
Output Resistance vs Temperature
vs Supply Voltage
300
250
T A = 25°C
140
120
1000
T A = 25°C
C OSC = 0
200
100
V + = 5V
I L = 3mA
100
B OOST = V +
150
80
V = 15V
100
60
+
10
BOOST = OPEN OR GROUN D
50
0
40
20
I L = 20mA
1
2
4
6
8
10
12
14
16
18
–55 –25
0
25
50
75
100
125
2
4
6
8
10
12
14
16
18
SUPPLY VOLTAGE (V)
Oscillator Frequency as a
Function of C OSC
LTC1144 ? TPC01
TEMPERATURE (°C)
Oscillator Frequency
vs Temperature
LTC1144 ? TPC02
SUPPLY VOLTAGE (V)
LTC1144 ? TPC03
Output Voltage vs Load Current
1000
100
T A = 25°C
V + = 15V
BOOST = V +
1000
100
T A = 25°C
V + = 15V
BOOST = V +
0
–5
T A = 25°C
V + = 15V
C1 = C2 = 10 μ F
BOOST = OPEN
10
1
BOOST = OPEN OR GROUND
0.1
BOOST = OPEN OR GROUND
10
–10
R OUT = 56 ?
0.01
1
10
100
1000
10000
1
–55 –25
0 25 50 75
100
125
–15
0
10
20 30 40
50
60
EXTERNAL CAPACITANCE (PIN 7 TO GND), C OSC (pF)
LTC1144 ? TPC04
Output Voltage vs Load Current
TEMPERATURE (°C)
LTC1144 ? TPC05
Supply Current as a Function of
Oscillator Frequency
LOAD CURRENT (mA)
Power Conversion Efficiency and
Supply Current vs Load Current
LTC1144 ? TPC06
0
10000
100
100
–1
T A = 25°C
V + = 5V
C1 = C2 = 10 μ F
BOOST = OPEN
1000
T A = 25°C
C1 = C2 = 10 μ F
80
P EFF
I S
80
–2
V + = 15V
60
60
100
–3
–4
R OUT = 90 ?
10
V + = 5V
40
20
T A = 25°C
V + = 15V
C1 = C2 = 10 μ F
40
20
BOOST = OPEN
(SEE TEST CIRCUIT)
–5
0
5
10 15 20
25
30
1
0.01
0.1
1
10
100
0
0
10
20
30
40
50
0
LOAD CURRENT (mA)
LTC1144 ? TPC07
OSCILLATOR FREQUENCY (kHz)
LTC1144 ? TPC08
LOAD CURRENT (mA)
LTC1144 ? TPC09
3
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