参数资料
| 型号： | LTC660CS8#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC REG DBL INV ADJ 0.1A 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 倍增器，反相 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | -1.5 V ~ -5.5 V，5 V ~ 11 V |
| 输入电压： | 1.5 V ~ 5.5 V，2.5 V ~ 5.5 V |
| 频率 - 开关： | 10kHz，80kHz |
| 电流 - 输出： | 100mA |
| 同步整流器： | 无 |
| 工作温度： | 0°C ~ 70°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 |
LTC660
100mA CMOS
Voltage Converter
FEATURES
DESCRIPTIO N
s
s
s
s
s
s
s
s
Simple Conversion of 5V to – 5V Supply
Output Drive: 100mA
R OUT : 6.5 ? (0.65V Loss at 100mA)
BOOST Pin (Pin 1) for Higher Switching Frequency
Inverting and Doubling Modes
Minimum Open Circuit Voltage Conversion
Efficiency: 99%
Typical Power Conversion Efficiency
with a 100mA Load: 88%
Easy to Use
The LTC ? 660 is a monolithic CMOS switched-capacitor
voltage converter. It performs supply voltage conversion
from positive to negative from an input range of 1.5V to
5.5V, resulting in complementary output voltages of
– 1.5V to – 5.5V. It also performs a doubling at an input
voltage range of 2.5V to 5.5V, resulting in a doubled
output voltage of 5V to 11V. Only two external capacitors
are needed for the charge pump and charge reservoir
functions.
The converter has an internal oscillator that can be
APPLICATIO N S
overdriven by an external clock or slowed down when
connected to a capacitor. The oscillator runs at a 10kHz
s
s
s
s
Conversion of 5V to ± 5V Supplies
Inexpensive Negative Supplies
Data Acquisition Systems
High Current Upgrade to LTC1044 or LTC7660
frequency when unloaded. A higher frequency outside the
audio band can also be obtained if the BOOST pin is tied
to V + .
The LTC660 contains an internal oscillator, divide-by-two,
voltage level shifter and four power MOSFETs.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO N
Generating – 5V from 5V
Output Voltage vs
Load Current for V + = 5V
CAP
+
C1
150 μ F
1
2
3
BOOST
+
LTC660
GND
V +
OSC
LV
8
7
6
5V INPUT
–5.0
–4.8
T A = 25 ° C
R OUT = 6.5 ?
4
CAP
–
V OUT
5
–5V
OUTPUT
C2
150 μ F
–4.6
–4.4
660 TA01
–4.2
–4.0
0
20
40
60
80
100
LOAD CURRENT (mA)
660 TA02
1
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