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| 型号： | ADM8660ARZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/11页 |
| 文件大小： | 0K |
| 描述： | IC REG MULTI CONFIG ADJ 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 升压（升压），切换电容（充电泵），反相 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | -1.5 V ~ -7 V |
| 输入电压： | 1.5 V ~ 7 V |
| 频率 - 开关： | 25kHz，120kHz |
| 电流 - 输出： | 100mA |
| 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-SO |
CMOS Switched-Capacitor
Voltage Converters
ADM660/ADM8660
FEATURES
ADM660: Inverts or Doubles Input Supply Voltage
ADM8660: Inverts Input Supply Voltage
100 mA Output Current
TYPICAL CIRCUIT CONFIGURATIONS
+1.5V TO +7V
INPUT
Shutdown Function (ADM8660)
2.2 F or 10 F Capacitors
FC
ADM660
V+
0.3 V Drop at 30 mA Load
+1.5 V to +7 V Supply
C1 +
10 F
CAP+
GND
OSC
LV
Low Power CMOS: 600 A Quiescent Current
Selectable Charge Pump Frequency (25 kHz/120 kHz)
CAP–
OUT
C2
INVERTED
NEGATIVE
OUTPUT
Pin Compatible Upgrade for MAX660, MAX665, ICL7660
Available in 16-Lead TSSOP Package
APPLICATIONS
Handheld Instruments
Portable Computers
+ 10 F
Voltage Inverter Configuration (ADM660)
+1.5V TO +7V
INPUT
Remote Data Acquisition
Op Amp Power Supplies
FC
ADM8660
CAP+
V+
GENERAL DESCRIPTION
The ADM660/ADM8660 is a charge-pump voltage converter
that can be used to either invert the input supply voltage giving
C1 +
10 F
SHUTDOWN
CONTROL
GND
CAP–
SD
LV
OUT
C2
+ 10 F
INVERTED
NEGATIVE
OUTPUT
V OUT = –V IN or double it (ADM660 only) giving V OUT = 2
V IN .
Voltage Inverter Configuration with Shutdown (ADM8660)
Input voltages ranging from +1.5 V to +7 V can be inverted into
a negative –1.5 V to –7 V output supply. This inverting scheme
is ideal for generating a negative rail in single power supply
systems. Only two small external capacitors are needed for the
charge pump. Output currents up to 50 mA with greater than
90% efficiency are achievable, while 100 mA achieves greater
than 80% efficiency.
A Frequency Control (FC) input pin is used to select either
25 kHz or 120 kHz charge-pump operation. This is used to
The ADM660 is a pin compatible upgrade for the MAX660,
MAX665, ICL7660, and LTC1046.
The ADM660/ADM8660 is available in 8-lead DIP and
narrow-body SOIC. The ADM660 is also available in a 16-lead
TSSOP package.
ADM660/ADM8660 Options
optimize capacitor size and quiescent current. With 25 kHz
selected, a 10 μ F external capacitor is suitable, while with 120 kHz
the capacitor may be reduced to 2.2 μ F. The oscillator frequency
on the ADM660 can also be controlled with an external capacitor
connected to the OSC input or by driving this input with an
external clock. In applications where a higher supply voltage is
desired it is possible to use the ADM660 to double the input
voltage. With input voltages from 2.5 V to 7 V, output voltages
from 5 V to 14 V are achievable with up to 100 mA output current.
The ADM8660 features a low power shutdown (SD) pin instead
Option
Inverting Mode
Doubling Mode
External Oscillator
Shutdown
Package Options
R-8
N-8
RU-16
ADM660
Y
Y
Y
N
Y
Y
Y
ADM8660
Y
N
N
Y
Y
Y
N
of the external oscillator (OSC) pin. This can be used to disable
the device and reduce the quiescent current to 300 nA.
REV. C
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 www.analog.com
registered trademarks are the property of their respective companies.
Fax: 781/461-3113
? 2011 Analog Devices, Inc. All rights reserved.
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