ADM660AR Analog Devices Inc, ADM660AR Datasheet

ADM660AR

Manufacturer Part Number

ADM660AR

Description

IC CONVERTER SWITCH CAP 8SOIC

Manufacturer

Analog Devices Inc

Type

Step-Up (Boost), Switched Capacitor (Charge Pump), Doubler, Invertingr

Datasheet

1.ADM660ARZ.pdf (12 pages)

Specifications of ADM660AR

Rohs Status

RoHS non-compliant

Internal Switch(s)

Yes

Synchronous Rectifier

Number Of Outputs

Voltage - Output

-1.5 ~ -7 V, 3 ~ 14 V

Current - Output

100mA

Voltage - Input

1.5 ~ 7 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

8-SOIC (3.9mm Width)

Power - Output

450mW

Operating Supply Voltage (min)

1.5V

Operating Supply Voltage (max)

Operating Temp Range

-40C to 85C

Operating Temperature Classification

Industrial

Package Type

SOIC N

Pin Count

Mounting

Surface Mount

Output Voltage

-1.5 to -7/5 to 14V

Output Current

100mA

Frequency - Switching

Lead Free Status / RoHS Status

Not Compliant

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Download datasheet (283Kb)

GENERAL DESCRIPTION

The ADM660/ADM8660 is a charge-pump voltage converter

that can be used to either invert the input supply voltage giving

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

optimize capacitor size and quiescent current. With 25 kHz

selected, a 10 µF external capacitor is suitable, while with 120 kHz

the capacitor may be reduced to 2.2 µF. 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

of the external oscillator (OSC) pin. This can be used to disable

the device and reduce the quiescent current to 300 nA.

REV. B

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

registered trademarks are the property of their respective companies.

OUT

FEATURES

ADM660: Inverts or Doubles Input Supply Voltage

ADM8660: Inverts Input Supply Voltage

100 mA Output Current

Shutdown Function (ADM8660)

2.2 F or 10 F Capacitors

0.3 V Drop at 30 mA Load

+1.5 V to +7 V Supply

Low Power CMOS: 600 A Quiescent Current

Selectable Charge Pump Frequency (25 kHz/120 kHz)

Pin Compatible Upgrade for MAX660, MAX665, ICL7660

Available in 16-Lead TSSOP Package

APPLICATIONS

Handheld Instruments

Portable Computers

Remote Data Acquisition

Op Amp Power Supplies

= –V

or double it (ADM660 only) giving V

OUT

= 2

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

Voltage Inverter Configuration with Shutdown (ADM8660)

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.

Option

Inverting Mode

Doubling Mode

External Oscillator

Shutdown

Package Options

R-8

N-8

RU-16

SHUTDOWN

10 F

CONTROL

Voltage Inverter Configuration (ADM660)

TYPICAL CIRCUIT CONFIGURATIONS

CMOS Switched-Capacitor

ADM660/ADM8660 Options

CAP+

GND

CAP–

CAP+

GND

CAP–

ADM660/ADM8660

ADM660

ADM8660

Voltage Converters

ADM660

OSC

OUT

V+

+1.5V TO +7V

V+

INPUT

+1.5V TO +7V

INPUT

10 F

www.analog.com

INVERTED

NEGATIVE

OUTPUT

INVERTED

NEGATIVE

OUTPUT

ADM8660

Related parts for ADM660AR

ADM660AR Summary of contents

Page 1

FEATURES ADM660: Inverts or Doubles Input Supply Voltage ADM8660: Inverts Input Supply Voltage 100 mA Output Current Shutdown Function (ADM8660) 2 Capacitors 0.3 V Drop Load +1 Supply Low ...

ADM660/ADM8660–SPECIFICATIONS Parameter Input Voltage, V+ Supply Current Output Current Output Resistance (ADM660) Output Resistance (ADM8660) Output Resistance (ADM8660) Charge-Pump Frequency OSC Input Current Power Efficiency (FC = Open) (ADM660) Power Efficiency (FC = Open) (ADM8660) Power Efficiency (FC = Open) ...

Page 3

... Thermal Impedance . . . . . . . . . . . . . . . . . . . . 170°C/W JA Model ADM660AN ADM660AR ADM660ARU ADM8660AN ADM8660AR *N = Plastic DIP Thin Shrink Small Outline Small Outline. CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADM660/ADM8660 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges ...

Page 4

ADM660/ADM8660 Inverter Configuration Mnemonic Function FC Frequency Control Input for Internal Oscillator and Charge Pump. With FC = Open (ADM660) or connected to GND (ADM8660), f with 120 kHz. CP CAP+ Positive Charge-Pump Capacitor Terminal. ...

Page 5

Typical Performance Characteristics–ADM660/ADM8660 3.0 2.5 VOLTAGE DOUBLER LV = OUT 2.0 1.5 1 GND 0.5 0 1.5 3.5 7 SUPPLY VOLTAGE – Volts TPC 1. Power Supply Current vs. Voltage –3.0 EFFICIENCY –3.4 –3.8 –4.2 V OUT –4.6 ...

Page 6

ADM660/ADM8660 5.0 LOAD = 10mA 4.5 LOAD = 1mA 4.0 3.5 LOAD = 50mA 3.0 2.5 2.0 LOAD = 80mA 1.5 1.0 0 CHARGE-PUMP FREQUENCY – kHz TPC 7. Output Voltage vs. Charge-Pump Frequency ...

Page 7

LV = GND C1 2 –40 – TEMPERATURE – C TPC 13. Charge-Pump Frequency vs. Temperature GENERAL INFORMATION The ADM660/ADM8660 is a ...

Page 8

ADM660/ADM8660 Inverting Negative Voltage Generator Figures 5 and 6 show the ADM660/ADM8660 configured to generate a negative output voltage. Input supply voltages from 1 are allowable. For supply voltage less than must ...

Page 9

The ADM660/ADM8660 is tested using low ESR, 10 µF, capacitors for both C1 and C2. Smaller values of C1 increase the output resistance, while increasing C1 will reduce the output resistance. The output resistance is also depen- dent ...

Page 10

ADM660/ADM8660 8-Lead Plastic Dual-in-Line Package [PDIP] (N-8) Dimensions shown in inches and (millimeters) 0.375 (9.53) 0.365 (9.27) 0.355 (9.02 0.295 (7.49) 0.285 (7.24) 0.275 (6.98 0.100 (2.54) BSC 0.015 0.180 (0.38) (4.57) MIN MAX 0.150 (3.81) ...

Page 11

Revision History Location 12/02—Data Sheet changed from REV REV. B. Renumbered TPCs and Figures . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 12

–12– ...

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