Date: 09/16/04

SP6661 High Frequency 200mA Charge Pump Inverter or Doubler

© Copyright 2004 Sipex Corporation

1

FEATURES

■ Inverts or Doubles Input Supply Voltage

■ 92% Power Efficiency at 100mA

■ 120kHz/900kHz Selectable Oscillator Fre-

quency

■ 4.5Ω Output Resistance Using 3.3µF Ceramic

Caps

■ Low Voltage Battery Operation

■ Ideal for 3.6V Lithium Ion Battery or 5.0V Input

■ High Output Current – 200mA

■ Low Profile Solution

■ 1.5V Inverter Startup Guaranteed

High Frequency 200mA Charge Pump

Inverter or Doubler

SP6661

The SP6661 is a CMOS DC-DC Monolithic Voltage Converter that can be implemented as a

Voltage Inverter or a Positive Voltage Doubler. As a Voltage Inverter, a -1.5V to -5.0V output can

be converted from a +1.5V to +5.0V input. As a Voltage Doubler, a +5.0V to +10.0V output can

be provided from a +2.5V to +5.0V input. The SP6661 is ideal for both battery-powered and board

level voltage conversion applications with a typical operating current of 3mA and a high efficiency

(>90%) over most of its load-current range. Typical end products for this device are disk drive

supplies, operational amplifier and interface power supplies, medical instruments, and hand held

and laptop computers. The SP6661 is available in 8-pin NSOIC, and µSOIC packages.

OSC

OUT

SP6661

+1.5V to +5.0V

C1

1µF to 22µF

5

1

2

7

4

FC

C2

1µF to 22µF

CAP+

CAP-

GND

6

8

3

LV

INVERTED

NEGATIVE

VOLTAGE

OUTPUT

+V

®

C3

1µF to 22µF

CAP+

®

C3

1µF to 22µF

SP6661

OSC

OUT

+2.5V to +5.0V

C1

1µF to 22µF

5

1

2

7

4

FC

C2

1µF to 22µF

CAP-

GND

6

8

3

LV

DOUBLE

NEGATIVE

VOLTAGE

OUTPUT

+V

Figure 1: Voltage Inverter

Figure 2: Voltage Doubler

DESCRIPTION

Now Available in Lead Free Packaging

■ Pin-Compatible High-Current Upgrade

of the ICL7660 and 660 Industry

Standard

■ Smallest Package Available for the 660

Industry Standard – 8 pin MSOP

SP6661

8 Pin MSOP

1

2

3

4

8

7

6

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TYPICAL APPLICATIONS CIRICUIT