FAN5660 データシートの表示（PDF） - Fairchild Semiconductor
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FAN5660 Datasheet PDF : 9 Pages
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www.fairchildsemi.com
FAN5660
Monolithic Inductorless CMOS DC/DC Converter
Features
• Inverts, Doubles or Splits Input Supply Voltage
• 90% Typ Conversion Efficiency at 100mA load current
• 0.5V Typ Loss at 100mA Load
• Low 160µA Operating Current
• 5.0Ω Typ Output Resistance for C1 = C2 = 100µF
• Selectable Oscillator Frequency: 5kHz/50kHz
• 8-pin SOIC package.
Applications
• Laptop Computers
• Medical Instruments
• Interface Power Supplies
• Hand-Held Instruments
• Operational-Amplifier Power Supplies
General Description
The FAN5660 is a monolithic charge-pump which can
invert, double or split a +1.5V to +5.5V input voltage.
Using only two identical low-cost capacitors, the charge
pump replaces switching regulators, thus eliminating
inductors and their associated cost, size, and EMI. The
device has a greater than 90% efficiency over most of its load
current range and a typical operating current of only 160µA.
The FAN5660 is ideal for both battery-powered and board-
level voltage conversion applications.
In order to enable the user optimize capacitor size and
quiescent current, the FAN5660 is offered with a frequency
control (FC) pin which selects either 5kHz or 50kHz
operation.
The Oscillator frequency can also be driven with an external
clock. The FAN5660 is available in 8-pin small-outline
packages.
Simplified Block Diagram
VSS
CAP+
CAP–
V+
SYNC
CONTROL
OSCILLATOR
VSH
LV
FC
REV. 1.0.2 3/28/02
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