ICL7660

Switched-Capacitor Voltage Converters

20mA Charge Pump with Industry Standard Pinout


Please check latest availability status for a specific part variant.

Description

The MAX1044 and ICL7660 are monolithic, CMOS switched-capacitor voltage converters that invert, double, divide, or multiply a positive input voltage. They are pin compatible with the industry-standard ICL7660 and LTC1044. Operation is guaranteed from 1.5V to 10V with no external diode over the full temperature range. They deliver 10mA with a 0.5V output drop. The MAX1044 has a BOOST pin that raises the oscillator frequency above the audio band and reduces external capacitor size requirements.

The MAX1044/ICL7660 combine low quiescent current and high efficiency. Oscillator control circuitry and four power MOSFET switches are included on-chip. Applications include generating a -5V supply from a +5V logic supply to power analog circuitry. For applications requiring more power, the MAX660 delivers up to 100mA with a voltage drop of less than 0.65V.
ICL7660, MAX1044: Typical Operating Circuit ICL7660, MAX1044: Typical Operating Circuit Enlarge+

Key Features

  • Miniature µMAX Package
  • 1.5V to 10.0V Operating Supply Voltage Range
  • 98% Typical Power-Conversion Efficiency
  • Invert, Double, Divide, or Multiply Input Voltages
  • BOOST Pin Increases Switching Frequencies (MAX1044)
  • No-Load Supply Current: 200µA Max at 5V
  • No External Diode Required for Higher-Voltage Operation

Applications/Uses

  • -5V Supply from +5V Logic Supply
  • Data Acquisition
  • EIA/TIA-232E and EIA/TIA-562 Power Supplies
  • Handheld Instruments (PDAs, Palmtops)
  • Op-Amp Power Supplies
  • Panel Meters
  • Personal Communications Equipment
  • Portable Telephones
Part NumberTopologyVIN
(V)
VIN
(V)
ICC
(mA)
Unadj. VOUT
(V)
IOUT
(A)
Oper. Freq.
(kHz)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxmaxtypSee Notes
ICL7660 
Doubler
Inverter
Unregulated
1.5100.175
+2xVIN
-VIN
0.0210
-40 to +85
0 to +70
CDIP/8
GOLD CAN/8
PDIP/8
SOIC (N)/8
UMAX/8
$1.11 @1k
MAX1044 0.220
CDIP/8
PDIP/8
SOIC (N)/8
$1.15 @1k
See All Charge Pumps (45)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

Tutorial 725 DC-DC Conversion Without Inductors
App Note 10 Lower Operating Frequency Improves ICL7660 Voltage-Conversion Efficiency

Quality and Environmental Data

Product Reliability Reports: ICL7660.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • ICL7660AMJA/883B
  • ICL7660CPA+
  • ICL7660CSA+
  • ICL7660CSA+T
  • ICL7660CUA+
  • ICL7660CUA+T
  • ICL7660EPA+
  • ICL7660ESA+
  • ICL7660ESA+T
  • ICL7660ISA+
  • ICL7660ISA+T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
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