cat660 Catalyst Semiconductor, cat660 Datasheet - Page 9

• Manufacturer Part Number: cat660
• Description: 100ma Cmos Charge Pump Inverter/doubler
• Manufacturer: Catalyst Semiconductor

CAPACITOR SUPPLIERS
The following manufacturers supply low-ESR capacitors:
Capacitor manufacturers continually introduce new series and offer different package styles. It is recommended
that before a design is finalized capacitor manufacturers should be surveyed for their latest product offerings.
CONTROLLING LOSS IN CAT660 APPLICATIONS
There are three primary sources of voltage loss:
1. Output resistance
2. Charge pump (C1) capacitor ESR:
3. Output or reservoir (C2) capacitor ESR:
Increasing the value of C2 and/or decreasing its ESR will
reduce noise and ripple.
Manufacturer
AVX/Kyocera
Vishay/Sprague 595
Sanyo
Nichicon
VLOSS = ILOAD x ROUT, where ROUT is
the CAT660 output resistance and ILOAD is
the load current.
VLOSSC1
ESRC1 is the ESR of capacitor C1.
VLOSSC2 = ESRC2 x ILOAD, where ESRC2
is the ESR of capacitor C2.
Capacitor Type Phone
TPS/TPS3
MV-AX, UGX
F55
HC/HD
4 x ESRC1 x ILOAD, where
843-448-9411
402-563-6866
619-661-6835
847-843-7500
WEB
www.avxcorp.com
www.vishay.com
www.sanyo.com
www.nichicon-us.com
9
The effective output impedance of a CAT660 circuit is
approximately:
Rcircuit
Rout 660 + (4 x ESRC1) + ESRC2
Email
[e-mail]
[e-mail] Aluminum
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Doc. No. MD-5000, Rev. W
Comments
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