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TC654EUNTR, TC660, TC660COA

Table of contents:
Info of TC654EUNTR
Info of TC660
Info of TC660COA

TC654EUNTR, TC660, TC660COA Selling Leads, Datasheet

MFG:Microchip Technology Category:Integrated Circuits (ICs) Package Cooled:SOP-8 D/C:520

TC654EUNTR, TC660, TC660COA Datasheet download

Five Points

Part Number: TC654EUNTR

Category: Integrated Circuits (ICs)

MFG: Microchip Technology

Package Cooled: SOP-8

D/C: 520

Description: IC PWM FAN SPEED CONTRLR 10-MSOP

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TC654EUNTR Parameters

Technical/Catalog Information	TC654EUNTR
Vendor	Microchip Technology
Category	Integrated Circuits (ICs)
Applications	Fan Controller, Brushless (BLDC)
Number of Outputs	1
Voltage - Supply	3 V ~ 5.5 V
Voltage - Load	-
Current - Output	-
Operating Temperature	-40°C ~ 85°C
Package / Case	10-MSOP, Micro10?, 10-uMAX, 10-uSOP
Packaging	Tape & Reel (TR)
Drawing Number	*
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	TC654EUNTR TC654EUNTR

TC660 General Description

The TC660 DC-to-DC voltage converter generates a negative voltage supply, that can support a 100mA maximum
load, from a positive voltage input of 1.5V to 5.5V. Only two external capacitors are required.

Power supply voltage is stored on an undedicated capacitor then inverted and transferred to an output reservoir
capacitor. The on-board oscillator normally runs at a frequency of 10kHz with V+ at 5V. This frequency can be
lowered by the addition of an external capacitor from OSC(pin 7) to ground, or raised to 90kHz by connecting the frequency control pin (FC) to V+, in order to optimize capacitor size, quiescent current, and output voltage ripple frequency. Operation using input voltage between 1.5V and 3.0V is accommodated by grounding the LV input (pin 6). Operation at higher input voltages (3.0V to 5.5V) is accomplished by leaving LV open.

The TC660 open circuit output voltage is within 0.1% of the input voltage with the output open-circuited. Power
conversion efficiency is 98% when output load is between 2mA and 5mA.

TC660 Maximum Ratings

Supply Voltage ........................................................... +6V
LV, FC, OSC Input
Voltage (Note 1) ....................... VOUT  0.3V to (V+ +0.3V)
Current Into LV (Note 1) ...................... 20 mA for V+ >3.5V
Output Short Duration (VSUPPLY £ 5.5V) (Note 3) .. 10 Sec
Power Dissipation (Note 2) (TA £ 70°C)
SOIC ........................................................................470mW
Plastic DIP ...............................................................730mW
Operating Temperature Range
C Suffix ....................................................... 0°C to +70°C
E Suffix .................................................  40°C to +85°C
Storage Temperature Range ................  65°C to +150°C
Lead Temperature (Soldering, 10 sec) ................... +300°C

TC660 Features

Pin Compatible with TC7660
High Output Current ..................................... 100mA
Converts (+1.5V to 5.5V) to ( 1.5V to 5.5V)
Power Efficiency @100mA......................... 88% typ
Low Power Consumption ................200mA @ 5 VIN
Low Cost and Easy to Use- Only Two External Capacitors Required
Selectable Oscillator Frequency ....... 10kHz/90kHz
ESD Protection ...................................................4kV

TC660 Typical Application

Laptop Computers
mP Based Controllers
Process Instrumentation
Automotive Instruments

TC660 Connection Diagram

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