TC660 TELCOM [TelCom Semiconductor, Inc], TC660 Datasheet

TC660

Manufacturer Part Number

TC660

Description

100mA CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER

Manufacturer

TELCOM [TelCom Semiconductor, Inc]

Datasheets

1.TC660.pdf (8 pages)

2.TC660.pdf (8 pages)

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100mA CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER

FEATURES

APPLICATIONS

PIN CONFIGURATION (DIP and SOIC)

FUNCTIONAL BLOCK DIAGRAM

CAP +

CAP –

GND

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 ................200 A @ 5 V

Low Cost and Easy to Use

— Only Two External Capacitors Required

Selectable Oscillator Frequency ....... 10kHz/90kHz

ESD Protection ................................................... 4kV

Laptop Computers

Process Instrumentation

Automotive Instruments

P Based Controllers

TELCOM SEMICONDUCTOR, INC.

TC660CPA

TC660EPA

OSC

V OUT

TC660

OSCILLATOR

CAP +

CAP –

GND

REGULATOR

INTERNAL

VOLTAGE

TC660COA

TC660EOA

TRANSLATOR

VOLTAGE–

OSC

V OUT

LEVEL

GND

V + CAP +

ORDERING INFORMATION

Part No.

TC660COA

TC660CPA

TC660EOA

TC660EPA

TC7660EV

GENERAL DESCRIPTION

negative voltage supply, that can support a 100mA maxi-

mum load, from a positive voltage input of 1.5V to 5.5V. Only

two external capacitors are required.

capacitor then inverted and transferred to an output reser-

voir capacitor. The on-board oscillator normally runs at a

frequency of 10kHz with V

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

tor 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 accom-

plished by leaving LV open.

the input voltage with the output open-circuited. Power

conversion efficiency is 98% when output load is between

2mA and 5mA.

The TC660 DC-to-DC voltage converter generates a

Power supply voltage is stored on an undedicated

The TC660 open circuit output voltage is within 0.1% of

NETWORK

EVALUATION

AVAILABLE

LOGIC

KIT

Package

8-Pin SOIC

8-Pin Plastic DIP

8-Pin SOIC

8-Pin Plastic DIP

Evaluation Kit for

Charge Pump Family

V OUT

CAP –

at 5V. This frequency can be

, in order to optimize capaci-

– 40 C to +85 C

Temp. Range

0 C to +70 C

TC660

TC660-2 9/10/96

4-5

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