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L6271, L62724-75, L62728AC

Table of contents:
Info of L6271
Info of L62724-75
Info of L62728AC

L6271, L62724-75, L62728AC Selling Leads, Datasheet

MFG:ST Package Cooled:14 D/C:O9+

L6271, L62724-75, L62728AC Datasheet download

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Part Number: L6271

MFG: ST

Package Cooled: 14

D/C: O9+

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L6271 General Description

Each driver has two output stagesscaled in cur- rentbya factorK =10.

In voltagemodeconfigurationthetwo outputsare shorted.

In charge mode configuration OUT1 drives a ca- pacitor Cint and is closed in feedback, while OUTK drives thepiezo, mirroring thecurrent sup- plied to Cint, with a current multiplied by a K fac- or(seeFig.1).

Thesupplyvoltagecanbeinternallygeneratedby theDC-DCconverter,or external,maintainingthe DC-DC converter in sleep mode (PIN15 shorted to ground),in thiscase the supply voltage can be 0 to V512+4 minimum value up to 80V in single supplyor V512+4to 40Vsymmetricalto ground.

The drivers have 130dB DC gain and the Band- width is 500KHz. Stability is granted with a mini- mum gain of 20dB, for a capacitive load in the range0.4nFupto 24nF.

The driverscan besuppliedwith HVP-HVM (dou- ble supply mode) or with HVP-Ground (single supply mode). In both cases they can achieve a rail-to rail outputdynamic range with a maximum load currentof ±75mA.

In double supply mode the input stage has - 5V/+5V dynamic range, while in single supply modeit has1.2Vup to 10Vinput dynamicrange. A 2.5V internal reference voltage is available at one pin (Vref) thatcan be usedto closethe feed- back if the input signal is symmetrical around 2.5V.

In this case the output dynamic is symmetrical around 2.5V. It is present a 2.5V down level shifter that can be connectedbetween the input signal and the input of the opamp, to work inter- nally witha signalsymmetricalto ground.

L6271 Maximum Ratings

Symbol	Parameter	Value	Unit
V512	Supply voltage pin 20 referredto Ground	14	V
HVP	Positive high voltage referredto HVM	84	V
HVM	Negative high voltage referred to Ground	-42	V
IN A&B	Amplifier input voltage common mode	±6	V
Vi_no to 5	Level shifts input voltage	-0.5to +5.5	V
T_amb	Operative Ambient Temperature	-20 to +80	°C
T_stg	Storage Temperature	-40to +125	°C

Allthe voltagevalue are referredtoground.

L6271 Connection Diagram

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