90V BCD MIXED TECHNOLOGY

SO24 AND SO20 PLASTIC SMD PACKAGE

4.5 TO 13.2V OPERATIVE VOLTAGE

±25 TO ±40V OUTPUT VOLTAGE RANGE

SELECTABLE BY EXTERNAL RESISTOR

FULL-WAVE

RESONANT

DC-DC

CON-

VERTER USING SINGLE COIL FOR DUAL

HIGH VOLTAGE GENERATOR WITH OUT-

PUT SLEW RATE CONTROL AND SELF

CURRENT LIMITING

LINEAR MODE AND BANG-BANG MODE

±40V OR 0/+80V OPERATIVE VOLTAGE

DRIVING CONFIGURATION MODES:

1. SINGLE ENDED VOLTAGE MODE

2. DIFFERENTIAL VOLTAGE MODE

3. SINGLE ENDED CHARGE MODE

DOUBLE OPERATIONAL AMPLIFIERS WITH

500KHZ GAIN BANDWIDTH PRODUCT AND

LOAD DRIVING CAPABILITY FROM 0.4NF

UP TO 24NF

2.5V VOLTAGE REFERENCE

2.5V ANALOG SHIFTING CIRCUITRY

POWER SAVING SLEEP MODE

DESCRIPTION

The L6270/1 is a piezoelectric actuator driver.

This is preliminary information on a new product now in development. Details are subject to change without notice.

February 1999

®

COIL

+

-

+

-

RESONANT

DC-DC

STEP-UP

CONTROLLER

HVP

HVM

HVP

HVM

1

1

1

1

K

K

K

K

2.5V

50K

Ω

SLEEP

ANALOG LEVEL

SHIFTER

VOUT=VIN-2.5

VOUT

VIN

BAND-GAP

REFERENCE

+

-

+

-

INTERNAL

CURRENT

BIAS

100

µA

VSUPPLY

VSUPPLY

4.5V-13V

CRES

BANG-LIN

V512-AP

COIL

HVP

POWER

SUPPLY

INB-

3

21

20

24

17

INB+

16

RC

COMP

22

INA-

8

INA+

9

SLEEP

7

11

10

V-SHIFTED

VIN0-5

13

12

GND-A

VREF

100nF

25K

Ω

14

IREF

15

DC2REF

RREFDC

20

5

6

V512A

OUT1-A

OUTK-A

23

HVM

OUT1-B

19

18

OUTK-B

GND-P

2

HBRIDGE

1

D98IN959A

+40V

-40V

100nF

47nF

100nF

Vfdb

1

Ω

BLOCK DIAGRAM

SO20

SO24

ORDERING NUMBERS:

L6270

L6271

L6270

L6271

MILLI-ACTUATOR DRIVER

PRODUCT PREVIEW

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