L6660 Datasheet, PDF (1/9 Pages) STMicroelectronics – MILLI-ACTUATOR DRIVER

®
L6660
90V BCD MIXED TECHNOLOGY
SO24 PLASTIC SMD PACKAGE
4.5 TO 13.2V OPERATIVE VOLTAGE
±25 TO ±35V OUTPUT VOLTAGE RANGE
SELECTABLE BY EXTERNAL RESISTORS
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 FOR LOW EMI
±35V OR 0/+70V 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
ANALOG VOLTAGE SHIFTING CIRCUITRY
BLOCK AND APPLICATION DIAGRAM
MILLI-ACTUATOR DRIVER
PRODUCT PREVIEW
SO24(Shrink)
INTERNAL 2.5V VOLTAGE REFERENCE
POWER SAVING SLEEP MODE
USER SPECIFIED INPUT REFERENCE
(2.25V DC)
DESCRIPTION
The L6660 is a piezoelectric actuator driver.
[7] SLEEP
[17] INB(inv)
[16] INB(not inv)
[10] Vosh
[11] Vin0-5
From DAC
OUTPUT
[8] INA(inv)
[9] INA(not inv)
[15] WENA
[4] AorB
[1] AandB
[20] V5/12AP
[14] IN Vref
[13] Vref out
SLEEP
Shifter
Vosh=Vin-Vref
HVP
-
B
+
HVM
HVP
-
A
+
HVM
MUX
Controll
Logic
Digital
Pwr Supply
A-GND
Internal
Current
Bias
+
-
Internal Band-gap
and 2.5 reference Voltage
100nF
[12] GND-A
[24] HVP
1
K
1
K
1
K
1
K
V5/12
Back-Up
Oscill.
DC-DC LOGIC
[21] Vfdb
:5
[22] RCcomp
[18] OUTK-B
[19] OUT1-B
[23] HVM
[6] OUTK-A
[5] OUT1-A
V512
47µH
[3] COIL
2.2nF
+35V
Rs
[2] GND-P
68nF
220nF
Rfdb1
HVM
Rfdb2
-35V
220nF
47nF HVP=VrefIN(1+Rfdb1/Rfdb2)
December 2000
1/9
This is preliminary information on a new product now in development. Details are subject to change without notice.