SGS Thomson Microelectronics L6271, L6270 Datasheet
L6270
90V BCD MIXEDTECHNOLOGY
SO24AND SO20 PLASTICSMDPACKAGE
4.5 TO 13.2V OPERATIVEVOLTAGE
±25 TO ±40V OUTPUT VOLTAGE RANGE
SELECTABLEBY EXTERNALRESISTOR
FULL-WAVE RESONANT DC-DC CON-
VERTER USING SINGLE COIL FOR DUAL
HIGH VOLTAGE GENERATOR WITH OUTPUT SLEW RATE CONTROL AND SELF
CURRENTLIMITING
LINEARMODE AND BANG-BANGMODE
±40VOR 0/+80VOPERATIVEVOLTAGE
DRIVINGCONFIGURATION MODES:
1.SINGLEENDEDVOLTAGE MODE
2.DIFFERENTIAL VOLTAGE MODE
3.SINGLEENDEDCHARGE MODE
DOUBLEOPERATIONAL AMPLIFIERS WITH
500KHZ GAIN BANDWIDTH PRODUCT AND
LOAD DRIVING CAPABILITY FROM 0.4NF
UP TO24NF
BLOCK DIAGRAM
L6271
MILLI-ACTUATORDRIVER
PRODUCT PREVIEW
SO20 SO24
ORDERING NUMBERS:
L6270 L6271
2.5V VOLTAGEREFERENCE
2.5V ANALOGSHIFTINGCIRCUITRY
POWERSAVING SLEEP MODE
DESCRIPTION
The L6270/1is a piezoelectricactuator driver.
RC
SLEEP
INB-
INB+
COMP
INA-
INA+
HVP
17
-
16
+
HVM
22
HVP
8
-
9
+
HVM
2.5V
50KΩ
7
REFERENCE
SLEEP
ANALOG LEVEL
SHIFTER
VOUT=VIN-2.5
VOUT VIN
V-SHIFTED VIN0-5
CRES
V512-AP COIL HVP
POWER
SUPPLY
1
1
1
1
BAND-GAP
1110
BANG-LIN
K
CONTROLLER
K
K
K
+
-
GND-A VREF
Vfdb
RESONANT
DC-DC
STEP-UP
100µA
+
-
1312
100nF 25KΩ
32120 24
1Ω
INTERNAL
CURRENT
BIAS
14
IREF
COIL
200µA
18
19
23
6
5
20
15
DC2REF
RREFDC
+40V
HBRIDGE1
GND-P2
OUTK-B
OUT1-B
HVM
OUTK-A
OUT1-A
V512A
VSUPPLY
4.5V-13V
100nF
VSUPPLY
D98IN959A
-40V
100nF47nF
February 1999
This is preliminary information on a new product now in development. Details are subjectto change without notice.
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L6270 - L6271
PIN CONNECTION(SO20)
H-BRIDGE
GND-P
COIL
OUT1-A
OUTK-A
SLEEP
INA(inv)
INA(not inv)
GND-A DC2ref
Vref Iref
2
3
4
5
6
7
8
9
10
D98IN968
20
19
18
17
16
15
14
13
12
11
PIN FUNCTIONS(SO20)
N. Name Description
1 H-BRIDGE 40V Half Bridge output for negative charge pump.
2 GND-P Power ground.
3 COIL Coil for positive step up.
4 OUT1-A Output ampl.A.
5 OUTK-A Hi current output ampl.A.
6 SLEEP Sleep mode for stand-by condition(1=SLEEP 0=operative).
7 INA (inv) Inverting input of A-amplifier.
8 INA (not inv) Non Inverting input of A-amplifier.
9 GND-A Analog ground.
10 V
11 I
12 DC2ref Reference voltage for DC-DC converter X20.
13 INB (not inv) Non Invertinginput of B-amplifier.
14 INB (inv) Inverting input of B-amplifier.
15 OUTK-B Hi current output ampl.B.
16 OUT1-B Output ampl.B.
17 V512-AP Analog&Power voltage supply 5 to 12V.
18 RC comp DC-DC converter compensation network.
19 HVM Negative High voltage generated op amp supplier.
20 HVP Positive High voltage generated op amp supplier.
ref
ref
Precise 2.5V reference voltage.
External resistor for precise internal current reference.
HVP1
HVM
RC comp
V512-AP
OUT1-B
OUTK-B
INB(inv)
INB(not inv)
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PIN CONNECTION(SO24)
L6270 - L6271
H-BRIDGE
GND-P
COIL
N.C.
OUT1-A
OUTK-A
SLEEP
INA(inv)
INA(not inv) INB(not inv)
V-SHIFTED DC2ref
2
3
4
5
6
7
8
9
10
24
23
22
21
20
19
18
17
16
15
HVP1
HVM
RC comp
LIN/BANG
V512-AP
OUT1-B
OUTK-B
INB(inv)
Vin 0-5 Iref11 14
1312GND-A Vref
D98IN969
PIN FUNCTIONS(SO24)
N. Name Description
1 H-BRIDGE 40V Half Bridge output for negative charge pump.
2 GND-P Power ground.
3 COIL Coil for positive step up.
4 N.C.
5 OUT1-A Output ampl.A.
6 OUTK-A Hi current output ampl.A.
7 SLEEP Sleep mode for stand-by condition (1=SLEEP 0=operative).
8 INA (inv) Inverting input of A-amplifier.
9 INA (not inv) Non Inverting input of A-amplifier.
10 V-SHIFTED Analog level shifter output Vin-Vref (-2.5 to +2.5 dynamic range)
11 Vin 0-5 Input positive voltage
12 GND-A Analog ground.
13 V
14 I
ref
ref
15 DC2ref Reference voltage for DC-DC converter X20.
16 INB (not inv) Non Inverting input of B-amplifier.
17 INB (inv) Inverting input of B-amplifier.
18 OUTK-B Hi current output ampl.B.
19 OUT1-B Output ampl.B.
20 V512-AP Analog&Power voltage supply 5 to 12V.
21 LIN/BANG Linear or Bang-bang select pin (V512 = BANG 0 = Linear)
22 RC comp DC-DC converter compensation network.
23 HVM Negative High voltage generated op amp supplier.
24 HVP Positive High voltage generated op amp supplier.
Precise 2.5V reference voltage.
External resistor for precise internal current reference.
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