l6660 STMicroelectronics, l6660 Datasheet - Page 4

• Manufacturer Part Number: l6660
• Description: Milli-actuator Driver
• Manufacturer: STMicroelectronics

L6660
ELECTRICAL CHARACTERISTICS (continued)
Note 1: Selectable by external resistors.
Note 2: Set by external Coil and Capacitor from 80 to 550KHz.
Note 3: Take into account the total power dissipation.
Figure 1. Load Regulation
4/9
Shifter Gain
Symbol
V
BW
36
34
32
30
28
26
24
22
V
HVP%
V
Vout0
V
EAoff
V
V
ref
I
Z
ref, cap
I
shifted
sleep
T
I
ref
logic0
logic1
1
vref
EA
time
OUT
Vshift
op
IN
5 9 13 17 21 25 29 33 37 41 45 49 53 57 61 65
OpAmp Output Voltage with 0V
Input Voltage
Reference Voltage PIN13
Reference Voltage Output Current
Filter capacitor at PIN13
Voltage shift value
(V
Analog Voltage Shifter DC
Voltage Gain
Shifter circuitry Band Width
External reference voltage
(PIN14)
Total current in Sleep Mode
DC-DC converter Error
Amplifier Input voltage Offset
(V
Error amplifier Current
Capability
Total HVP precision
Voltage level for 0 logic at
digital input pin (Pin 1-4-7-15)
Voltage level for 1 logic at
digital input pin (Pin 1-4-7-15)
Decay period for V = |19V|
Operative period from Not
Selected phase to Selected
phase for each driver
V
V
PIN11
PIN14
10
11
-V
Load DC Current (mA)
- V
PIN21
Parameter
PIN10
)
)
6V
8V
7V
5V
9V
10V
11V
External feedback programmed
for DC gain value <30V/V
1.0V
V
V
G
3dB amplitude drop
PIN7 at 0 logic
V
V
V
0°C < T
PIN11
PIN11
ref
ref
ref
12V
V’’
IN = 2.25V
= 2.25V 0%
(Pin14) = 2.25V See Fig. 3
10
0.1
= V
= V
Test Condition
Vin0-5
case
V’
10
REFIN
REFIN
< 80° C
OPERATIONAL AMPLIFIERS DESCRIPTION
Each driver has two output stages scaled in cur-
rent by a factor K = 10.
In voltage mode configuration the two outputs are
shorted.
In charge mode configuration OUT1 drives a ca-
pacitor Cint and is closed in feedback, while
OUTK drives the piezo, mirroring the current sup-
plied to Cint, with a current multiplied by a K fac-
tor (see Fig.2).
The supply voltage can be internally generated
by the DC-DC converter, or external, maintaining
the DC-DC converter in sleep mode (PIN3
shorted to ground), in this case the supply volt-
age can be 0 to V5/12+4 minimum value up to
70V in single supply or V5/12+4 to 35V symmetri-
cal to ground.
The drivers have 130dB DC gain and the Band-
width is 500KHz. Stability is guaranteed with a
minimum gain of 20dB, for a capacitive load in
the range 0.4nF up to 24nF.
+ 0.1V
3.5V
V’
10
V"
10
V
0.975
Min.
-2%
140
2.4
2.0
-12
1.6
10
ref
-1
-1
-4
IN
V
Typ.
1.00
2.5
ref
100
2
IN
V
1.025
Max.
+2%
+12
340
100
800
2.6
2.6
0.9
ref
+1
+1
+4
4
IN
MHz
Unit
mA
mV
nF
%
V
V
V
V
V
V
A
A
s
s