lt3572 Linear Technology Corporation, lt3572 Datasheet - Page 3

• Manufacturer Part Number: lt3572
• Description: Dual Full-bridge Piezo Driver With 900ma Boost Converter
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
PARAMETER
PWMA Pin Threshold
PWMB Pin Threshold
⎯ P ⎯ G ⎯ O ⎯ O ⎯ D Rising Threshold
⎯ P ⎯ G ⎯ O ⎯ O ⎯ D Falling Threshold
⎯ P ⎯ G ⎯ O ⎯ O ⎯ D Resistance
Switching Frequency
Maximum Duty Cycle
Synchronization Frequency
SYNC Pin Thresholds
SS Current
FB Pin Voltage
FB Pin Voltage Line Regulation
FB Pin Bias Current
SW Current Limit
SW V
SW Leakage Current
OUTx Rise Time
OUTx Fall Time
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3572 is guaranteed to meet specifi ed performance from
0°C to 70°C operating junction temperature. Specifi cations over the –40°C
to 85°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls.
temperature range, otherwise specifi cations are at T
CESAT
CONDITIONS
(Note 3)
(Note 4)
RT = 75.0kΩ
RT = 13.0kΩ
RT = 75.0kΩ
RT = 13.0kΩ
(Note 5)
V
V
(Note 7)
I
SW = 40V
C = 2.2nF, V
C = 2.2nF, V
SW
IN
FB
= 2.5V to 10V
= 1.225V (Note 6)
= 800mA
A
= 25°C. V
OUT
OUT
The
= 30V
= 30V
●
IN
denotes the specifi cations which apply over the full operating
= 5V, V
Note 3: Rising threshold voltage on FB pin that pulls ⎯ P ⎯ G ⎯ O ⎯ O ⎯ D low.
Note 4: Falling threshold voltage on FB pin that causes a high impedance
on ⎯ P ⎯ G ⎯ O ⎯ O ⎯ D .
Note 5: Minimum pulse width is 100ns. Maximum off pulse width is
100ns.
Note 6: Current fl ows into the pin.
Note 7: Current limit guaranteed by design and/or correlation to static test.
Note 8: OUTx refers to OUTA, OUTA, OUTB, OUTB.
⎯ S ⎯ H ⎯ D ⎯ N ⎯ A
= V
⎯ S ⎯ H ⎯ D ⎯ N ⎯ B
= V
⎯ S ⎯ H ⎯ D ⎯ N
●
●
●
●
●
●
●
●
= 5V, unless otherwise noted.
1.195
MIN
1.12
1.01
425
575
0.3
0.3
1.9
0.3
0.9
95
85
1.225
1.16
1.04
2.25
0.01
TYP
500
310
4.5
1.3
0.2
50
1
LT3572
1.065
1.255
2500
MAX
1.19
0.05
575
200
450
100
100
1.5
1.5
2.6
1.5
1.7
3
5
UNITS
3
3572f
MHz
%/V
kHz
kHz
mV
kΩ
μA
nA
μA
ns
ns
%
%
V
V
V
V
V
V
A