L6235 데이터 시트보기 (PDF) - STMicroelectronics
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L6235 Datasheet PDF : 25 Pages
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L6235
ELECTRICAL CHARACTERISTICS (continued)
(VS = 48V , Tamb = 25 °C , unless otherwise specified)
Symbol
Parameter
Test Conditions
Min
Switching Characteristics
tD(on)EN Enable to out turn-ON delay time (7) ILOAD = 2.8 A, Resistive Load
110
tD(off)EN Enable to out turn-OFF delay time (7) ILOAD = 2.8 A, Resistive Load
300
tD(on)IN Other Logic Inputs to Output Turn- ILOAD = 2.8 A, Resistive Load
ON delay Time
tD(off)IN Other Logic Inputs to out Turn-OFF ILOAD = 2.8 A, Resistive Load
delay Time
tRISE Output Rise Time (7)
ILOAD = 2.8 A, Resistive Load
40
tFALL Output Fall Time (7)
ILOAD = 2.8 A, Resistive Load
40
tDT Dead Time
0.5
fCP Charge Pump Frequency
Tj = -25 to 125°C (6)
PWM Comparator and Monostable
IRCOFF Source current at pin RCOFF
VRCOFF = 2.5 V
3.5
VOFFSET Offset Voltage on Sense
Comparator
Vref = 0.5 V
tprop Turn OFF Propagation delay (8)
Vref = 0.5 V
tblank Internal Blanking Time on Sense
Comparator
tON(min) Minimum on Time
tOFF PWM RecirculationTime
ROFF= 20kΩ ; COFF =1nF
ROFF= 100kΩ ; COFF =1nF
IBIAS Input Bias Current at pin VREF
Tacho Monostable
IRCPULSE Source Current at pin RCPULSE VRCPULSE = 2.5V
3.5
tPULSE Monostable of Time
RPUL = 20kΩ ; CPUL =1nF
RPUL = 100kΩ ; CPUL =1nF
RTACHO Open Drain ON Resistance
Over Current Detection & Protection
ISOVER Supply Overcurrent Protection
TJ = -25 to 125°C (6)
4.0
Threshold
ROPDR Open Drain ON Resistance
IDIAG = 4mA
IOH OCD high level leakage current
VDIAG = 5V
tOCD(ON) OCD Turn-ON Delay Time (9)
IDIAG = 4mA; CDIAG < 100pF
tOCD(OFF) OCD Turn-OFF Delay Time (9)
IDIAG = 4mA; CDIAG < 100pF
(6) Tested at 25°C in a restricted range and guaranteed by characterization.
(7) See Fig. 1.
(8) Measured applying a voltage of 1V to pin SENSE and a voltage drop from 2V to 0V to pin VREF.
(9) See Fig. 2.
Typ Max Unit
250 400 ns
550 800 ns
2
µs
2
µs
250 ns
250 ns
1
µs
0.6
1 MHz
5.5
mA
±5
mV
500
ns
1
µs
1.5
2
µs
13
µs
61
µs
10
µA
5.5
mA
12
µs
60
µs
40
60
Ω
5.6 7.1
A
40
60
Ω
1
µA
200
ns
100
ns
6/25
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