Datasheet

L6228
6/26
V
th(ON)
Turn-on Input Threshold 1.8 2.0 V
V
th(OFF)
Turn-off Input Threshold 0.8 1.3 V
V
th(HYS)
Input Threshold Hysteresis 0.25 0.5 V
Switching Characteristics
t
D(ON)EN
Enable to Output Turn-on Delay
Time
(8)
I
LOAD
=1.4A, Resistive Load 500 650 800 ns
t
D(OFF)EN
Enable to Output Turn-off Delay
Time
(8)
I
LOAD
=1.4A, Resistive Load 500 800 1000 ns
t
RISE
Output Rise Time
(8)
I
LOAD
=1.4A, Resistive Load 40 250 ns
t
FALL
Output Fall Time
(8)
I
LOAD
=1.4A, Resistive Load 40 250 ns
t
DCLK
Clock to Output Delay Time
(9)
I
LOAD
=1.4A, Resistive Load 2 µs
t
CLK(min)L
Minimum Clock Time
(10)
s
t
CLK(min)
H
Minimum Clock Time
(10)
s
f
CLK
Clock Frequency
100 KHz
t
S(MIN)
Minimum Set-up Time
(11)
s
t
H(MIN)
Minimum Hold Time
(11)
s
t
R(MIN)
Minimum Reset Time
(11)
s
t
RCLK(MIN
)
Minimum Reset to Clock Delay
Time
(11)
s
t
DT
Dead Time Protection 0.5 1 µs
f
CP
Charge Pump Frequency
T
j
= -25°C to 125°C
(7)
0.6 1 MHz
PWM Comparator and Monostable
I
RCA,
I
RCB
Source Current at pins RC
A
and
RC
B
V
RCA
= V
RCB
= 2.5V 3.5 5.5 mA
V
offset
Offset Voltage on Sense
Comparator
V
REFA,
V
REFB
= 0.5V ±5 mV
t
PROP
Turn OFF Propagation Delay
(12)
500 ns
t
BLANK
Internal Blanking Time on
SENSE pins
s
t
ON(MIN)
Minimum On Time 2.5 3 µs
t
OFF
PWM Recirculation Time R
OFF
= 20KΩ; C
OFF
= 1nF
13
µs
R
OFF
= 100KΩ; C
OFF
= 1nF
61
µs
ELECTRICAL CHARACTERISTICS (continued)
(T
amb
= 25°C, V
s
= 48V, unless otherwise specified)
Symbol Parameter Test Conditions Min Typ Max Unit