Si8244 SILABS [Silicon Laboratories], Si8244 Datasheet - Page 6

• Manufacturer Part Number: Si8244
• Description: CLASS D AUDIO DRIVER WITH PRECISION DEAD-TIME GENERATOR
• Manufacturer: SILABS [Silicon Laboratories]

Si824x
Table 1. Electrical Characteristics
4.5 V < VDDI < 5.5 V, VDDA = VDDB = 12 V or 15 V. TA = –40 to +125 °C. Typical specs at 25 °C
6
Parameter
VDDI Undervoltage Threshold
VDDI Undervoltage Threshold
VDDI Lockout Hysteresis
VDDA, VDDB Undervoltage
Threshold
8 V Threshold
10 V Threshold
VDDA, VDDB Undervoltage
Threshold
8 V Threshold
10 V Threshold
VDDA, VDDB
Lockout Hysteresis
VDDA, VDDB
Lockout Hysteresis
AC Specifications
Minimum Pulse Width
Propagation Delay
Pulse Width Distortion
|t
Programmed Dead Time
Output Rise and Fall Time
Shutdown Time from
Disable True
Restart Time from
Disable False
Device Start-up Time
Common Mode
Transient Immunity
Notes:
PLH
1. VDDA = VDDB = 12 V for 8 V UVLO and 10 V UVLO devices.
2. The largest RDT resistor that can be used is 220 k.
- t
PHL
|
2
VDDA
VDDA
VDDA
VDDA
VDDB
VDDB
VDDB
VDDB
t
VDDI
VDDI
VDDI
t
Symbol
PHL
RESTART
t
CMTI
PWD
START
t
DT
R
t
SD
, t
,t
1
HYS
UV+
UV–
HYS
HYS
UV+
UV–
F
HYS
HYS
PLH
UV+
UV–
(Continued)
,
,
,
,
VIA, VIB, PWM = VDDI or 0 V
Time from VDD_ = VDD_UV+
See Figure 34 on page 21.
See Figure 35 on page 21.
See Figure 34 on page 21.
See Figure 35 on page 21.
to VOA, VOB = VIA, VIB
See Figures 36 and 37
UVLO voltage = 10 V
VDDA, VDDB falling
UVLO voltage = 8 V
VDDA, VDDB rising
C
C
Rev. 0.2
Test Conditions
L
L
= 1 nF (Si8241)
= 1 nF (Si8244)
VDDI falling
VDDI rising
CL = 1 nF
3.60
3.30
7.50
9.60
7.20
9.40
Min
0.4
25
—
—
—
—
—
—
—
—
—
—
—
1000
3.70
8.60
8.10
10.1
11.1
Typ
250
600
1.0
4.0
10
25
—
—
—
—
45
—
5
1000
Max
4.45
4.15
9.40
12.2
8.70
10.9
5.60
60
20
12
60
60
—
—
—
—
—
7
Units
kV/µs
mV
mV
mV
ns
ns
ns
ns
ns
ns
ns
ns
µs
V
V
V
V
V
V