SI824XCLASSD-KIT Silicon Laboratories Inc, SI824XCLASSD-KIT Datasheet - Page 21

BOARD EVAL FOR SI824X

SI824XCLASSD-KIT

Manufacturer Part Number
SI824XCLASSD-KIT
Description
BOARD EVAL FOR SI824X
Manufacturer
Silicon Laboratories Inc
Datasheet

Specifications of SI824XCLASSD-KIT

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Class-D Audio Driver_Precision Clock ICs
Board Type
Fully Populated
Amplifier Type
Class D
Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
120W x 2 @ 8 Ohm
Utilized Ic / Part
Si824x
Description/function
Audio Amplifiers
Operating Supply Voltage
12 V
Output Power
30 W to 1000 W
Product
Audio Development Tools
Supply Current
500 mA
For Use With/related Products
Si824x
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Supply
-
Operating Temperature
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
336-2002
3.7.3. Undervoltage Lockout (UVLO)
The UVLO circuit unconditionally drives VO low when VDD is below the lockout threshold. Referring to Figures 34
and 35, upon power up, the Si824x is maintained in UVLO until VDD rises above VDD
Si824x enters UVLO when VDD falls below the UVLO threshold plus hysteresis (i.e., VDD < VDD
3.7.4. Control Inputs
PWM inputs are high-true, TTL level-compatible logic inputs. VOA is high and VOB is low when the PWM input is
high, and VOA is low and VOB is high when the PWM input is low.
3.7.5. Disable Input
When brought high, the DISABLE input unconditionally drives VOA and VOB low regardless of the states of input.
Device operation terminates within tSD after DISABLE = V
The DISABLE input has no effect if VDDI is below its UVLO level (i.e. VOA, VOB remain low). The DISABLE input
is typically connected to external protection circuitry to unconditionally halt driver operation in the event of a fault.
6.0
Figure 34. Si824x UVLO Response (8 V)
6.5
Supply Voltage (V
7.0
7.5
8.0
DD
8.5
- V
V
DDUV+
SS
9.0
) (V)
(Typ)
9.5 10.0
Rev. 0.2
IH
and resumes within tRESTART after DISABLE = V
Figure 35. Si824x UVLO Response (10 V)
8.5
9.0
Supply Voltage (V
9.5
10.0 10.5 11.0 11.5 12.0 12.5
UV+
DD
. During power down, the
- V
V
DDUV+
SS
) (V)
(Typ)
UV+
Si824x
– VDD
HYS
).
IL
21
.

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