- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10252 > SI8244BB-C-IS1 (Silicon Laboratories Inc)IC AUDIO DRIVER PWM 16-SOIC PDF資料下載
參數(shù)資料
| 型號(hào)： | SI8244BB-C-IS1 |
| 廠商： | Silicon Laboratories Inc |
| 文件頁數(shù)： | 10/30頁 |
| 文件大小： | 0K |
| 描述： | IC AUDIO DRIVER PWM 16-SOIC |
| 標(biāo)準(zhǔn)包裝： | 48 |
| 類型： | 音頻驅(qū)動(dòng)器 |
| 應(yīng)用： | D 類音頻放大器 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOIC N |
| 包裝： | 管件 |
| 其它名稱： | 336-2001-5 SI8244BB-B-IS1 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當(dāng)前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
Si824x
18
Rev. 1.0
3.4. Power Supply Connections
Isolation requirements mandate individual supplies for VDDI, VDDA, and VDDB. The decoupling caps for these
supplies must be placed as close to the VDD and GND pins of the Si824x as possible. The optimum values for
these capacitors depend on load current and the distance between the chip and the regulator that powers it. Low
effective series resistance (ESR) capacitors, such as Tantalum, are recommended.
3.5. Power Dissipation Considerations
Proper system design must assure that the Si824x operates within safe thermal limits across the entire load range.
The Si824x total power dissipation is the sum of the power dissipated by bias supply current, internal switching
losses, and power delivered to the load. Equation 1 shows total Si824x power dissipation. In a non-overlapping
system, such as a high-side/low-side driver, n = 1.
Equation 1.
The maximum power dissipation allowable for the Si824x is a function of the package thermal resistance, ambient
temperature, and maximum allowable junction temperature, as shown in Equation 2:
Equation 2.
Substituting values for PDmax Tjmax, TA, and ja into Equation 2 results in a maximum allowable total power
dissipation of 1.19 W. Maximum allowable load is found by substituting this limit and the appropriate datasheet
values from Table 1 on page 5 into Equation 1 and simplifying. The result is Equation 3 (0.5 A driver) and
Equation 4 (4.0 A driver), both of which assume VDDI = 5 V and VDDA = VDDB = 18 V.
Equation 3.
Equation 4.
P
D
V
DDIIDDI
2V
DDOIQOUT
C
intVDDO
2
F
+
2n C
LVDDO
2
F
++
where:
P
D is the total Si824x device power dissipation (W)
I
DDI is the input-side maximum bias current (3 mA)
I
QOUT is the driver die maximum bias current (2.5 mA)
C
int is the internal parasitic capacitance (75 pF for the 0.5 A driver and 370 pF for the 4.0 A driver)
V
DDI is the input-side VDD supply voltage (4.5 to 5.5 V)
V
DDO is the driver-side supply voltage (10 to 24 V)
F is the switching frequency (Hz)
n is the overlap constant (max value = 2)
=
P
Dmax
T
jmax
T
A
–
ja
---------------------------
where:
P
Dmax = Maximum Si824x power dissipation (W)
T
jmax = Si824x maximum junction temperature (150 °C)
T
A = Ambient temperature (°C)
ja = Si824x junction-to-air thermal resistance (105 °C/W)
F = Si824x switching frequency (Hz)
C
L(MAX)
1.4
10
3
–
F
--------------------------
7.5
–
10
11
–
=
C
L(MAX)
1.4
10
3
–
F
--------------------------
3.7
–
10
–
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MS27468T17A35S | CONN RCPT 55POS JAM NUT W/SCKT |
| MS27497T24F61P | CONN RCPT 61POS WALL MNT W/PINS |
| VE-26D-MY | CONVERTER MOD DC/DC 85V 50W |
| VE-26B-MY | CONVERTER MOD DC/DC 95V 50W |
| MS27472E8F35PD | CONN RCPT 6POS WALL MNT W/PINS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI8244BB-C-IS1R | 制造商:Silicon Laboratories Inc 功能描述:Class D Audio Driver 16-Pin SOIC N T/R 制造商:Silicon Laboratories Inc 功能描述:CLASS D AUDIO DRIVER - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC AUDIO DRIVER PWM 16-SOIC 制造商:Silicon Laboratories Inc 功能描述:2.5kV 4A "D" Audio Drvr 8V UVLO PWM in 制造商:Silicon Laboratories 功能描述:Class D Audio Driver 16-Pin SOIC N T/R |
| SI8244BB-D-IS1 | 功能描述:IC AUDIO DRIVER PWM 16-SOIC 制造商:silicon labs 系列:- 包裝:管件 零件狀態(tài):有效 功能:線路驅(qū)動(dòng)器 應(yīng)用:前置放大器 通道數(shù):2 接口:模擬 電壓 - 電源:4.5 V ~ 5.5 V 工作溫度:-40°C ~ 125°C（TA） 規(guī)格:D 類 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商器件封裝:16-SOIC 標(biāo)準(zhǔn)包裝:48 |
| Si8244CB-B-IS1 | 功能描述:音頻放大器 2.5kV 4A Class D Audio Drivr 10V UVLO RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| Si8244CB-C-IS1 | 功能描述:音頻放大器 2.5kV 4A Class D Audio Drivr 10V UVLO RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| SI8244CB-C-IS1R | 制造商:Silicon Laboratories Inc 功能描述:CLASS D AUDIO DRIVER - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC AUDIO DRIVER PWM 16-SOIC 制造商:Silicon Laboratories Inc 功能描述:2.5kV 4A "D" Audio 10V UVLO PWM input |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。