参数资料
| 型号： | LA4425A-E |
| 厂商： | ON Semiconductor |
| 文件页数： | 8/9页 |
| 文件大小： | 0K |
| 描述： | IC AUDIO POWER AMP 5W TO-126ML |
| 标准包装： | 200 |
| 类型： | AB 类 |
| 输出类型： | 1-通道（单声道） |
| 在某负载时最大输出功率 x 通道数量： | 6W x 1 @ 4 欧姆 |
| 电源电压： | 5 V ~ 16 V |
| 特点： | 消除爆音，过压保护，短路保护，热保护 |
| 安装类型： | * |
| 供应商设备封装： | * |
| 封装/外壳： | * |
| 包装： | * |
LA4425A
No.A0195-8/9
Load Resistance and Misoperation
It should be noted that when RL < 2Ω and VCC is high, and the switch is turned “ON” when setting is for a signal
(THD = 10%), the ground detector (current
× voltage Schmitt circuit) operates momentarily.
Precautions on TaB
If power voltage is applied to the IC substrate (the heat sink on a set), the IC structure is such that the PN junctions
may be burned, causing deterioration or destruction. Consult Our company’s Quality Assurance Department with
regard to the energy handling capability (voltage peak value, pulse width). Also, the IC TaB (substrate) is connected
to pin 3, large signal GND.
Test of +VCC to Output Pin
The power pin is in a floating state when a power capacitor is connected, so if +VCC touches output lines a and b , the
upper power transistor inside the IC will be damaged.
The LA4425A has a protective bypass route inside the IC.
Starting Time (ts)
This is set at 0.35sec/typ, but it can be made shorter by making input capacitor Ci smaller, or longer by making it
larger.
Pop noise
The pop noise prevention circuit operates to reduce pop until Rg reaches 50k
Ω. However, if Rg is left open, the
charging route of input capacitor Ci is lost, so the pop noise reduction circuit stops operating and click noises become
louder.
VG/OSC
The voltage gain is fixed at 45dB inside the IC. It is impossible to change it externally.
Phase compensation capacitors (350pF/total) are connected between individual stages inside the IC, and the open
loop gain is low. In addition, the upper and lower drives are made equivalent so that final stage current gain is
adjusted, providing a measure against unwanted high-frequency parasitic oscillation peculiar to power IC’s.
BTL Connection
Connection is impossible with IC alone.
Reverse Mounting of IC
The pin assignment is such that there is no danger of damage.
T.S.D (Thermal Shutdown) Operating Temperature
+
LA4425A
13.2V
a
b
Floating
0
20
40
60
80
100
120
140
160
180
Tc (
°C)
I CC
,P
O
30
×30×1.5mm3 thick Al board
Ta=25
°C
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PDF描述 |
|---|---|
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| LA4625-E | IC BTL PWR AMP 13.5W 2CH SIP14HZ |
| LA4708N-E | IC BTL PWR AMP 20W 2CH SIP18H |
| LDS6000NQGI | IC SENSOR TCH PURETOUCH 28VFQFPN |
| LDS6003PYGI | IC SENSOR TCH PURETOUCH 28SSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LA4425A-MTK-E | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LA4425AN-D-E | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LA4425F-E | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LA4425PV | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Monolithic Linear IC For Car Radio and Car Stereo 5W Power Amplifier with Very Few External Parts |
| LA4425PV-MPB-H | 功能描述:功率放大器 AUDIO POWER AMP RoHS:否 制造商:TriQuint Semiconductor 封装 / 箱体: 工作电源电压:28 V 电源电流:2.5 A 工作温度范围: 封装: |
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