Power Amplifier. LA4270 Datasheet
Ordering number : EN1272740FC
Monolithic Linear IC
AF Power Amplifier
The LA4270 is a High-output dual-channel AF Power IC.
(PO = 6.0W×2, VCC = 25V, RL = 8Ω, f = 1kHz, THD = 1.0%)
• Low distortion (THD = 0.1%, VCC = 25V, RL = 8Ω, f = 1kHz, PO = 2W).
• Minimum number of external parts required (no bootstrap capacitor required).
• Low pop noise at the time of power switch ON/OFF.
• High ripple rejection (58dB typ).
• Wide supply voltage range (10V to 32V).
• On-chip protector against abnormality (thermal shutdown, overvoltage).
Maximum Ratings at Ta = 25°C
Maximum supply voltage
Maximum output current
Allowable power dissipation
With heat sink. See Pd-Ta graph.
Operating Conditions at Ta = 25°C
Recommended supply voltage
Operating voltage range
Recommended load resistance
−20 to +75
−40 to +150
10 to 32
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
82708 MS JK/21500 (KT)/40194HK/3210MO/8026KI/6126AT/6245KI, TS No.1724-1/10
Electrical Characteristics at Ta = 25°C, VCC = 25V, RL = 8Ω, f = 1kHz, Rg = 600Ω, See specified test circuit
min typ max
25 45 90 mA
38 40 42 dB
Total harmonic distortion
Output noise voltage
THD = 1%
PO = 2W
Rg = 10kΩ, BW = 20Hz to 20kHz
Rg = 10kΩ, fR = 100Hz, VR = 0dBm
Rg = 10kΩ
unit : mm (typ)
Pd max -- Ta
Infinite heat sink
Al heat sink
12 100×100×1.5mm 3
4 No heat sink
20 40 60 80 100 120 140 160
Ambient Temperature, Ta -- °C
Sample Printed Circuit Pattern