Ordering number : ENA2033 Monolithic Linear IC LA4537MC Power Amplifier For 1.5V Headphone Stereos Features • Low current drain • 16Ω load drive capability • Excellent reduced voltage characteristics • Excellent power supply ripple rejection • Minimum number of external parts required (no input capacitor, feedback capacitor required) • Less harmonic interference in radio band • On-chip power switch function, muting function Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Allowable power dissipation Symbol VCC max Conditions Ratings Quiescent Pd max Unit 4.5 V 290 mW Operating temperature Topr −20 to +75 °C Storage temperature Tstg −40 to +125 °C Operating Conditions at Ta = 25°C Parameter Recommended supply voltage Operating voltage range Recommended load resistance Symbol VCC Conditions Ratings Unit 1.5 V VCC op 0.9 to 4.0 V RL 16 to 32 Ω 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. 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 new introduction or other application different from current conditions on the usage of automotive device, communication device, office equipment, industrial equipment etc. , please consult with us about usage condition (temperature, operation time etc.) 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 equipment. 32112 SY 20120301-S00005 No.A2033-1/4 LA4537MC Electrical Characteristics at Ta = 25°C, RL = 16Ω, Rg = 600Ω, See specified Test Circuit. Ratings Parameter Symbol Conditions Unit min Quiescent current typ max ICCO1 VCC = 1.2V, quiescent 3.5 6.0 mA ICCO2 VCC = 2.5V, pin 10 → GND 1.4 2.5 mA ICCO3 VCC = 2.5V, pin 1 → GND 1.0 μA 31.5 dB 1.0 dB 1.5 % Voltage gain VG VCC = 1.2V, f = 1kHz, VO = −20dBm Voltage gain difference ΔVG VCC = 1.2V, f = 1kHz, VO = −20dBm Total harmonic distortion THD VCC = 1.2V, f = 1kHz, PO = 0.5mW Output power PO VCC = 1.5V, f = 1kHz, THD = 10% 5 8 mW Crosstalk CT VCC = 1.2V, f = 100Hz, Rg = 1kΩ, 40 45 dB SVRR VO = −20dB VCC = 1.0V, f = 100Hz, Rg = 1kΩ, 40 46 dB Ripple rejection 28.5 30.0 0.5 VR = −30dBm, BPF = 100Hz VCC = 2.5V, Rg = 1kΩ, BPF = 20Hz to 20kHz 55 80 μV I1 (on) VCC = 0.85V, V5 ≥ 0.5V 0.1 1.0 μA Power off voltage sensitivity V1 (off) VCC = 0.85V, V5 ≤ 0.1V Muting off current sensitivity I10 (off) VCC = 0.85V, V5 ≥ 0.5V 1.0 μA Muting on voltage sensitivity V10 (on) VCC = 0.85V, V5 ≤ 0.1V Output noise voltage VNO Power on current sensitivity 0.5 0.6 0.1 0.5 0.6 V V Note) The quiescent current is respresented by the current flowing into pin 6. The respective maximum currents flowing into pin 1 and pin 10 are calculated by (pin voltage -0.5) / 16 [V/kΩ] and the total current increases by these current values. Package Dimensions unit : mm (typ) 3426 5.0 5 0.35 1.75 MAX 0.15 1.5 1.0 0.175 1 0.835 0.37 6.4 6 4.4 10 SANYO : SOIC10 No.A2033-2/4 LA4537MC Block Diagram Test Circuit I1 I10 2 P/SW 3 1 LA4537MC 1 V1 1 1 P/SW MT/SW 10 MT/SW 4 4 2 2 IN 1 3 PRE GND 4 IN 2 5 REF Rg OUT 1 9 POWER GND 8 OUT 2 7 2 V10 3 + + + SG VR RL 1 2 Rg RL VCC + DC VCC 6 RIPPLE A ICC Sample Application Circuit 1 (Standard) LA4537MC ON P/SW OFF VR SG 2 MT/SW 10 OFF MT/SW ON VR SG 1 1 P/SW 2 IN 1 3 PRE GND 4 IN 2 OUT 1 9 POWER GND 8 OUT 2 7 + + RL + + 5 REF RL + VCC VCC 6 No.A2033-3/4 LA4537MC Sample Application Circuit 2 (Output capacitor shared) LA4537MC ON P/SW OFF 1 P/SW MT/SW 10 OFF MT/SW ON RL VR VR SG 1 SG 2 2 IN 1 3 PRE GND 4 IN 2 OUT 1 9 POWER GND 8 OUT 2 7 + RL + + 5 REF + VCC VCC 6 SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of March, 2012. Specifications and information herein are subject to change without notice. PS No.A2033-4/4