LA4537M - ON Semiconductor L.L.C.

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

sproductsor

equipment.

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.

41608 MS JK/21800TN (KT)/63095HA (KOTO)/8307AT, TS No.2333-1/ 4

LA4537M

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 Symbol Conditions Ratings Unit

Maximum supply voltage VCC max Quiescent 4.5 V

Allowable power dissipation Pd max 300 mW

Operating temperature Topr −20 to +75 °C

Storage temperature Tstg −40 to +125 °C

Operating Conditions at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Recommended supply voltage VCC 1.5 V

Operating voltage range VCC op 0.9 to 4.0 V

Recommended load resistance RL 16 to 32 Ω

Monolithic Linear IC

Power Amplifier For 1.5V Headphone Stereos

Orderin

numbe

: EN2333C

LA4537M

No.2333-2/4

Electrical Characteristics at Ta = 25°C, RL = 16Ω, Rg = 600Ω, See specified Test Circuit.

Ratings

Parameter Symbol Conditions min typ max

Unit

ICCO1 VCC = 1.2V, quiescent 3.5 6.0 mA

ICCO2 VCC = 2.5V, pin 10 → GND 1.4 2.5 mA

Quiescent current

ICCO3 VCC = 2.5V, pin 1 → GND 1.0 µA

Voltage gain VG VCC = 1.2V, f = 1kHz, VO = −20dBm 28.5 30.0 31.5 dB

Voltage gain difference ∆VG VCC = 1.2V, f = 1kHz, VO = −20dBm 1.0 dB

Total harmonic distortion THD VCC = 1.2V, f = 1kHz, PO = 0.5mW 0.5 1.5 %

Output power PO V

CC = 1.5V, f = 1kHz, THD = 10% 5 8 mW

Crosstalk CT VCC = 1.2V, f = 100Hz, Rg = 1kΩ,

VO = −20dB 40 45 dB

Ripple rejection SVRR VCC = 1.0V, f = 100Hz, Rg = 1kΩ,

VR = −30dBm, BPF = 100Hz 40 46 dB

Output noise voltage VNO V

CC = 2.5V, Rg = 1kΩ, BPF = 20Hz to 20kHz 55 80 µV

Power on current sensitivity 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 0.5 0.6 V

Muting off current sensitivity I10 (off) VCC = 0.85V, V5 ≥ 0.5V 0.1 1.0 µA

Muting on voltage sensitivity V10 (on) VCC = 0.85V, V5 ≤ 0.1V 0.5 0.6 V

Note) The quiescent curre nt is resprese nted by the current flow ing into pin 6. Th e respectiv e maximum currents flow ing 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)

3086B

LA4537M

No.2333-3/4

Block Diagram

Test Circuit

LA4537M

PS No.2333-4/4

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.

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.

Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed

for volume production.

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.

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Sample Application Circuit 1

Sample Application Circuit 2

This catalog provides information as of April, 2008. Specifications and information herein are subject to

change without notice.

(Output capacitor shared)

(Standard)