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LC-22LE250
LC-24LE250
B. MAIN AMPLIFIER (TS4962M)(2.5 W option)
a. General Description
The TS4962M is a di erential Class-D BTL power amp li er. It is able to drive up to 2.3W
into a 4 load and 1.4W into a 8 load at 5V. It achieves outstanding e ciency (88 %typ.)
compared to classical Class-AB audio amps. The gain of the device can be controlled via two
external gain-setting resistors. Pop & click reduct i on circuitry provides low on/o switch
noise while allowing the device to start within 5ms . A standby function (active low) allows
the reduction of current consumption to 10nA typ.
b. Features
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Operating from VCC = 2.4V to 5.5V
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Standby mode active low
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Output power: 3W into 4 and 1.75W into 8
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with 10% THD+N max and 5V power supply.
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Output power: 2.3W @5V or 0.75W @ 3.0V
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into 4 with 1% THD+N max.
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Output power: 1.4W @5V or 0.45W @ 3.0V
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into 8 with 1% THD+N max.
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Adjustable gain via external resistors
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Low current consumption 2mA @ 3V
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E ciency: 88% typ.
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Signal to noise ratio: 85dB typ.
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PSRR: 63dB typ. @217Hz with 6dB gain
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PWM base frequency: 250kHz
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Low pop & click noise
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Thermal shutdown protection
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Available in ip-chip 9 x 300 m (Pb-free)
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Table 3: Recomnended operating conditions
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