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TPA2014D1YZHT Datasheet(PDF) 3 Page - Texas Instruments

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No. de pieza TPA2014D1YZHT
Descripción Electrónicos  1.5-W CONSTANT OUTPUT POWER CLASS-D AUDIO AMPLIFIER WITH INTEGRATED BOOST CONVERTER
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPA2014D1YZHT Datasheet(HTML) 3 Page - Texas Instruments

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PWM
and
Level
Shifter
H-Bridge
Internal
Oscillator
Biases, Control,
and
References
Regulator
V
max
Control
Gate
Control
Anti-
Ringing
PGND
AGND
BGControl
PGND
AGND
V
OUT
CC
Vref
AGND
IN+
IN–
SDb
V
DD
SW
V
OUT
CC
V
FB
CC
V
IN
CC
VOUT+
VOUT–
PGND
SDd
Res.
Array
GAIN
TPA2014D1
www.ti.com ............................................................................................................................................................... SLAS559A – MAY 2008 – REVISED JUNE 2008
Functional Block Diagram
Table 1. BOOST CONVERTER MODE CONDITION
CASE
OUTPUT CURRENT
MODE OF OPERATION
VDD < VCC
Low
Continuous (fixed frequency)
VDD < VCC
High
Continuous (fixed frequency)
VDD ≥ VCC
Low
Discontinuous (variable frequency)
VDD ≥ VCC
High
Discontinuous (variable frequency)
Table 2. DEVICE CONFIGURATION
Boost
Class D
SDb
SDd
Comments
Converter
Amplifier
low
low
OFF
OFF
Device is in shutdown mode Iq
≤ 1
µA
Boost converter is off. Class-D Audio Power Amplifier (APA) can be driven by an
low
high
OFF
ON
external pass transistor connected to the battery.
high
low
ON
OFF
Class-D APA is off. Boost Converter is on and can be used to drive an external device.
Boost converter and Class-D APA are on. Normal operation. Boost converter can be
high
high
ON
ON
used to drive an external device in parallel to the Class-D APA within the limits of the
boost converter output current.
Copyright © 2008, Texas Instruments Incorporated
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