TDF8551J datasheet, PDF - EEWORLD Datasheet

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TDF8551J: Descriptionthe tdf8551j has a complementary quad audio power ampliﬁer that uses bcdmos technology.; CategoryAnalog mixed-signal IC Consumption circuit; File Size394KB，47 Pages; ManufacturerNXP; Websitehttps://www.nxp.com

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TDF8551J Overview

the tdf8551j has a complementary quad audio power ampliﬁer that uses bcdmos technology.

TDF8551J Parametric

Parameter Name	Attribute value
Maker	NXP
Parts packaging code	SOT
package instruction	PLASTIC, SOT725-1, SIL-37
Contacts	37
Manufacturer packaging code	SOT725-1
Reach Compliance Code	unknown
ECCN code	EAR99
Nominal bandwidth	22 kHz
Commercial integrated circuit types	AUDIO AMPLIFIER
harmonic distortion	1%
JESD-30 code	R-PZFM-T37
Number of channels	4
Number of functions	1
Number of terminals	37
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Nominal output power	69 W
Package body material	PLASTIC/EPOXY
Package shape	RECTANGULAR
Package form	FLANGE MOUNT
Certification status	Not Qualified
Maximum supply voltage (Vsup)	18 V
Minimum supply voltage (Vsup)	8 V
surface mount	NO
Temperature level	INDUSTRIAL
Terminal form	THROUGH-HOLE
Terminal location	ZIG-ZAG

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TDF8551J

C-bus controlled 4

45 W power ampliﬁer with six voltage

regulators

Rev. 02 — 18 August 2009

Product data sheet

1. General description

1.1 Ampliﬁers

The TDF8551J has a complementary quad audio power ampliﬁer that uses BCDMOS

technology. It contains four ampliﬁers conﬁgured in Bridge-Tied Load (BTL) to drive four

speakers: two front and two rear channels. The I

C-bus enables diagnostic information of

each ampliﬁer and its speaker to be read separately. Both front and both rear channel

ampliﬁers can be conﬁgured independently in line driver mode with a gain of 20 dB

(differential output) or ampliﬁer mode with a gain of 26 dB (BTL output).

1.2 Voltage regulators and switches

The TDF8551J has six output voltage regulators and two power switches:

•

Four switchable regulators and two standby regulators

Two power switches with loss-of-ground protection and surge protection

Second supply pin to reduce dissipation by means of an external DC-to-DC converter

Backup functionality for regulator 2

2. Features

Ampliﬁers

C-bus control

Can drive a 2

Ω

load with a battery voltage of up to 16 V and a 4

Ω

load with a

battery voltage of up to 18 V

DC load detection: open, short and present

AC load (tweeter) detection

Programmable clip detect; 1 % or 3 %

Programmable thermal protection pre-warning

Independent short-circuit protection for each channel

Selectable line driver (20 dB) and ampliﬁer mode (26 dB)

Loss-of-ground and open V

safe

All outputs protected from short-circuit to ground, to V

or across the load

All pins protected from short-circuit to ground

Soft thermal-clipping to prevent audio holes

Low battery detection

Voltage regulators and switches

C-bus control

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