TFA9892_SDS All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017. All rights reserved.
Product short data sheet Rev. 1.0 — 1 September 2017 12 of 27
NXP Semiconductors
TFA9892
12 V boosted audio system with adaptive sound maximizer and
speaker protection
11. Characteristics
11.1 DC Characteristics
Table 6. DC characteristics
All parameters are guaranteed for V
BAT
= 3.6 V; V
DDD
= 1.8 V; V
DDP
=V
BST
= 12 V, adaptive boost mode; L
BST
=1
H
[1]
;
R
L
=8
[1]
; L
L
=40
H
[1]
; f
i
= 1 kHz; f
s
= 48 kHz; T
amb
=25
C; default settings, unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
V
BAT
battery supply voltage on pin VBAT 2.7 - 5.5 V
I
BAT
battery supply current on pin VBAT and in DC-to-DC converter
coil; Operating modes with load;
DC-to-DC converter in Adaptive Boost
mode (no output signal, V
BAT
=3.6 V;
V
DDD
=1.8V)
-2.45- mA
Power-down mode - 1 5 A
V
DDP
power supply voltage on pin VDDP 2.7 - 12.2 V
V
DDD
digital supply voltage on pin VDDD; Brown out detector
(BOD) disabled.
[3]
1.65 1.8 1.95 V
I
DDD
digital supply current on pin VDDD; Operating mode; no
audio stream at the input; DSP enabled;
SpeakerBoost activated
-20- mA
Operating mode; no audio content;
DSP bypassed
-4.5- mA
Power-down mode - 15 - A
Power-down mode; internal oscillator
enabled
-50- A
Pins DIO1,2,3,4, BCK1, FS1, BCK2, FS2, ADS1, ADS2, SCL, SDA
V
IH
HIGH-level input voltage 0.7V
DDD
-V
DDD
V
V
IL
LOW-level input voltage - - 0.3V
DDD
V
C
in
input capacitance
[2]
--3pF
I
LI
input leakage current 1.8 V on input pin - - 0.1 A
Pins DIO1,2,3,4, SPDMI, INT, push-pull output stages
V
OH
HIGH-level output voltage I
OH
=4 mA - - V
DDD
0.4
V
V
OL
LOW-level output voltage I
OL
=4 mA - - 400 mV
Pins SDA, open drain outputs, external 10 k resistor to V
DDD
V
OH
HIGH-level output voltage I
OH
=4 mA - - V
DDD
0.4
V
V
OL
LOW-level output voltage I
OL
=4 mA - - 400 mV
Pins OUTA, OUTB
R
DSon
drain-source on-state
resistance
Amplifier Active, NMOS + PMOS
V
DDP
=12V
-600- m
Protection
T
act(th_prot)
thermal protection activation
temperature
130 - 150 C
V
uvp(VBAT)
undervoltage protection
voltage on pin VBAT
2.3 - 2.5 V
