TPA2014D1 Datasheet, PDF (6/27 Pages) Texas Instruments – 1.5-W CONSTANT OUTPUT POWER CLASS-D AUDIO AMPLIFIER WITH INTEGRATED BOOST CONVERTER

TPA2014D1
SLAS559A – MAY 2008 – REVISED JUNE 2008 ............................................................................................................................................................... www.ti.com
BOOST CONVERTER DC CHARACTERISTICS
T_A = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_CC
V_FB
I_OL
R_{ON_PB}
R_{ON_NB}
I_L
Output voltage range
Feedback voltage
Output current limit, Boost_max
PMOS switch resistance
NMOS resistance
Line regulation
Load regulation
Start up current limit, Boost
No Load, 1.8 V < V_DD < 5.2 V,
V_CC = 5.5 V
V_DD = 3.6 V, 0 < I_L < 500 mA,
V_CC = 5.5 V
MIN
TYP MAX UNIT
3
5.5 V
490
500
510 mV
750
mA
220
mΩ
170
mΩ
3
mV/V
30
0.4×I_Boost
mV/A
mA
CLASS D AMPLIFIER DC CHARACTERISTICS
T_A = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
CMR
CMRR
Input common mode range
Input common mode rejection
V_in = ±100 mV, V_DD = 2.5 V, V_CC = 3 V, R_L = 8 Ω
V_in = ±100 mV, V_DD = 2.5 V, V_CC = 3.6 V, R_L = 8 Ω
V_in = ±100 mV, V_DD = 3.6 V, V_CC = 5.5 V, R_L = 8 Ω
R_L = 8 Ω, V_icm = 0.5 and V_icm = V_CC – 0.8, differential
inputs shorted
V_OO
Output offset voltage
Class-D
V_CC = 3.6 V, Av = 2 V/V, IN+ = IN– = V_ref, R_L = 8 Ω
V_CC= 3.6 V, Av = 6 V/V, IN+ = IN– = V_ref, R_L = 8 Ω
V_CC= 3.6 V, Av = 10 V/V, IN+ = IN– = V_ref, R_L = 8 Ω
V_CC = 5.5 V, Av = 2 V/V, IN+ = IN– = V_ref, R_L = 8 Ω
Gain = 2 V/V (6 dB)
R_in
Input Impedance
Gain = 6 V/V (15.5 dB)
Gain = 10 V/V (20 dB)
R_DS(on)
R_DS(on)
OUTP High-side FET On-state
series resistance
OUTP Low-side FET On-state
series resistance
OUTN High-side FET On-state ^{IOUTx = –300 mA; VCC = 3.6 V}
series resistance
OUTN Low-side FET On-state
series resistance
Low Gain
GAIN ≤ 0.35 V
A_V
Mid Gain
High Gain
GAIN = 0.8 V
GAIN ≥ 1.35 V
MIN TYP MAX UNIT
0.5
2.2
0.5
2.8 V
0.5
4.7
–75
dB
1
6
1
6
mV
1
6
1
6
32
15
kΩ
9.5
0.36
0.36
Ω
0.36
0.36
1.8
2 2.2 V/V
5.7
6 6.3 V/V
9.5
10 10.5 V/V
AC CHARACTERISTICS
T_A = 25°C, V_DD = 3.6V, R_L = 8 Ω + 33 µH, L = 6.2 µH (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
t_START
η
Start up time
Efficiency
2.5 V ≤ V_DD ≤ 5.5 V, C_IN ≤ 1 µF
THD+N = 1%, V_CC = 5 V, V_DD = 3.6 V,
Pout = 1.2 W, C_boost= 47µF
THD+N = 1%, V_CC = 5 V, V_DD = 4.2 V,
Pout = 1.2 W
Thermal Shutdown
Threshold
TYP
7.5
85%
87.5%
150
MAX
UNIT
ms
°C
6
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