NCP2993
1.3 Watt Audio Power
Amplifier with Selectable
Fast Turn On Time
The NCP2993 is an audio power amplifier designed for portable
communication device applications such as mobile phone
applications. The NCP2993 is capable of delivering 1.3 W of
continuous average power to an 8.0
W
BTL load from a 5.0 V power
supply, and 1.1 W to a 4.0
W
BTL load from a 3.6 V power supply.
The NCP2993 provides high quality audio while requiring few
external components and minimal power consumption. It features a
low−power consumption shutdown mode, which is achieved by
driving the SHUTDOWN pin with logic low.
The NCP2993 contains circuitry to prevent from “pop and click”
noise that would otherwise occur during turn−on and turn−off
transitions. It is a zero pop noise device when a single ended or a
differential audio input is used.
For maximum flexibility, the NCP2993 provides an externally
controlled gain (with resistors). In addition, it integrates 2 different
Turn On times (15 ms or 30 ms) adjustable with the TON pin.
Due to its superior PSRR, it can be directly connected to the
battery, saving the use of an LDO.
This device is available in a 9−Pin Flip−Chip CSP package with a
0.4mm pitch (Lead−Free).
Features
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MARKING
DIAGRAM
WLCSP9
FC SUFFIX
CASE 499BM
2993
AYWW
G
2993
A
Y
WW
G
= Specific Device Code
= Assembly Location
= Year
= Work Week
= Pb−Free Package
PIN CONNECTIONS
A1
INM
A2
OUTA
B2
TON
C2
A3
INP
B3
VP
C3
•
1.3 W to an 8.0
W
BTL Load from a 5.0 V Power Supply
•
Best−in−Class PSRR: up to
−88
dB, Direct Connection to the
•
•
•
•
•
•
•
B1
VM
C1
BYPASS
Battery
Zero Pop Noise Signature with a Single Ended Audio Input
Ultra Low Current Shutdown Mode: 10 nA
2.5 V−5.5 V Operation
External Gain Configuration Capability
External Turn−on Time Configuration Capability: 15 ms or 30 ms
Thermal Overload Protection Circuitry
This is a Pb−Free Device*
OUTB SHUTDOWN
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
Typical Applications
•
Portable Electronic Devices
•
PDAs
•
Wireless Phones
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
©
Semiconductor Components Industries, LLC, 2011
November, 2011
−
Rev. 1
1
Publication Order Number:
NCP2993/D
NCP2993
Rf
24 kW
Cs
Ci
100 nF
Ri
24 kW
INM
INP
V
p
-
+
V
p
1
mF
V
p
AUDIO
INPUT
-
+
OUTA
R1
20 kW
R2
20 kW
OUTB
8W
BYPASS
C
bypass
1
mF
SHUTDOWN
SHUTDOWN
CONTROL
TON
Connect to V
p
or GND
VM
Figure 1. Typical Audio Amplifier Application Circuit with Single Ended Input
Rf
24 kW
Ci
+
100 nF
AUDIO
INPUT
−
Ri
24 kW
Cs
INM
INP
Ri
24 kW
24 kW
C
bypass
Rf
BYPASS
1
mF
SHUTDOWN
SHUTDOWN
CONTROL
VM
V
p
-
+
V
p
1
mF
V
p
Ci
100 nF
-
+
OUTA
R1
20 kW
R2
20 kW
OUTB
8W
TON
Connect to V
p
or GND
Figure 2. Typical Audio Amplifier Application Circuit with a Differential Input
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2
NCP2993
PIN DESCRIPTION
Pin
A1
A2
A3
B1
B2
Name
INM
OUTA
INP
VM
TON
Type
I
O
I
I
I
Description
Negative input of the first amplifier, receives the audio input signal. Connected to the feedback
resistor R
f
and to the input resistor R
in
.
Negative output of the NCP2993. Connected to the load and to the feedback resistor Rf.
Positive input of the first amplifier, receives the common mode voltage.
Analog Ground.
TON pin selects 2 different Turn On times:
TON = GND
−>
30 ms
TON = VP
−>
15 ms
Positive analog supply of the cell. Range: 2.5 V−5.5 V.
Bypass capacitor pin which provides the common mode voltage (Vp/2).
Positive output of the NCP2993. Connected to the load.
The device enters in shutdown mode when a low level is applied on this pin.
B3
C1
C2
C3
VP
BYPASS
OUTB
SHUTDOWN
I
I
O
I
MAXIMUM RATINGS
(Note 1)
Rating
Supply Voltage
Operating Supply Voltage
Input Voltage
Power Dissipation (Note 2)
Operating Ambient Temperature
Max Junction Temperature
Storage Temperature Range
Thermal Resistance Junction−to−Air
ESD Protection
Human Body Model (HBM) (Note 4)
Machine Model (MM) (Note 5)
Symbol
V
p
Op Vp
V
in
Pd
T
A
T
J
T
stg
R
qJA
−
−
Value
6.0
2.5 to 5.5 V
−0.3
to V
CC
+0.3
Internally Limited
−40
to +85
150
−65
to +150
(Note 3)
2000
200
±100
Unit
V
−
V
−
°C
°C
°C
°C/W
V
mA
Latchup Current @ T
A
= 85°C (Note 6)
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Maximum electrical ratings are defined as those values beyond which damage to the device may occur at T
A
= +25°C.
2. The thermal shutdown set to 160°C (typical) avoids irreversible damage on the device due to power dissipation.
3. The R
qJA
is highly dependent of the PCB Heatsink area. For example, R
qJA
can equal 195°C/W with 50 mm
2
total area and also 135°C/W with
500 mm
2
. The bumps have the same thermal resistance and all need to be connected to optimize the power dissipation.
4. Human Body Model, 100 pF discharge through a 1.5 kW resistor following specification JESD22/A114.
5. Machine Model, 200 pF discharged through all pins following specification JESD22/A115.
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3
NCP2993
ELECTRICAL CHARACTERISTICS
Limits apply for T
A
between
−40°C
to +85°C (Unless otherwise noted).
Characteristic
Supply Quiescent Current
Symbol
I
dd
Conditions
V
p
= 2.5 V, No Load
V
p
= 5.0 V, No Load
V
p
= 2.5 V, 8
W
V
p
= 5.0 V, 8
W
Common Mode Voltage
Shutdown Current
Shutdown Pull−Down
Shutdown Voltage High
Shutdown Voltage Low
Turn On Time (Note 8)
Turn Off Time
Output Impedance in Shutdown Mode
Output Swing
V
cm
I
SD
R
SD
V
SDIH
V
SDIL
T
WU
T
OFF
Z
SD
V
loadpeak
−
−
TON = GND
TON = VP
−
−
V
p
= 2.5 V, R
L
= 8.0
W
V
p
= 5.0 V, R
L
= 8.0
W
(Note 7)
T
A
= +25°C
V
p
= 2.5 V, R
L
= 4.0
W
THD + N < 1%
V
p
= 2.5 V, R
L
= 8.0
W
THD + N < 1%
V
p
= 5.0 V, R
L
= 8.0
W
THD + N < 1%
V
p
= 5.0 V, R
L
= 8.0
W
V
p
= 2.5 V
V
p
= 5.0 V
V
p
= 2.5 V, G = 2.0
20 Hz < F < 20 kHz
G = 2.0, R
L
= 8.0
W
C
by
= 1.0
mF
Input Grounded
F = 217 Hz
V
p
= 5.0 V
V
p
= 4.2 V
V
p
= 3.0 V
F = 1.0 kHz
V
p
= 5.0 V
V
p
= 4.2 V
V
p
= 3.0 V
Efficiency
Thermal Shutdown Temperature
Total Harmonic Distortion
h
T
sd
THD
V
p
= 2.5 V, F = 1.0 kHz
R
L
= 4.0
W,
A
V
= 2.0
P
O
= 0.32 W
V
p
= 5.0 V, F = 1.0 kHz
R
L
= 8.0
W,
A
V
= 2.0
P
O
= 1.0 W
6. Min/Max limits are guaranteed by design, test or statistical analysis.
7. This parameter is guaranteed but not tested in production in case of a 5.0 V power supply.
8. See page 10 for a theoretical approach of this parameter.
V
p
= 2.5 V, P
orms
= 320 mW
V
p
= 5.0 V, P
orms
= 1.0 W
−
Min
(Note 6)
−
−
−
−
−
−
−
1.2
−
−
−
−
1.9
3.8
−
Typ
1.8
1.95
1.8
1.95
V
p
/2
0.02
300
−
−
30
15
1.0
8.5
2.3
4.6
0.5
0.32
−
1.3
−
−
−
−
1.0
91
0.65
−
−
W
mV
dB
dB
−
−
W
Max
(Note 6)
3.5
3.5
−
0.5
−
−
0.4
−
−
−
−
−
V
mA
kW
V
V
ms
ms
kW
V
Unit
mA
RMS Output Power
P
O
Maximum Power Dissipation (Note 8)
Output Offset Voltage
Signal−to−Noise Ratio
Positive Supply Rejection Ratio
P
Dmax
V
OS
SNR
PSRR V+
−
−
−
−88
−88
−88
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−88
−88
−88
70
60
160
−
0.015
−
−
0.01
−
−
−
−
−
−
−
−
−
−
−
−
−
%
°C
%
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NCP2993
TYPICAL CHARACTERISTICS
1
1
THD+N (%)
0.01
THD+N (%)
0.1
THD+N
V
P
= 2.5 V
P
out
= 100 mW
R
L
= 8
W
0.1
THD+N
V
P
= 3 V
P
out
= 250 mW
R
L
= 8
W
0.01
0.001
10
100
1,000
FREQUENCY (Hz)
10,000
100,000
0.001
10
100
1,000
FREQUENCY (Hz)
10,000
100,000
Figure 3. THD+N vs. Frequency,
Single−Ended Input
1
THD+N
V
P
= 5 V
P
out
= 250 mW
R
L
= 8
W
THD+N (%)
1
Figure 4. THD+N vs. Frequency,
Single−Ended Input
THD+N
V
P
= 2.5 V
P
out
= 100 mW
R
L
= 4
W
THD+N (%)
0.1
0.1
0.01
0.01
0.001
10
100
1,000
FREQUENCY (Hz)
10,000
100,000
0.001
10
100
1,000
FREQUENCY (Hz)
10,000
100,000
Figure 5. THD+N vs. Frequency,
Single−Ended Input
1
THD+N
V
P
= 3 V
P
out
= 250 mW
R
L
= 4
W
THD+N (%)
1
Figure 6. THD+N vs. Frequency,
Single−Ended Input
THD+N
V
P
= 5 V
P
out
= 500 mW
R
L
= 4
W
THD+N (%)
0.1
0.1
0.01
0.01
0.001
10
100
1,000
FREQUENCY (Hz)
10,000
100,000
0.001
10
100
1,000
FREQUENCY (Hz)
10,000
100,000
Figure 7. THD+N vs. Frequency,
Single−Ended Input
Figure 8. THD+N vs. Frequency,
Single−Ended Input
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