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MP1740EC-LF-P

P1-P3P4-P6P7-P9P10-P11
MP1740
3W HIGH EFFICIENCY
MONO CLASS-D AUDIO AMPLIFIER
MP1740 Rev. 1.0 www.MonolithicPower.com 1
1/5/2012 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved
The Future of Analog IC Technology
DESCRIPTION
The MP1740 is a high efficiency Class-D H-
bridge audio amplifier. It utilizes a full bridge
output structure capable of delivering 3W into
4 speaker. The device exhibits the high fidelity
of a class AB amplifier with an efficiency of 91%.
It also dramatically reduces solution size by
integrating the following:
z 300m (high side or low side) power MOSFETs
(VCC=3.6V)
z Startup / Shutdown pop elimination
z Short circuit protection
z 9 Balls Wafer chip scale package (WLCSP) and
requires a few external components.
This amplifier also improves GSM power supply
rejection, and operates on a single cellular Li-
ion battery.
The gain of this amplifier can be controlled
easily by a few modification of external
configuration while minimizing noise to 37
VRMS.
FEATURES
• 3W Into 4 with 5 V Supply @ 10% THD+N
• Efficiency up to 90% at 1.7W Pout, 8 ohm
load
• 2.5V to 5.5V Supply Voltage Operation
• THD+N = 0.1% @ 1.8W, 5V, 4
• 2mA Quiescent current and 0.5A
shutdown current
• Full Bridge Output Drive
• Internal 250kHZ Switching frequency
• Fully Differential input
• Improved CMRR Eliminates Two Input
Coupling Capacitors
• 1ms start-up time Eliminates pop
• Integrated Short Circuit Protection
• Integrated Thermal Shutdown
• 9 Balls Wafer chip scale package (WLCSP)
APPLICATIONS
• Wireless or Cellular Handsets
• PDAs
All MPS parts are lead-free and adhere to the RoHS directive. For MPS
green status, please visit MPS website under Products, Quality
Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered
trademarks of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP1740
EN
AVCC
AGND
INN
INP
VON
PGND
PVCC
VOP
R
I
R
I
IN
+
IN
-
OUT
-
OUT
+
EN
To Battery
Cs
TND+N vs. P
OUT
fs=1kHz, V
CC
=5V,
Gain=2V/V
No Weighting
THD+N (%)
P
OUT
(W)
0.01
20
0.02
0.05
0.1
0.2
0.5
1
2
5
10
60m 4100m 200m 300m 500m 1 2 3
MP1740 –3W HIGH EFFCIENCY MONO CLASS-D AUDIO AMPLIFIER
MP1740 Rev. 1.0 www.MonolithicPower.com 2
1/5/2012 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved
ORDERING INFORMATION
Part Number* Package Top Marking Free Air Temperature (T
A
)
MP1740EC
WLCSP
6F
–20°C to +85°C
PACKAGE REFERENCE
TOP VIEW
VONAGNDINP
PGND
PVCC
AVCC
VOPENINN
321
C
B
A
BOTTOM VIEW
321
A
B
C
VONAGNDINP
PGNDPVCCAVCC
VOPENINN
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage V
CC
........................-0.3V to 6.5V
Input Voltage V
IN
................. –0.3V to V
CC
+ 0.3V
Input Voltage V
EN
................ –0.3V to V
CC
+ 0.3V
Ambient Temperature T
A
.......... –40°C to +85°C
Continuous Power Dissipation (T
A
= +25°C)
(2)
................................................................ 1W
Junction Temperature T
J
......... –40°C to +140°C
Lead Temperature ....................................260°C
Storage Temperature.............. –65°C to +150°C
Recommended Operating Conditions
(3)
Supply Voltage V
CC
.........................2.5V to 5.5V
Enable Voltage V
EN
..................... 70%V
CC
to V
CC
Disable Voltage V
EN
..................... 0V to 15%V
CC
Common Mode Input Voltage V
IC
............................... 0.5V to VCC-0.8V
Operating Junct. Temp (T
J
)..... –20°C to +125°C
Thermal Resistance
(4)
θ
JA
θ
JC
WLCSP ..................................114 ..... 12... °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature T
J(MAX)
, the junction-to-ambient
thermal resistance
JA
, and the ambient temperature T
A
. The
maximum allowable continuous power dissipation at any
ambient temperature is calculated by PD
(MAX)
=(T
J(MAX)
-T
A
)/
JA
.
Exceeding the maximum allowable power dissipation will
cause excessive die temperature, and the regulator will go
into thermal shutdown. Internal thermal shutdown circuitry
protects the device from permanent damage.
3) VCC Include AVCC and PVCC, VIN include INP and INN
4) Measured on JESD51-7, 4-layer PCB
MP1740 –3W HIGH EFFCIENCY MONO CLASS-D AUDIO AMPLIFIER
MP1740 Rev. 1.0 www.MonolithicPower.com 3
1/5/2012 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved
ELECTRICAL CHARACTERISTICS
T
A
= +25°C, unless otherwise noted.
Parameter Symbol Conditions Min Typ Max Unit
Output Offset Voltage
|V
OS
|
VI=0V, Av=2V/V, VCC=2.5V to
5.5V
1 25 mV
Power Supply Rejection
Ratio
PSRR VCC=2.5V to 5.5V -70 -45 dB
Common Mode Rejection
Ratio
CMRR
VCC=2.5V to 5.5V,
VIC＝1/2VCC to 0.5V,
VIC＝1/2VCC to VCC -0.8V
-70 dB
High-level Input Current I
IH
VCC=5.5V,
VI=5.5V,RI=150k
20 30 A
Low-level Input Current I
IL
VCC=5.5V,
VI=0V,RI=150k
20 30 A
VCC=5.5V, no load, switching
2.7 5.8
VCC=3.6V, no load, switching
2 4.6
Quiescent Current I
Q
VCC=2.5V, no load, switching
1.6 3.6
mA
Shut down Current I
ds
VEN=0, VCC=2.5V to 5.5V 0.5 2 A
VEN Enable L-H VCC=2.5V to 5.5V 1.6 V
VEN Enable H-L VCC=2.5V to 5.5V 0.4 V
UVLO_H VCC from Low to High 2.4 2.48 V
UVLO_L VCC from High to Low 1.95 2.1 V
VCC=5.5V 250
VCC=3.6V 300
Static On-state Resistance Rds_on
VCC=2.5V 360
m
Output impedance in
disable
R
O
VEN<0.8V 2 k
Switching frequency F
SW
VCC=2.5V to 5.5V 200 250 300 kHz
GAIN (VO/VI) R
I
=15 k, no load 19 20 21 V/V
RPD Resistance from EN to GND 300 k
P1-P3P4-P6P7-P9P10-P11

MP1740EC-LF-P

Mfr. #:
Buy MP1740EC-LF-P
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Audio Amplifiers 3W Mono Class-D Audio Amplifier
Lifecycle:
New from this manufacturer.
Delivery:
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