NLMD5820 Datasheet, PDF (1/21 Pages) ON Semiconductor – 2.65 W Filterless Class-D Audio Amplifier with Integrated Dual SPST Switch

NLMD5820
2.65 W Filterless Class-D
Audio Amplifier with
Integrated Dual SPST Switch
The NLMD5820 is an integrated mono Class-D audio power
amplifier and dual SPST switch capable of delivering 2.65 W of
continuous average power to 4.0 W from a 5.0 V supply in a Bridge
Tied Load (BTL) configuration. Under the same conditions, the output
power stage can provide 1.4 W to a 8.0 W BTL load with less than 1%
THD+N. For cellular handsets or PDAs it offers space and cost
savings because no output filter is required when using inductive
tranducers. The NLMD5820 incorporates a dual SPST switch which
allows signals to bypass the amplifier. The integrated switch operates
off a separate supply voltage and maintains a very low R_ON resistance,
0.5 W max @ 2.8 V V_CC.
The NLMD5820 processes analog inputs with a pulse width
modulation technique that lowers output noise and THD when
compared to a conventional sigma-delta modulator. The device allows
independent gain while summing signals from various audio sources.
Thus, in cellular handsets, the earpiece, the loudspeaker and even the
melody ringer can be driven with a single NLMD5820. Due to its low
42 mV noise floor, A-weighted, clean listening is guaranteed no matter
the load sensitivity.
Features
•ăOptimized PWM Output Stage: Filterless Capability
•ăEfficiency up to 90%
Low 2.5 mA Typical Quiescent Current
•ăLarge Output Power Capability: 1.4 W with 8.0 W Load (CSP) and
THD + N < 1%
•ăDual SPST with 0.5 W Max R_ON @ V_CC = 2.8 V
•ăHigh Performance, THD+N of 0.03% @ V_p = 5.0 V,
R_L = 8.0 W, P_out = 100 mW
•ăExcellent PSRR (-65 dB): No Need for Voltage Regulation
•ăSurface Mounted Package UDFN16
•ăFully Differential Design. Eliminates Two Input Coupling Capacitors
•ăVery Fast Turn On/Off Times with Advanced Rising and Falling
Gain Technique
•ăExternal Gain Configuration Capability
•ăInternally Generated 250 kHz Switching Frequency
•ăShort Circuit Protection Circuitry
•ă“Pop and Click” Noise Protection Circuitry
•ăThis is a Pb-Free Device
Applications
•ăCellular Phone
•ăPortable Electronic Devices
•ăPDAs and Smart Phones
http://onsemi.com
MARKING
DIAGRAM
16
1
16 PIN UDFN
CASE 517AL
A2A M
G
1
A2A = Specific Device Code
M = Date Code/Assembly Location
G = Pb-Free Package
PIN CONNECTIONS
NC2 1
IN2 2
COM2 3
V_CC 4
SD 5
VP 6
INP 7
INM 8
16 GND
15 NC1
14 IN1
13 COM1
12 OUTM
11 GND
10 VP
9 OUTP
(Top View)
ORDERING INFORMATION
Device
Package
Shipping^†
NLMD5820MUTAG 16 PIN 3000/Tape & Reel
UDFN
(Pb-Free)
For
information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
©Ă Semiconductor Components Industries, LLC, 2007
1
September, 2007 - Rev. 0
Publication Order Number:
NLMD5820/D