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KBA2338

Features: `Unique Modulation Scheme Reduces EMI Emissions `Efficiency at 3.6V With an 8- Speaker: 88% at 400 mW 80% at 100 mW `Low 2.38-mA Quiescent Current and 0.5-A Shutdown Current `2.5V to 6.0V Wide Supply Voltage `Optimized PWM Output Stage Eliminates LC Output Filter` Improved PSRR (72 dB) E...

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SeekIC No. : 004384175 Detail

KBA2338: Features: `Unique Modulation Scheme Reduces EMI Emissions `Efficiency at 3.6V With an 8- Speaker: 88% at 400 mW 80% at 100 mW `Low 2.38-mA Quiescent Current and 0.5-A Shutdown Current `2.5V to 6.0V ...

KBA2338 Data Sheet

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Part Number:
KBA2338
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/21

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Product Details

Description



Features:

`Unique Modulation Scheme Reduces EMI Emissions 
`Efficiency at 3.6V With an 8- Speaker:   88% at 400 mW   80% at 100 mW 
`Low 2.38-mA Quiescent Current and  0.5-A Shutdown Current
`2.5V to 6.0V Wide Supply Voltage  
`Optimized PWM Output Stage Eliminates LC Output Filter 
` Improved PSRR (72 dB) Eliminates Need for a Voltage Regulator 
`Fully Differential Design Reduces RF Rectification and Eliminates Bypass Capacitor 
`Improved CMRR Eliminates Two Input Coupling Capacitors 
`Internally Generated 250-kHz Switching  Frequency
`Integrated Pop and Click Suppression Circuitry 
`1.5mm*1.5mm Wafer Chip Scale Package (WCSP)  and 3mm*3mm DFN-8 package 
`RoHS compliant and 100% lead(Pb)-free


Application

·Cellular Phone
·Portable Electronic Devices
·PDAs and Smart
·Phones Portable Computer


Pinout

Connection Diagram


Specifications

Symbol
Rating
Max
Unit
Vp
 Supply Voltage Active Mode
Shutdown Mode
6.0
7.0
V
Vin

Iout

Pd

TA

TJ

Tstg
 Input Voltage

Max Output Current (Note 1)

Power Dissipation (Note 2)

Operating Ambient Temperature

Max Junction Temperature

Storage Temperature Range
0.3 to VCC +0.3

1.5

Internally Limited

-40 to +85

150

-65 to +150
V

A

-






RJA
 Thermal Resistance JunctiontoAir9Pin FlipChip
UDFN8
90 (Note 3)
50
/W
-
-
 ESD Protection
Human Body Model (HBM) (Note 4)
Machine Model (MM) (Note 5)
> 2000
> 200
V
-
 Latchup Current @ TA = 85 (Note 6)9Pin FlipChip
UDFN8
±70
±100
mA
MSL
 Moisture Sensitivity (Note 7)
Level 1

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.The device is protected by a current breaker structure. See Current Breaker Circuit in the Description Information sectiofor more
information.
2.The thermal shutdown is set to 160 (typical) avoiding irreversible damage to the device due to power dissipation. is highly dependent of the PCB Heatsink area. For example, RJA  can equal 195/W with3.For the 9Pin FlipChip CSP package, the RJA total area and also 135/W with 500 mm2 . When using ground and power planes, the value is around 90/W, as specified in table.50 mm
4.Human Body Model: 100 pF discharged through a 1.5 k resistor following specification JESD22/A114. On 9Pin FlipChip, B2 Pin is qualified at 1500 V.
5.Machine Model: 200 pF discharged through all pins following specification JESD22/A115.
6.Latchup Testing per JEDEC Standard JESD78.
7.Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: JSTD020A.


Description

The  kB2338A is a high efficiency, 3W mono class-D audio power amplifier. A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, system cost, and simplifying design.

Operating in a single 5V supply, kB2338A is capable of driving 4 speaker load at a continuous average output of 3W/10% THD+N or 2W/1% THD+N. The kB2338A has high efficiency with speaker load compared to a typical class AB amplifier. With a 3.6V supply driving an 8 speaker , the efficiency for a 400mW power level is 88%. In cellular handsets, the earpiece, speaker phone, and melody ringer can each be driven by the kB2338A. The gain of kB2338A is externally configurable which allows independent gain control from multiple sources by summing signals from seperate sources.

The kB2338A is available in space-saving WCSP and DFN packages.




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