LM4817MH National Semiconductor, LM4817MH Datasheet - Page 11

• Manufacturer Part Number: LM4817MH
• Manufacturer: National Semiconductor

Specifications of LM4817MH

• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Output Power (typ): 1.1x2@8OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.13@8Ohm@1W%
• Single Supply Voltage (typ): 5V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 67dB
• Single Supply Voltage (min): 3V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 28
• Package Type: TSSOP EP
• Lead Free Status / Rohs Status: Not Compliant

LDO Typical Performance Characteristics
C
External Components Description
Components
(Refer to Figure 1 ).
1.
2.
3.
4.
5.
6.
7.
OUT
= 2.2µF, C
C
C
R
R
R
R
C
B
s
1
2
i
i
f
CC
The Inverting input resistance, along with R
filter with f
The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. C
highpass filter with f
COMPONENTS, for an explanation of determining the value of C
The feedback resistance, along with R
The supply bypass capacitor. Refer to the POWER SUPPLY BYPASSING section for information about
properly placing, and selecting the value of, this capacitor.
The capacitor, C
PROPER EXTERNAL COMPONENTS section for information concerning proper placement and selecting
C
Combined with R
Combined with R
= 33nF, T
Power-Up Response
B
R
R
’s value.
1
2
= R
= (1.25V x R
2
J
c
((V
= 25˚C, V
= 1/(2πR
OUT
B
2
1
, filters the half-supply voltage present on the BYPASS pin. Refer to the SELECTING
, sets the LDO’s output voltage according to the following equation:
, sets the LDO’s output voltage according to the following equation:
/ 1.25V) -1)
1
) / (V
c
i
C
SHDN
= 1/(2πR
i
).
OUT
200781B4
= V
- 1.25V)
i
IN
C
i
. (Continued)
). Refer to the section, SELECTING PROPER EXTERNAL
i
, set the closed-loop gain.
Functional Description
11
f
, set the closed-loop gain. R
Unless otherwise specified, V
Power-Down Response
i
.
i
, along with C
IN
i
= V
, along with R
i
OUT
, form a high pass
+ 0.5V, C
200781B5
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i
, create a
IN
=