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LM4961LQBD データシート(PDF) 2 Page - Texas Instruments

部品番号 LM4961LQBD
部品情報  Ceramic Speaker Driver
Download  23 Pages
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

LM4961LQBD データシート(HTML) 2 Page - Texas Instruments

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background image
Shutdown 1
GND
12
6
GND
7
11
4
SW
VDD
L1
10 PH
FB
8
470 pF
13k
SW-Out
1
68k
Shutdown 1
Band-SW
19
Band-SW
Shutdown 2
3
Shutdown 2
4.7 PF
SW GND
28
4.7 PF
VI
26
4.7 PF
GND
24
1.0 PF
Bypass
2
15
VO2
27
15
VO1
23
2 PF
Ceramic
20k
Cchg
17
VIN
18
0.1 PF
Audio In
20k
200k
82 pF
BW2
BW1
21
20
VDD
VI = VFB(1 + R2/(R3 + 170))**
Load
CO
R2
D1
CF
R3
CS1
CBYPASS
Ci
Ri
CF1
RF2
RF1
CS2
*Rc
1k
LM4961, LM4961LQBD
SNAS242J – AUGUST 2004 – REVISED MARCH 2007
www.ti.com
Typical Application
* RC is needed for over/under voltage protection. If inputs are less than VDD +0.3V and greater than –0.3V, and if
inputs are disabled when in shutdown mode, then RC can be shorted.
** VFB = 1.23V
Figure 2. Typical Audio Amplifier Application Circuit
Shutdown 1
Shutdown 2
Band-SW
Receiver Mode (BW2)
high
low
Ringer Mode (BW1)
high
high
high
Shutdown
low
low
low
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
2
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Copyright © 2004–2007, Texas Instruments Incorporated
Product Folder Links: LM4961 LM4961LQBD


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