December 1999 TOKO, Inc.
Page 1
TK10415
36 k
36 k
VCC
VCC
+
-
+
-
A2
A1
20 k
20 k
APPLICATIONS
s
Speaker Driver for Portable Equipment
s
Headphone Driver
s
Toys and Games
VCC
VOUT 1
Vref/Standby
GND
VOUT 2
VIN
TK10415
CERAMIC SPEAKER DRIVE AMPLIFIER
FEATURES
s
Wide Operating Voltage Range (V
CC
= 1.8 to 5.5 V)
s
Very Low Supply Current (I
CC
= 1.8 mA @ V
CC
= 2.4 V)
s
Very Low Standby Current (I
STBY
= 0.1
A)
s
Miniature Package (SOT23L-6)
s
Very Large Output Voltage (V
OUT(MAX)
= 1.7 Vrms @
V
CC
= 2.4 V, R
L
= 620
)
s
Very Small Total Harmonic Distortion (THD = 0.1 %
@ V
OUT
= 0.8 Vrms)
s
Needs No Output Coupling Capacitor
BLOCK DIAGRAM
ORDERING INFORMATION
TAPE/REEL CODE
TL: Tape Left
Tape/Reel Code
TK10415M
DESCRIPTION
The TK10415M is a very low operating voltage and current
audio power amplifier to drive ceramic speakers.
The TK10415M drives the speaker directly, because the
device has a differential output that does not need an
output coupling capacitor.
The voltage gain is adjustable by two external resistors.
The TK10415M is available in the very small SOT23L-6
surface mount package.
The small package in conjunction with few external
components saves printed circuit board space.
Page 2
December 1999 TOKO, Inc.
TK10415
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6
Supply Voltage ........................................................... 6 V
Operating Voltage ......................................... 1.8 to 5.5 V
Power Dissipation (Notes 1 and 2) ..................... 400 mW
ABSOLUTE MAXIMUM RATINGS
TK10415 ELECTRICAL CHARACTERISTICS
Test Conditions: V
CC
=
2.4 V, f = 1.0 kHz, R
L
= 620
, T
A
= 25
C, unless otherwise specified.
Note 1: Power dissipation is 400 mW in free air. Derate at 3.2 mW/
C for operation above 25
C.
Note 2: Power dissipation is 600 mW when mounted. Derate at 4.8 mW/
C for operation above 25
C.
Storage Temperature Range ................... -55 to +150
C
Operating Temperature Range ................... -20 to +70
C
December 1999 TOKO, Inc.
Page 3
TK10415
VCC
Cref = 33 F
0.022 F
0.022 F
VCC
33 F
+
+
100 k
10 k
1 F
+
RL
VIN
TEST CIRCUIT
TYPICAL PERFORMANCE CHARACTERISTICS
V
CC
= 5 V, T
A
= 25
C, unless otherwise specified.
I CC
(mA) / V
ref
(V)
1.5
3
SUPPLY CURRENT and REFERENCE
VOLTAGE vs. SUPPLY VOLTAGE
VCC (V)
0
1 2 3 4 5 6
2
1
0.5
2.5
V
ref
I
CC
V
OUT
(V
rms
)
/
THD
(%)
10
OUTPUT VOLTAGE AND
DISTORTION vs. FREQUENCY
fIN (kHz)
0.01
0.01 0.1 1 10 100
1
0.1
V
OUT
THD
V
IN
= 40 mVrms, R
L
= 620
V
OUT
(V
rms
)
/
THD
(%)
10
OUTPUT VOLTAGE AND
DISTORTION vs. INPUT VOLTAGE 1
VIN (mVrms)
0.01
1 10 100 1000
1
0.1
fIN = 1 kHz, RL = 2 k
VOUT
VCC = 5 V
THD
VCC = 5.0 V
VCC = 2.4 V
V
OUT
(Vrms) / THD (%)
10
OUTPUT VOLTAGE AND
DISTORTION vs. INPUT VOLTAGE 2
VIN (mVrms)
0.01
1 10 100 1000
1
0.1
fIN = 1 kHz, RL = 620
VOUT
VCC = 5 V
THD
VCC = 5.0 V
VCC = 2.4 V
Page 4
December 1999 TOKO, Inc.
TK10415
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
V
CC
= 5 V, T
A
= 25
C, unless otherwise specified.
V
OUT
(Vrms) / THD (%)
10
OUTPUT VOLTAGE AND
DISTORTION vs. INPUT VOLTAGE 3
VIN (mVrms)
0.01
1 10 100 1000
1
0.1
fIN = 1 kHz, RL = 100
VOUT
VCC = 5 V
THD
VCC = 5.0 V
VCC = 2.4 V
V
OUT
(Vrms)
5
MAXIMUM OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE
VCC (V)
0
1 2 3 4 5 6 7
3
2
1
4
THD = 1%
THD = 10%
RL = 620
V
OUT
(Vrms)
2.5
MAXIMUM OUTPUT VOLTAGE vs.
LOAD RESISTANCE 1
RL (k
)
0
1 2 3 4 5 6 7
1.5
1
0.5
2
THD = 1%
THD = 10%
VCC = 2.4 V
fIN = 1 kHz
V
OUT
(Vrms)
5
MAXIMUM OUTPUT VOLTAGE vs.
LOAD RESISTANCE 2
RL (k
)
1
1 2 3 4 5 6 7
3
2
4
THD = 1%
THD = 10%
VCC = 5.0 V
fIN = 1 kHz
I CONT
(
A)
60
160
CONTROL CURRENT vs.
SUPPLY VOLTAGE
VCC (V)
0
1 2.5 3 3.5 4 4.5 5 5.5
80
40
20
100
120
140
I CC
(
m
A)
0.8
2
SUPPLY CURRENT vs.
REFERENCE VOLTAGE
Vref /Standby (V)
0
1 1.2 1.4 1.6 1.8 2 2.2 2.4
1
0.6
0.2
1.2
1.4
1.6
0.4
1.8
December 1999 TOKO, Inc.
Page 5
TK10415
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20 k
VCC
20 k
VCC
VCC
36 k
36 k
VCC
Vref
PIN FUNCTION DESCRIPTIONS
Page 6
December 1999 TOKO, Inc.
TK10415
NOTES
December 1999 TOKO, Inc.
Page 7
TK10415
NOTES
Page 8
December 1999 TOKO, Inc.
TK10415
0.95
0.95
0.32
e
e
M
0.1
(3.4)
1.2
0.15
0.3
3.3
2.2
0.4
0.95
0.95
3.0
e
e
e1
0.6
1.0
Recommended Mount Pad
1
2
3
4
5
6
0 - 0.1
0.4
M
0.1
15
max
1.4 max
Marking
+0.15
- 0.05
+0.15
- 0.05
+ 0.3
Dimensions are shown in millimeters
Tolerance: x.x =
0.2 mm (unless otherwise specified)
Voltage Code
Product Code
5 PL
3.5
+0.3
- 0.1
+0.15
- 0.05
Marking Information
Marking
TK10415
415
SOT-23L-6(a) (SOT-23L)
PACKAGE OUTLINE
Printed in the USA
1999 Toko, Inc.
All Rights Reserved
TOKO AMERICA REGIONAL OFFICES
Toko America, Inc. Headquarters
1250 Feehanville Drive, Mount Prospect, Illinois 60056
Tel: (847) 297-0070 Fax: (847) 699-7864
Western Regional Office
Toko America, Inc.
2480 North First Street , Suite 260
San Jose, CA 95131
Tel: (408) 432-8281
Fax: (408) 943-9790
Midwest Regional Office
Toko America, Inc.
1250 Feehanville Drive
Mount Prospect, IL 60056
Tel: (847) 297-0070
Fax: (847) 699-7864
Eastern Regional Office
Toko America, Inc.
107 Mill Plain Road
Danbury, CT 06811
Tel: (203) 748-6871
Fax: (203) 797-1223
IC-231-TK11031
0798O0.0K
Visit our Internet site at http://www.tokoam.com
Semiconductor Technical Support
Toko Design Center
4755 Forge Road
Colorado Springs, CO 80907
Tel: (719) 528-2200
Fax: (719) 528-2375
The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its
products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of
third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc.
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