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Here we introduce examples of ICs used for cell phones implemented as modules using Integrated System in Board.
These products combine a step-up DC/DC converter, n-channel power MOSFET, and Schottky barrier diode devices
in a single module. A switching step-up power supply can easily be implemented with just the addition of external
voltage setting resistor, coil, and capacitor components.
8 9
Module technologies that achieve high-density and thinner form factors
Integrated System in Board Application
Products (Standard Products)
Integrated System in Board Application
Products (Standard Products)
Top surface
Back surface
3.4 × 3.4 × 0.65 mm
3
Mounting area
reduced by 35%
Earlier mounting
Integrated System in Board
Integrated System in Board
Di
TR
GND
CE
EXT
IC
VDD
FB
■ Block Diagram (SR10010)
■ Block Diagram
■
Compared to discrete components with Integrated System in Board
Type No. Type
Size Status
SR10010 1ch Step-up type 180 kHz 20 V ES samples/MP support
SR10020 300 kHz 20 V ES samples/MP support
SR10030 180 kHz 30 V 3.4 × 3.4 × 0.65 mm
3
ES samples/MP support
SR10110 100 kHz 20 V In volume production
SR10210 100 kHz 20 V In volume production
SR103XX -------- -------- -------- Under development
SR20010 2ch 180 kHz 20 V 5.0 × 5.0 × 0.65 mm
3
ES samples/MP support
Number of
channels
Oscillator
frequency
Withstand
voltage
Step-down
type
– power
supply type
■ Product lineup
2002
2004
Charge control circuit
10.0 × 10.0 = 100.0 mm
2
+
Regurator IC
3.0 × 3.0 = 9.0 mm
2
ISB-E17-0
4.4 5 × 4.45 = 19.80 mm
2
Mounting area
reduced by 80%
Size: 109.0 mm
2
→ 19.80 mm
2
Thin Form, Miniature 1 or 2 Channel DC/DC Converter Power Supplies
SR Series
Earlier mounted
Integrated system in Board
NTSC/PAL encoder+Video driver+Audio codec+Speaker amplifier
LC822964
■Video Block
●One output system
Low-cost version specialized for cell phones
●Supports a wide variety of input data (ITU-R601/SQ)
●No output coupling capacitors required
●High performance
- Switching noise does not appear on the screen due to
the use of charge pump technology
- Voltage sag does not occur
●Built-in 6th order low-pass filter: fc = 7.5 MHz
●Standby mode power consumption: 0 µA
■Audio Block
●D/A converter signal-to-noise ratio: 98 dB (A
weighting), THD: 84 dB at 48 kHz
●A/D converter signal-to-noise ratio: 90 dB (A
weighting), THD: 80 dB at 48 kHz
●Programmable ALC/noise gate
●Stereo/monaural microphone interface
●Built-in headphone driver
●Low power consumption
●450 mW output (Vcc = 3.6 V, 1 kHz, THD = 1%)
●Power saving and standby functions
Featuring
Speaker
amplifier
Microphone
amplifier
Speaker amplifier
LA74220C
Audio Codec
ALC
ADC
DAC
Volume
Heaphone
amplifier
Audio I/O block
I
2
S
75 Ω Video Driver
LA73074C
NTSC/PAL Encoder LC822962
Timing
Generator
IIC I/F
ITU-R601/SQ
I/F
NTSC/PAL
Video Encoder
TV output block
CCIR601
Composit
video output
Current mounting area
84.88 mm
2
+
Passive components
Integrated System in Board
45 mm
2
(6.0×7.5 mm
2
)
Sound I/O + TV output
NTSC/PAL encoder
5.0×5.0×1.0 mm
3
Video driver
2.8×2.8×0.8 mm
3
TV Output Block
Sound I/O Block
Audio codec
5.2×5.2×0.8 mm
3
Speaker amplifier
5.0×5.0×0.8 mm
3
Mounting area
can be
reduced by
over 50%
New
product
SANYO Original technology