Set Top Box Platform Solutions

Product Selector Guide
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Set Top Box Platform Solutions
Semtech offers Power and Protection front end solutions for your designs
Today’s consumers are demanding more feature
rich content in their entertainment systems. The
Set Top Box is key to providing the gateway for
feature enabled information and entertainment.
To address the design needs of the Set Top Box
and enable faster time to market, Semtech
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provides leading-edge silicon solutions for the
Set Top Box platform. From a wide array of power
management products to ESD protection, Semtech
offers a full range of semiconductor solutions and
systems intelligence to enable design engineers to
develop world class Set Top Box platforms.
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Set Top Box Block Diagram
: Semtech Product Offering
W W W .SE MTE C H .C OM
Set Top Box Product Selector Guide
PROTECT IT.
RClamp0524P for HDMI 1.3
RClamp0524P
HDMI Connector
To HDMI
Graphics Chip
Clk+
Clk-
GND
RClamp0524P
6
1
1
2
GND
3
4
2
4
5
6
CEC
SCL
SDA
Gnd
5V Power
HP Detect
1
7
GND
8
GND
Data 0+
Data 0-
GND
9
Data 1+
Data 11
10
GND
Key Features:
• Typical capacitance 0.3pF (Line-to-Line)
• No impedance compensation necessary
• 0.5mm pitch between the signal pairs
• Protects 2 high-speed differential line pairs
• ESD Protection to IEC 61000-4-2
• Flow-through package
1
Data 2+
Data 2-
RClamp0504P
3,8
5
RClamp0524P package
RClamp0524P
PROTECT IT.
Protection Products - Selector Guide
ESD Rating
Air
Contact
Typ. Cap
(I/O to I/O)
Ipp @
8/20µs
Pkg Size
(mm)
Interface
4
±17kV
±12kV
0.3pF
5A
2.5 x 1.0 x 0.6
HDMI, DVI, eSATA
5V
2
±17kV
±12kV
0.3pF
5A
1.6 x 1.0 x 0.6
HDMI, DVI, eSATA
RClamp0504N
5V
4
±15kV
±8kV
1.5pF
12A
2.0 x 2.0 x 0.6
USB, Ethernet
RClamp0502N
5V
2
±15kV
±8kV
0.3pF
5A
1.2 x 1.0 x 0.6
USB, Video
RClamp0502B
5V
2
±15kV
±8kV
0.6pF
5A
1.6 x 1.6 x 0.75
USB, Video
RClamp2504N
2.5V
4
±25kV
±15kV
2.0pF
25A
2.6 x 2.6 x 0.6
Ethernet
RClamp3304N
3.3V
4
±25kV
±15kV
2.0pF
25A
2.6 x 2.6 x 0.6
Ethernet
RClamp3304P
3.3V
4
±20kV
±12kV
0.4pF
5A
1.6 x 1.6 x 0.6
Ethernet
RClamp0504P
5V
4
±15kV
±8kV
0.8pF
5A
1.6 x 1.6 x 0.6
Ethernet, USB
µClamp1211P
12V
1
±15kV
±8kV
25pF
5A
1.0 x 0.6 x 0.5
RS-232, Serial data
µClamp0506P
5V
6
±20kV
±12kV
30pF
5A
1.6 x 1.6 x 0.6
Audio Ports, Keypad
Part Number
VRWM
Lines
RClamp0524P
5V
RClamp0522P
W W W .SE MTE C H .C OM
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Set Top Box Product Selector Guide
POWER IT.
SC4624A – 4A synchronous Step-down Switching Regulator
C11
Vout
L1
PVIN
R5
SYNC/EN
R6
C9
PH
R8
FB
VCC
C3
R1
SC4624
SS
ISET
FS
C7
5
Enable
C3
8
C1
SS
GND
VOUT
6
FB
R1
COMP
4
C6
L1
3
SW
SC4521
EN
L2
D1
BST
IN
R9
C1
COMP
C5 R3 R11
2
C4
C2
1
VIN
C8
R7
PGOOD
R2
POWER IT.
SC4521 – 2.5A Asynchronous Step-down Switching Regulator
Key Features:
• Input voltage range: 4.4V to 24V
• Adjustable output voltage as low as 0.8V
• 2.5A output current
• 600kHz oscillator frequency
• Programmable Soft-start
• Independent enable pin
R4
Vin
PGND
Key Features:
• Input voltage range: 2.3V to 5.5V
• Adjustable output: 0.5V to Vin
• 4A of continuous output current
• Programmable frequency: 200kHz – 2MHz
• Shutdown current: <1µA
• External synchronization
• Independent sync and enable pins
• Programmable Soft-start
AGND
7
C2
D2
R2
C4
R3
POWER IT.
SC4524A/SC4524B – 2A Asynchronous Step-down Switching Regulators
Key Features:
• Input voltage range:
SC4524A: 3.0V – 30V
SC4524B: 3.0V – 16V
• Wide output voltage range: 1.0V – 0.80*Vin
• 2A output current
• Oscillator frequency: 200kHz – 2MHz
• Programmable Soft-start
• Efficiency:
SC4524A: Peak efficiency up to 86%
SC4524B: Peak efficiency up to 90%
• Hiccup mode & pulse-by-pulse current limit protection
V
IN
D1
10V – 28V
C4
2.2F
1N4148
C1
0.1F
L1
BST
IN
SW
8.2H
SC4524A
SS/EN
OUT
R4
42.2k
5V/2A
FB
COMP
C7
10nF
C8
10pF
ROSC
R7
28.0k
GND
R5
18.2k
D2
20BQ030
R6
10.5k
C2
22F
C5
2.2nF
W W W .SE MTE C H .C OM
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Set Top Box Product Selector Guide
POWER IT.
SC2620 – 2A Asynchronous Dual Step-down Switching Regulator
Key Features:
• Input voltage range: 2.8V to 30V
• Wide output voltage range: 1V - 0.90*Vin
• 2A output current
• Up to 1400kHz/Channel programmable switching frequency
• Current mode control
• Power Good indicator
• Out-of-Phase switching for reduced input voltage ripple
• Cycle-by-Cycle current-limiting
• Independent shutdown/Soft-start pin
C5
R5
12.7k C6 1.5nF
D3
FB1
COMP1 BOOST1
C7 47pF
C2
1N4148
0.1µF
L1
SS1
22nF
R9
46.4k
SW1
9V-16V VIN
ROSC
SC2620
PGOOD1
C15
C1
22µF
R10 10µF
10
SS2
VIN
22nF
C16
0.1µF
C9
COMP2
R7 33pF C8
D2
UPS120
SW2
D4
1N4148
4.7nF
FB2
C4
0.1µF
3.3V/2A
R1
30.1k
PVIN
C10
10.5k
OUT1
10µH
D1
UPS120
R2
13k
L2
OUT2
6.8µH
C3
22µF
BOOST2
GND
R3 1.2V/2A
2.61k
R4
13k
POWER IT.
Power Management Products - Selector Guide
Part Number
Type
SC196
SC339
VIN (V)
VOUT (V)
IOUT
Max (A)
Isw
Min (A)
(Typical)
Shutdown fsw (kHz)
Current (µA)
Package
Min Max Min
Max
Single Buck Regulator
2.5
5.5
0.8
~VIN
1.5
1.96
0.1
1000
MLPD-10, 3x3x0.6mm
LDO Controller
4.5
5.5
0.5
3.3
0.02
N/A
0.1
N/A
SOT23-6
2.8
20
1
0.8* VIN
1.7/1.7
2.0/2.0
38
250-2500
TSSOP-16 EDP
2.8
30
1
0.9* VIN
2/2
2.3/2.3
40
100-1400
SO-16 EDP
1.4
5.5
0.5
VIN-VDROPOUT
1
N/A
<10
N/A
SO-8 EDP
SC4215A
1.4
5.5
0.5
VIN-VDROPOUT
2
N/A
<10
N/A
SO-8 EDP
SC4521
4.4
24
0.8
0.85* VIN
2.5
3.5
250
600
SO-8 EDP
1.0
0.80* VIN
2
<45
200-2000
SO-8 EDP
SC2440
SC2620
Dual Buck Regulator
SC4211
LDO
SC4524A
SC4524B
3.0
Single Buck Regulator
30
16
18 (Vin=5V)
33 (Vin=12V)
SC4620
2.3
5.5
0.5
~VIN
2.5
1.9
0.2
100-600
MLPQ-20, 4x4mm
SC4624A
2.3
5.5
0.5
~VIN
4
<1.9
0.2
200-2000
MLPQ-20, 4x4mm,
SO-16 EDP (SC4624)
2.8
5.5
5.0
0.03
N/A
0.1
800
MLPD-UT-8, 2x2mm
SC4538
Single Boost Regulator
SC4539
40
25
W W W .SE MTE C H .C OM
SETOPBX-SG-1107
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