AN34042A データシートの表示（PDF） - Panasonic Corporation
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AN34042A Datasheet PDF : 24 Pages
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4-5 DC-DC Converter ICs
¢ Overview
This product series can be used to boost power supply efficiency in the high-current range of up to 10 A, lowering the power consumption
of host devices. It also facilitates more compact designs by implementing a high-performance power supply in a small footprint.
¢ Product Information
Input voltage
Absolute maximum rating
Output voltage
Output current
Step-down DC-DC
Power transistors
On- High-side
resistance Low-side
Control method
Oscillation frequency
Rectification method
Protective functionality
Package
High current, medium breakdown voltage DC-DC series
High current, low breakdown voltage DC-DC series
NN30310A
NN30311A
NN30312A
NN30194A
NN30195A
NN30196A
4.5 V to 30 V
4.5 V to 5.6 V
33 V
6V
0.75 V to 5.5 V
0.6 V to 3.5 V
3A
6A
10 A
3A
6A
9A
1ch
1ch
2 built-in low-on-resistance trench MOS FETs
25 m Ω
25 m Ω
9 mΩ
25 m Ω
25 m Ω
9 mΩ
25 m Ω
9 mΩ
9 mΩ
25 m Ω
25 m Ω
9 mΩ
Step-down hysteretic control
Step-down hysteretic control
0.25 M/0.75 M/1.25 MHz
0.5 M/1 M/2 MHz
Synchronous rectification
Undervoltage, overheat, overvoltage, over-current, short
HQFN24-A3-0404
HQFN40-A3-0606
HQFN24-A3-0404
HQFN40-A3-0606
¢ Applications
Power supply unit
IPD
Main signal processing board
For standby microcomputer
PFC
Control
IC
DCDC for I/O
12V⇒3.3V
DCDC for Core
12V⇒1.2V
SoC
Standby
Peaks, etc. microcomputer
DCDC for Memory
12V⇒1.8V
DCDC for USB
12V⇒5V
Memory
USB
¢ Image Sample
HQFN24-A3-0404 HQFN40-A3-0606
¢ Points on Appeal (Features)
• Built-in low-on-resistance trench MOS FETs provide high
efficiency, reducing host device power consumption and heat
dissipation.
• This product series can be used to implement a high-speed-
response DC-DC converter. The large safety margin provided
for the operating supply voltage range contributes to the
safety of the host device.
• Having fewer mounted components contributes to space-
saving set designs, helping to reduce the size of host devices.
4-6 DTV System Power Supply
¢ Overview
System power supply IC equipped with multi-channel LDO.
In addition to LDO, various other functions useful for DTV are also provided, contributing to the rationalization of DTV
design.
¢ Product Information
Part No.
LDO Output Voltage
5V
Built-in 3.3 V 3.3 V /
Voltage
9V backup
1.8 V 1.2 V Detection
function switchable
CPU
Reset
Analog
Mute
PWM
Signal
Detection
5 V → 3.3 V
Level Shifter
Panel Driver
Detection Detection
Package
AN34042A
(1 ch)
SSOP032-
P-0300B
AN34043A
(2 ch)
SSOP032-
P-0300B
AN34044A
(With 1 ch buffer)
SSOP032-
P-0300B
¢ Applications
12 V
9V
Panel
LDO
5V
LDO
1.2 V
Panel
5V
SD
3.3 V / 1.8 V
LDO
LDO
3.3 V
Microcomputer
TV system power supply
¢ Image Sample
SSOP032-P-0300B
¢ Points on Appeal (Features)
• Contributes to reducing space required for power
supply
• Equipped with various functions for DTV
• Internal protection functions
8
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