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BD9A600MUV 데이터시트 PDF




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부품번호 BD9A600MUV 기능
기능 Single Synchronous Buck DC/DC Converter
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BD9A600MUV 데이터시트, 핀배열, 회로
Datasheet
2.7V to 5.5V Input, 6A Integrated MOSFET
Single Synchronous Buck DC/DC Converter
BD9A600MUV
General Description
BD9A600MUV is a synchronous buck switching
regulator with built-in low on-resistance power MOSFETs.
It is capable of providing current up to 6A.The SLLMTM
control provides excellent efficiency characteristics in
light-load conditions which make the product ideal for
equipment and devices that demand minimal standby
power consumption. The oscillating frequency is high at
1MHz using a small value of inductance. It is a current
mode control DC/DC converter and features high-speed
transient response. Phase compensation can also be set
easily.
Key Specifications
Input Voltage Range
2.7V to 5.5V
Output Voltage Range
0.8V to VPVIN x 0.7V
Average Output Current
6A(Max)
Switching Frequency
1MHz(Typ)
High-Side MOSFET On-Resistance25m(Typ)
Low-Side MOSFET On-Resistance25m(Typ)
Standby Current
0μA(Typ)
Package
VQFN016V3030
W(Typ) x D(Typ) x H(Max)
3.00mm x 3.00mm x 1.00mm
Features
Synchronous Single DC/DC Converter.
SLLMTM (Simple Light Load Mode)Control.
Over Current Protection.
Short Circuit Protection.
Thermal Shutdown Protection.
Under Voltage Lockout Protection.
Adjustable Soft start Function.
Power Good Output.
VQFN016V3030 Package(Backside Heat
Dissipation)
Applications
Step-down Power Supply for DSPs,
FPGAs, Microprocessors, etc.
Laptop PCs/ Tablet PCs/ Servers.
LCD TVs.
Storage Devices (HDDs/SSDs).
Printers, OA Equipment.
Entertainment Devices.
Distributed Power Supply, Secondary Power
Supply.
VQFN016V3030
Typical Application Circuit
Figure 1. Application Circuit
Product structure : Silicon monolithic integrated circuit
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays
1/32
TSZ02201-0J3J0AJ00400-1-2
2014.07.10 Rev.001




BD9A600MUV pdf, 반도체, 판매, 대치품
BD9A600MUV
Datasheet
Description of Blocks
1. VREF
The VREF block generates the internal reference voltage.
2. UVLO
The UVLO block is for under voltage lockout protection. It will shut down the IC when the VIN falls to 2.45V (Typ) or lower.
The threshold voltage has a hysteresis of 100mV (Typ).
3. SCP
After the soft start is completed and when the feedback voltage of the output voltage has fallen below 0.4V (Typ) for
1msec (Typ), the SCP stops the operation for 16msec (Typ) and subsequently initiates restart.
4. OVP
Over voltage protection function (OVP) compares FB terminal voltage with the internal standard voltage VREF. When the
FB terminal voltage exceeds 0.88V (Typ) it turns MOSFET of output part MOSFET off. After output voltage drop it returns
with hysteresis.
5. TSD
The TSD block is for thermal protection. The thermal protection circuit shuts down the device when the internal
temperature of IC rises to 175C (Typ) or higher. Thermal protection circuit resets when the temperature falls. The circuit
has a hysteresis of 25°C (Typ).
6. SOFT START
The Soft Start circuit slows down the rise of output voltage during start-up and controls the current, which allows the
prevention of output voltage overshoot and inrush current. A built-in soft start function is provided and a soft start is
initiated in 1msec (Typ) when the SS terminal is open.
7. gm Amplifier
The gm Amplifier block compares the reference voltage with the feedback voltage of the output voltage. The error and
the ITH terminal voltage determine the switching duty. A soft start is applied at startup. The ITH terminal voltage is limited
by the internal slope voltage.
8. Current Comparator
The Current Comparator block compares the output ITH terminal voltage of the error amplifier and the slope block signal
to determine the switching duty. In the event of over current, the current that flows through the high-side MOSFET is
limited at each cycle of the switching frequency.
9. OSC
This block generates the oscillating frequency.
10.DRIVER LOGIC
This block is a DC/DC driver. A signal from current comparator is applied to drive the MOSFETs.
11.PGOOD
When the FB terminal voltage reaches 0.8V (Typ) within ±7%, the Nch MOSFET of the built-in open drain output turns off
and the output turns high.
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
4/32
TSZ02201-0J3J0AJ00400-1-2
2014.07.10 Rev.001

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BD9A600MUV 전자부품, 판매, 대치품
BD9A600MUV
Typical Performance Curves
Datasheet
800
700
600
VIN = 5.5V
500
400
300
VIN = 2.7V
200
100
-40
-20
0 20 40
Tem perature[°C]
60
80
Figure 4. Operating Current vs Temperature
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
VIN = 2.7V
1.0 VIN = 5.5V
0.5
0.0
-40
-20
0 20 40
Tem perature[°C]
60
80
Figure 5. Stand-by Current vs Temperature
1.20
1.15
1.10
VIN = 2.7V
1.05
1.00
0.95
0.90
VIN = 5.0V
0.85
0.80
-40
-20
0 20 40
Tem perature[]
60
80
Figure 6. Switching Frequency vs Temperature
0.808
0.806
0.804
0.802
VIN = 2.7V
0.800
0.798
0.796
VIN = 5.0V
0.794
0.792
-40
-20
0 20 40
Tem perature[]
60
80
Figure 7. FB Voltage Reference vs Temperature
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
7/32
TSZ02201-0J3J0AJ00400-1-2
2014.07.10 Rev.001

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관련 데이터시트

부품번호상세설명 및 기능제조사
BD9A600MUV

Single Synchronous Buck DC/DC Converter

ROHM Semiconductor
ROHM Semiconductor

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