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PDF BD9B301MUV-LB Data sheet ( Hoja de datos )

Número de pieza BD9B301MUV-LB
Descripción Single Synchronous Buck DC/DC Converter
Fabricantes ROHM Semiconductor 
Logotipo ROHM Semiconductor Logotipo



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Datasheet
2.7V to 5.5V Input, 3.0A Integrated MOSFET
Single Synchronous Buck DC/DC Converter
BD9B301MUV-LB
General Description
This is the product guarantees long time support in
Industrial market.
BD9B301MUV-LB is a synchronous buck switching
regulator with built-in low on-resistance power MOSFETs.
This IC, which is capable of providing current up to 3A,
features fast transient response by employing constant
on-time control system. It offers high oscillating
frequency at low inductance. With its original constant
on-time control method which operates low consumption
at light load, this product is ideal for equipment and
devices that demand minimal standby power
consumption.
Key Specifications
Input Voltage Range:
2.7V to 5.5V
Output Voltage Range: 0.8 V to VPVIN x 0.8 V
Maximum Operating Current:
3A (Max)
Switching Frequency:
2MHz/1MHz (Typ)
High-Side MOSFET ON Resistance: 35m(Typ)
Low-Side MOSFET ON Resistance: 35m(Typ)
Standby Current:
0μA (Typ)
Package
VQFN016V3030
W (Typ) x D (Typ) x H (Max)
3.00 mm x 3.00 mm x 1.00 mm
Features
Long Time Support Product for Industrial
Applications
Synchronous Single DC/DC Converter
Constant on-time control suitable to Deep-SLLM
Over Current Protection
Short Circuit Protection
Thermal Shutdown Protection
Under Voltage Lockout Protection
Adjustable Soft Start
Power Good Output
VQFN016V3030 Package
(Backside Heat Dissipation)
VQFN016V3030
Applications
Industrial Equipment
Step-down Power Supply for DSPs, FPGAs,
Microprocessors, etc.
Storage Devices (HDDs/SSDs)
Printers, OA Equipment
Distributed Power Supply, Secondary Power Supply
Typical Application Circuit
Figure 1. Application Circuit
Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
This product has no designed protection against radioactive rays
1/30
TSZ02201-0J3J0AJ00830-1-2
2015.04.02 Rev.001

1 page




BD9B301MUV-LB pdf
BD9B301MUV-LB
Datasheet
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Symbol
Rating
Unit
Supply Voltage
VPVIN, VAVIN
-0.3 to +7
V
EN Terminal Voltage
VEN
-0.3 to +7
V
MODE Terminal Voltage
VMODE
-0.3 to +7
V
FREQ Terminal Voltage
VFREQ
-0.3 to +7
V
PGD Terminal Voltage
VPGD
-0.3 to +7
V
Voltage from GND to BOOT
VBOOT
-0.3 to +14
V
Voltage from SW to BOOT
VBOOT
-0.3 to +7
V
FB Terminal Voltage
VFB
-0.3 to +7
V
SW Terminal Voltage
VSW
-0.3 to VPVIN + 0.3
V
Output Current
Allowable Power Dissipation(Note 1)
IOUT
Pd
3.5 A
2.66 W
Maximum Junction Temperature
Tjmax
150 C
Storage Temperature Range
Tstg
-55 to 150
C
(Note 1) VQFN016V3030: Derate by 21.3mW when operating above 25C
PCB size: 70mm x 70mm x 1.6mm when mounted on a 4-layer glass epoxy board (copper foil area: 70mm x 70mm)
Copper foil thickness: Front side and reverse side 70µm be used, 2nd and 3rd 35µm be used.
Caution1: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over
the absolute maximum ratings.
Caution2: Reliability is decreased at junction temperature greater than 125C.
Recommended Operating Conditions
Parameter
Supply Voltage
Output Current (Note 2)
Output Voltage Range
Operating Junction Temperature Range
(Note 2) Pd, ASO should not be exceeded.
Symbol
VPVIN, VAVIN
IOUT
VRANGE
Tj
Min
2.7
-
0.8
-40
Typ Max Unit
- 5.5 V
- 3A
-
VPVIN × 0.8
V
-
+125
C
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
5/30
TSZ02201-0J3J0AJ00830-1-2
2015.04.02 Rev.001

5 Page





BD9B301MUV-LB arduino
BD9B301MUV-LB
Typical Performance Curves - continued
85
80 RISING
75
70
FALLING
65
60
-40 -20 0 20 40 60 80 100 120
Temperature [°C]
Figure 20. PGD Threshold vs Temperature
Datasheet
130
120
110
VIN=3.3V
100
90
80 VIN=5V
70
-40 -20 0 20 40 60 80 100 120
Temperature [°C]
Figure 21. PGD ON ON-Resistance vs Temperature
2.0
1.5
VIN=3.3V
1.0
VIN=5V
0.5
0.0
-40 -20 0 20 40 60 80 100 120
Temperature [°C]
Figure 22. Soft Start Time vs Temperature
2.0
1.5
VIN=5V
1.0
VIN=3.3V
0.5
0.0
-40 -20 0 20 40 60 80 100 120
Temperature [°C]
Figure 23. SS Terminal Current vs Temperature
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
11/30
TSZ02201-0J3J0AJ00830-1-2
2015.04.02 Rev.001

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