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PDF BD9B300MUV Data sheet ( Hoja de datos )
| Número de pieza | BD9B300MUV | |
| Descripción | Single Synchronous Buck DC/DC Converter | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
2.7V to 5.5V Input, 3.0A Integrated MOSFET
Single Synchronous Buck DC/DC Converter
BD9B300MUV
General Description
BD9B300MUV 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.
Features
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)
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: 35mΩ (Typ)
Low-Side MOSFET ON Resistance: 35mΩ (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
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
VIN
10µF
Enable
0.1µF
CSS
PVIN
AVIN
EN
AGND
PGND
SS
MODE
FREQ
PGD
BOOT
SW
CBOOT
1.0µH
R1
FB
R2
PGD
VOUT
CFB 22µF×2
Figure 1. Application Circuit
〇Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
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〇This product has no designed protection against radioactive rays
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BD9B300MUV
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
Operating Temperature Range
Topr
-40 to 85
C
Storage Temperature Range
Tstg
-55 to 150
C
(Note 1) When mounted on a 70mm x 70mm x 1.6mm 4-layer glass epoxy board (copper foil area: 70 mm x 70 mm)
Derate by 21.3mW when operating above 25C
Caution: 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.
Recommended Operating Conditions (Ta= -40°C to +85°C)
Parameter
Symbol
Min
Supply Voltage
Output Current (Note 2)
Output Voltage Range
(Note 3) Pd, ASO should not be exceeded
VPVIN, VAVIN
IOUT
VRANGE
2.7
-
0.8
Typ
-
-
-
Max
5.5
3
VPVIN × 0.8
Unit
V
A
V
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
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5 Page 
BD9B300MUV
Typical Performance Curves - continued
Datasheet
85
RISING
80
75
70
FALLING
65
60
-40
-20
0 20 40 60
Temperature [°C]
80
Figure 20. PGD Threshold vs Temperature
120
110
VIN=3.3V
100
90
VIN=5V
80
70
60
-40 -20
0 20 40 60
Temperature [°C]
80
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
Temperature [°C]
80
Figure 22. Soft Start Time vs Temperature
3.0
2.5
2.0
1.5
VIN=5V
1.0
VIN=3.3V
0.5
0.0
-40 -20
0 20 40 60
Temperature [°C]
80
Figure 23. SS Terminal Current vs Temperature
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
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TSZ02201-0J2J0AJ00410-1-2
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11 Page | ||
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