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BD9A100MUV Schematic ( PDF Datasheet ) - ROHM Semiconductor

Teilenummer BD9A100MUV
Beschreibung 2.7V to 5.5V Input 1A Integrated MOSFET Single Synchronous Buck DC/DC Converter
Hersteller ROHM Semiconductor
Logo ROHM Semiconductor Logo 




Gesamt 35 Seiten
BD9A100MUV Datasheet, Funktion
Datasheet
2.7V to 5.5V Input, 1A Integrated MOSFET
Single Synchronous Buck DC/DC Converter
BD9A100MUV
General Description
BD9A100MUV is a synchronous buck switching
regulator with built-in low on-resistance power MOSFETs.
It is capable of providing current up to 1A.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×0.7V
Average Output Current:
1A(Max)
Switching Frequency:
1MHz(Typ)
High-Side MOSFET On-Resistance: 60m(Typ)
Low-Side MOSFET On-Resistance: 60m(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.
Typical Application Circuit
VQFN016V3030
Figure 1. Application Circuit
Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
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BD9A100MUV Datasheet, Funktion
BD9A100MUV
Datasheet
Electrical Characteristics (Unless otherwise specified Ta = 25°C, VAVIN = VPVIN = 5V, VEN = 5V)
Parameter
Symbol
Min Typ Max
Unit
Conditions
AVIN PIN
Standby Supply Current
Operating Supply Current
UVLO Detection Voltage
UVLO Release Voltage
ENABLE
EN Input High Level Voltage
EN Input Low Hysteresis Voltage
EN Input Current
MODE
MODE Input High Level Voltage
MODE Input Current
Reference Voltage, Error Amplifier
FB Terminal Voltage
FB Input Current
ITH Sink Current
Soft Start Time
Soft Start Current
SWITCHING FREQUENCY
Switching Frequency
POWER GOOD
Falling (Fault) Voltage
Rising (Good) Voltage
Rising (Fault) Voltage
Falling (Good) Voltage
PGD Output Leakage Current
Power Good ON Resistance
Power Good Low Level Voltage
SWITCH MOSFET
High Side FET ON Resistance
Low Side FET ON Resistance
High Side Output Leakage Current
Low Side Output Leakage Current
SCP
Short Circuit Protection Detection
Voltage
ISTB
ICC
VUVLO1
VUVLO2
- 0 10
- 350 500
2.35 2.45 2.55
2.425 2.55 2.7
µA EN= GND
µA
IOUT= 0mA
Non-switching
V VIN falling
V VIN rising
VENH
VENL
IEN
0.8 1.5 2.0
100 200 300
- 5 10
V
mV
µA EN= 5V
VMODEH
IMODE
0.2 0.4 0.8
- 10 20
V
µA MODE= 5V
VFB
0.792 0.8 0.808
V
IFB - 0 1 µA FB= 0.8V
ITHSI
10 20 40
µA FB= 0.9V
TSS
0.5 1.0 2.0
ms With internal constant
ISS
0.9 1.8 3.6
µA
FOSC
800 1000 1200
kHz
VPGDFF
87
90
93
VPGDRG
90
93
96
VPGDRF
107
110
113
VPGDFG
104
107
110
%
FB falling
VPGDFF= FB/VFBx100
%
FB rising
VPGDRG= FB/VFBx100
%
FB rising
VPGDRF= FB/VFBx100
%
FB falling
VPGDFG =FB/VFBx100
ILKPGD
-
0
5 µA PGD= 5V
RPGD
-
100 200
PGDVL
-
0.1 0.2
V IPGD= 1mA
RONH
RONL
RILH
RILL
-
-
-
-
60 120 mBOOT – SW= 5V
60 120 m
0 10 µA Non-switching
0 10 µA Non-switching
VSCP 0.28 0.4 0.52
V
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
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BD9A100MUV pdf, datenblatt
BD9A100MUV
Typical Performance Curves (Application)
100
MODE = H
90
80
70
60
50
MODE = L
40
30
20 VIN =5.0V
10 VOUT =1.8V
0
0.001
0.01 0.1
Output_Current [A]
1
Figure 22. Efficiency vs Load Current
(VIN=5V, VOUT=1.8V, L=2.2μH)
Datasheet
100
MODE = H
90
80
70
60
50 MODE = L
40
30
20 VIN =3.3V
10 VOUT =1.8V
0
0.001
0.01 0.1
Output_Current [A]
1
Figure 23. Efficiency vs Load Current
(VIN=3.3V, VOUT=1.8V, L=2.2μH)
100
95
90
85
80
75
70
65
60
55
50
0
VOUT =3.3V
80
VIN=5V
60 VOUT=1.8V
40 phase
VOUT =1.2V
VOUT =1.8V
20
0
-20
gain
-40
-60
0.2 0.4 0.6 0.8
Output_Current [A]
-80
1 1K
10K 100K
Frequency[Hz]
180
135
90
45
0
-45
-90
-135
-180
1M
Figure 24. Efficiency vs Load Current
(VIN = 5.0V, MODE = 5.0V, L=2.2μH)
Figure 25. Closed Loop Response
(VIN=5V, VOUT=1.8V, L=2.2μH, COUT=Ceramic 44μF)
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
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TSZ02201-0J3J0AJ00610-1-2
13.Sep.2013 Rev.001
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