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PDF BD91364BMUU Data sheet ( Hoja de datos )
| Número de pieza | BD91364BMUU | |
| Descripción | 5A Integrated MOSFET Single Synchronous Buck DC/DC Converter | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
2.9V to 5.5V Input, 5A Integrated MOSFET
Single Synchronous Buck DC/DC Converter
BD91364BMUU
General Description
ROHM’s high efficiency switching regulator,
BD91364BMUU, is a step-down converter designed to
produce a low voltage output of 0.8V to 3.3V from a 2.9V
to 5.5V power supply line. It offers high efficiency in all
load ranges by automatic PFM/PWM adjustment. It
employs an On-time control system to provide faster
transient response to sudden change in load.
Features
Fast transient response with On-time control
system.
High efficiency for all load range with synchronous
rectifier (Nch/Nch FET) and adaptive PFM/PWM
system.
Adjustable Soft-start function.
Thermal and UVLO protection.
Short-circuit current protection with timer latch.
Shutdown function.
Key Specifications
Input Voltage Range:
2.9V to 5.5V
Output Voltage Range:
0.8V to PVCC×0.8V
Output Current:
5.0A(Max)
Switching Frequency:
1.7MHz(Typ)
High Side FET ON Resistance:
27mΩ(Typ)
Low Side FET ON Resistance:
27mΩ(Typ)
Standby Current:
0μA (Typ)
Operating Temperature Range: -40°C to +105°C
Package
VQFN20U4040M
W(Typ) x D(Typ) x H(Max)
4.00mm x 4.00mm x 0.50mm
Applications
Power supply for LSI including SoC, DSP,
Micro computer and ASIC
Laptop PC / Tablet PC / Server
LCD TV, Storage Devices (HDD / SSD)
Printer
Entertainment device
Secondary power supply
VQFN20U4040M
Typical Application Circuit
VIN
CIN
22µF
CSS
PVCC
AVCC
EN
BD91364BMUU
SS
GND
RS
PGD
BST
SW
FB
CBST
L
0.47µH
PGD
VOUT
CO
22µF
Figure 1. Typical Application Circuit
〇Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
〇This product has no designed protection against radioactive rays
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TSZ02201-0J2J0AJ00930-1-2
27.Jul.2015 Rev.001
1 page  
BD91364BMUU
Typical Performance Curves
Datasheet
SW pin
5V/div
VOUT
100mV/div
Iinductor
2A/div
1µs/div
PVCC=5V
VOUT=1.0V
L=0.47µH
SW pin
5V/div
VOUT
100mV/div
Iinductor
2A/div
PVCC =5V
VOUT=1.0V
L=0.47µH
1µs/div
Figure 4. PFM operation, load 0mA
Figure 5. PFM operation, load 100mA
SW pin
5V/div
VOUT
100mV/div
Iinductor
2A/div
SW pin
5V/div
PVCC =5V
VOUT=1.0V
L=0.47µH
VOUT
100mV/div
Iinductor
2A/div
1µs/div
1µs/div
PVCC=5V
VOUT=1.0V
L=0.47µH
Figure 6. PWM operation, load 1000mA
Figure 7. PWM operation, load 5000mA
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
5/27
TSZ02201-0J2J0AJ00930-1-2
27.Jul.2015 Rev.001
5 Page 
BD91364BMUU
Typical Performance Curves - continued
Datasheet
110
105
Ta=25°C
100
95
90
85
80
3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VVOOLLTTAAGGEE : :VPI NV C[VC] [V]
Figure 25. PowerGood MOSFET On-resistor
6
5
4
3
2
1
0
0.60
0.62 0.64 0.66 0.68
FEED BACK VOLTAGE : VFB [V]
0.70
Figure 26. PowerGood voltage/hysteresis
1.02
1.01
PVCC=5V
VOUT=1.0V
L=0.47µH
1.00
0.99
0.98
0
1000 2000 3000 4000
OU TPU T CU RRENT : IOUT [mA]
5000
Figure 27. Output variation (Load regulation)
1.005
1.004
1.003
1.002
1.001
1.000
0.999
0.998
0.997
0.996
0.995
3.0
VOUT=1.0V/1A
L=0.47µH
3.5 4.0 4.5 5.0
IINNPPUUTT VVOOLLTTAAGGEE ::P VVICNC [[VV]]
5.5
Figure 28. Output variation (Line regulation)
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
11/27
TSZ02201-0J2J0AJ00930-1-2
27.Jul.2015 Rev.001
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BD91364BMUU.PDF ] | |
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