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BD9575FV-E2 Datasheet(PDF) 1 Page - Rohm

Part # BD9575FV-E2
Description  Switching Regulators for DDR-SDRAM Cores
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD9575FV-E2 Datasheet(HTML) 1 Page - Rohm

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www.rohm.com
2009.04 - Rev.B
© 2009 ROHM Co., Ltd. All rights reserved.
Hi-performance Regulator IC Series for PCs
Switching Regulators
for DDR-SDRAM Cores
BD9575FV
Description
BD9575FV is a switching regulator controller with high output current which can achieve low output voltage (0.7V to 2.0V)
from a wide input voltage range (4.5V to 28V). High efficiency for the switching regulator can be realized by utilizing an
external N-MOSFET power transistor. A new technology called H3Reg
TM is a Rohm proprietary control method to realize
ultra high transient response against load change. SLLM (Simple Light Load Mode) technology is also integrated to improve
efficiency in light load mode, providing high efficiency over a wide load range. For protection and ease of use, the soft start
function, variable frequency function, short circuit protection function with timer latch, over voltage protection function and
REF synchronous function are all built in. This switching regulator is specially designed for the DDR-SDRAM core.
Features
1) H
3RegTM Switching Regulator Controller
2) Light Load Mode and Continuous Mode Changeable
3) Thermal Shut Down (TSD), Under Voltage LockOut (UVLO), Over Current Protection (OCP),
Over Voltage Protection (OVP), Short Circuit Protection (SCP) built-in
4) Soft start function to minimize rush current during startup
5) Switching Frequency Variable (f=200KHz~600KHz)
6) SSOP-B20 Package
Applications
Laptop PC, Desktop PC, LCD-TV, Digital Components
Maximum Absolute Ratings (Ta=25℃)
Parameter
Symbol
Limit
Unit
Input Voltage 1
VCC
7
1
V
Input Voltage 2
VDD
7
1
V
Input Voltage 3
VIN
30
1
V
BOOT Voltage
BOOT
35
1
V
BOOT-SW Voltage
BOOT-SW
7
1
V
HG-SW Voltage
HG-SW
7
1
V
LG Voltage
LG
VDD
V
REF Voltage
REF
VCC
V
Output Voltage
VOUT/Is+/Is-
VCC
V
ILIM/SCP/SS/FS/SLLM Voltage
ILIM/SCP/SS/FS/SLLM
VCC
V
VREG Voltage
VREG
VCC
V
EN Input Voltage
EN
7
1
V
Power Dissipation 1
Pd1
0.5
2
W
Power Dissipation 2
Pd2
0.81
3
W
Operating Temperature Range
Topr
-20~+100
Storage Temperature Range
Tstg
-55~+150
Maximum Junction Temperature
Tjmax
+150
*1 Not to exceed Pd.
*2 Reduced by 4mW for each increase in Ta of 1℃ over 25℃. IC only.
*3 Reduced by 6.5mW for increase in Ta of 1℃ over 25℃. (when mounted on a board 70.0mm×70mm×1.6mm Glass-epoxy PCB, 1 layer)
No.09030EBT11


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