Switching Regulator. BD9535MUV Datasheet

BD9535MUV Regulator. Datasheet pdf. Equivalent

Part BD9535MUV
Description Switching Regulator
Feature High Performance Regulators for PCs Switching Regulator for DDR-SDRAM Cores BD9535MUV No.10030EBT34.
Manufacture Rohm
Datasheet
Download BD9535MUV Datasheet



BD9535MUV
High Performance Regulators for PCs
Switching Regulator
for DDR-SDRAM Cores
BD9535MUV
No.10030EBT34
Description
BD9535MUV is a 2ch switching regulator controller with high output current which can achieve low output voltage (0.7V
2.0V) from a wide input voltage range (4.5V25V). High efficiency for the switching regulator can be realized by utilizing an
external N-MOSFET power transistor. A new technology called H3RegTM is a Rohm proprietary control method to realize
ultra high transient response against load change. SLLMTM (Simple Light Load Mode) technology is also integrated to
improve efficiency in light load mode, providing high efficiency over a wide load range. For the soft start/stop function,
variable frequency function, short circuit protection function with timer latch, and tracking function are all built in. This 2ch
switching regulator is specially designed for Chipset and Front Side Bus.
Features
1) 2ch H3REGTM Switching Regulator Controller
2) Light Load Mode and Continuous Mode Changeable
3) Thermal Shut Down (TSD), Under Voltage LockOut (UVLO),
Over Current (detect the peak current) Protection (OCP), Over Voltage Protection (OVP),
Short circuit protection with built-in timer-latch
4) Soft start function to minimize rush current during startup
5) Switching Frequency Variable (f=200KHz600kHz)
6) VQFN032V5050 package
7) Built-in Power good circuit
8) Adjustable to chip set spec by tracking function
Applications
Laptop PC, Desktop PC, LCD-TV, Digital Components
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/21
2010.07 - Rev.B



BD9535MUV
BD9535MUV
Maximum Absolute Ratings (Ta=25)
Parameter
Input Voltage 1
Input Voltage 2
Input Voltage 3
BOOT Voltage
BOOT-SW Voltage
HG-SW Voltage
LG Voltage
Setting for Output Voltage
Output voltage
SS Voltage
FS Voltage
VREG voltage
Current Limit setting Voltage
Logic Input Voltage
PGOOD Voltage
CE Voltage
Power dissipation
Operating Temperature Range
Storage Temperature Range
Junction Temperature
*1 Not to exceed Pd.
Symbol
VCC
VDD
VIN
VBOOT1/2
VBOOT1-VSW1, VBOOT2-VSW2
VHG1-VSW1, VHG2-VSW2
VLG1/2
VREF1/2
VIs+1/2, VIs-1/2
VSS1/2
VFS
VREG
VILIM1/2
VEN1/2
VPGOOD1/2
VCE1/2
Pd
Topr
Tstg
Tjmax
Operating Conditions (Ta=25)
Parameter
Symbol
Input Voltage 1
VCC
Input Voltage 2
VDD
Input Voltage 3
VIN
BOOT Voltage
VBOOT1/2
SW Voltage
VSW1/2
BOOT-SW Voltage
VHG1-VSW1, VHG2-VSW2
Logic Input Voltage
VEN1/2
Setting Voltage for Output Voltage
VREF1/2
Is Input Voltage
VIs+1/2, VIs-1/2
MIN ON time
tonmin
This product should not be used in a radioactive environment.
Technical Note
Ratings
7 *1
7 *1
30 *1
35 *1
7 *1
7 *1
VDD
VCC
VCC
VCC
VCC
VCC
VCC
7 *1
7 *1
7 *1
T.B.D
-10+100
-55+150
+150
Unit
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
W
Ratings
Min. Max.
4.5 5.5
4.5 5.5
3.0 28
4.5 30
-2 33
4.5 5.5
0 5.5
0.7 2.0
0.7 2.0
- 100
Unit
V
V
V
V
V
V
V
V
V
nsec
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
2/21
2010.07 - Rev.B





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