BD9560MUV_09 Datasheet, PDF (1/22 Pages) Rohm – Switching Regulator Controller for Graphic Chip Cores

Hi-performance Regulator IC Series for PCs
Switching Regulator Controller
for Graphic Chip Cores
BD9560MUV
No.09030EBT10
●Description
BD9560MUV is a switching regulator controller with high output current which can achieve low output voltage (0.412V～
1.2875V) from a wide input voltage range (4.5V～25V). The setting of output voltage depends on DAC built in. High
efficiency for the switching regulator can be realized by utilizing an external N-MOSFET power transistor. 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, over current protection and power good function are all built in. This
switching regulator is specially designed for GMCH.
●Features
1) Switching Regulator Controller
2) Light Load Mode and Continuous Mode Changeable
3) Thermal Shut Down circuit built-in (TSD)
4) Under Voltage LockOut circuit built-in (UVLO)
5) Over Current Protection circuit built-in (OCP)
6) Over Voltage Protection circuit built-in (OVP)
7) Short circuit protection with timer-latch built-in
8) Power good circuit built-in
9) Soft start function to minimize rush current during startup
10) Switching Frequency Variable (f=200KHz～600KHz)
11) VQFN032V5050 package
●Applications
Laptop PC, Desktop PC, Digital Components
●Maximum Absolute Ratings (Ta=25℃)
Parameter
Symbol
Limits
Unit
Input voltage 1
Input voltage 2
Input voltage 3
BOOT voltage
BOOT-SW voltage
HG-SW voltage
VCC
PVCC
VIN
BOOT
BOOT-SW
HG-SW
7 ^*1*2
V
7 ^*1*2
V
35 ^*1*2
V
35 ^*1*2
V
7 ^*1*2
V
7 ^*1*2
V
LG voltage
LG
PVCC
V
VREF voltage
VRON input voltage
VREF
VRON
VCC
V
7 ^*1
V
Logic input voltage
CL/SCP/SS/TON/SLLM/VID4-0/PWRGD_C/DAC_C
VCC
V
Logic output voltage 1
PWRGD
7
V
Logic output voltage 2
Power dissipation1
Power dissipation2
SUS_OUT
Pd1
Pd2
VCC
V
0.38^*3
W
0.88^*4
W
Operating Temperature Range
Topr
-10～+100
℃
Storage Temperature Range
Tstg
-55～+150
℃
Junction Temperature
Tjmax
+150
℃
*1 Not to exceed Pd..
*2 Maximum voltage that can be proof against instantaneous applied voltage such as serge, back electromotive voltage or continuous pulse applied voltage
(Duty ratio : less than 10%)
*3 Reduced by 3.0mW for each increase in Ta of 1℃ over 25℃ (when don’t mounted on a heat radiation board )
*4 Reduced by 7.0mW for increase in Ta of 1℃ over 25℃. (when mounted on a board 70.0mm×70mm×1.6mm Glass-epoxy PCB.)
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2009.04 - Rev.B