BD9526AMUV Datasheet, PDF (1/5 Pages) Rohm – Silicon Monolithic Integrated Circuit

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STRUCTURE
Silicon Monolithic Integrated Circuit
TYPE
Step down DC/DC converter controller for Laptop PC
PRODUCT SERIES
FEATURES
BD9526AMUV
■ Built in 2ch H³REG DC/DC converter controller
■ The Light load mode efficiency is improved by SLLM (Simple Light Load Mode)
■ Adjustable Switching Frequency (f=200kHz~500kHz)
■ Built in 3ch Linear Regulator
○Absolute Maximum ratings (Ta=25℃)
Parameter
Symbol
Limits
Unit
VIN1, VIN2, CTL
30 *¹*²
V
EXTVCC, FB1, FB2, Is+1, Is+2, MCTL
7 *¹*²
V
FS1, FS2, REF1, REF2, LG1,LG2,TEST1,TEST2
INTVCC+0.3 *¹*²
V
BOOT1, BOOT2
35 *¹*²
V
Terminal voltage
BOOT1-SW1, BOOT2-SW2, HG1-SW1, HG2-SW2
7 *¹*²
V
HG1
BOOT1+0.3 *¹*²
V
HG2
BOOT2+0.3 *¹*²
V
EN1, EN2
6 *¹*²
V
DGND, PGND1, PGND2
AGND±0.3 *¹*²
V
Power dissipation 1
Pd1
0.38*³
W
Power dissipation 2
Pd2
0.88 *⁴
W
Power dissipation 3
Pd3
2.06 *⁵
W
Power dissipation 4
Pd4
4.56 *⁶
W
Operating temperature range
Topr
-10～+100
℃
Storage temperature range
Tstg
-55～+150
℃
Junction Temperature
Tjmax
+150
℃
*1 Do not however exceed Pd.
*2 Instantaneous surge voltage, back electromotive force and voltage under less than 10% duty cycle.
*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
which has 1 layer. (Copper foil area : 0mm²))
*5 Reduced by 16.5mW for increase in Ta of 1℃ over 25℃. (when mounted on a board 70.0mm×70mm×1.6mm Glass-epoxy PCB
which has 4 layers. (1^st and 4^th copper foil area : 20.2mm², 2^nd and 3^rd copper foil area : 5505mm²))
*6 Reduced by 36.5mW for increase in Ta of 1℃ over 25℃. (when mounted on a board 70.0mm×70mm×1.6mm Glass-epoxy PCB
which has 4 layers. (All copper foil area : 5505mm²))
○Operating supply voltage range (Ta=25℃)
Parameter
Symbol
MIN.
MAX.
Unit
VIN1,VIN2
7
25
V
EXTVCC
4.5
5.5
V
CTL
-0.3
25
V
EN1, EN2
-0.3
5.5
V
Terminal voltage
BOOT1, BOOT2
4.5
30
V
BOOT1-SW1, BOOT2-SW2, HG1-SW1, HG2-SW2
-0.3
5.5
V
REF1, REF2
1
2.75
V
Is+1, Is+ 2, FB1, FB2
1.9
5.6
V
MCTL
-0.3
INTVCC+0.3 V
★ This product is not designed for protection against radioactive rays.
Status of this document
The Japanese version of this document is the official specification.
This translated version is intended only as a reference, to aid in understanding the official version.
If there are any differences between the original and translated versions of this document, the official Japanese language version takes priority.
REV. B