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PDF BD9528AMUV Data sheet ( Hoja de datos )
| Número de pieza | BD9528AMUV | |
| Descripción | PCs Main Power Supply | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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High Performance Regulators for PCs
Main Power Supply
for Notebook PCs
(With Built-in Linear Regulator)
BD9528AMUV
No.11030JAT46
●Description
BD9528AMUV is a 2ch switching regulator controller with high output current which can achieve low output voltage (1.0V～
5.5V) from a wide input voltage range (5.5V～28V). High efficiency for the switching regulator can be realized by utilizing an
external N-MOSFET power transistor. A new technology called H3RegTM(High speed, High efficiency, High performance) 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, 2ch LDO (5V/3.3V (total 100mA)), the soft start function, variable frequency function, short
circuit protection function with timer latch, over voltage protection, and Power good function are all built in. This switching
regulator is specially designed for Main Power Supply of laptop PC.
●Features
1) 2ch H3REGTM DC/DC Converter controller
2) Adjustable Simple Light Load Mode (SLLM), Quiet Light Load Mode (QLLM) and Forced continuous Mode
3) Ther mal Shut Down (TSD), Under Voltage LockOut (UVLO), Over Current Protection (OCP),
Over Voltage Protection (OVP), Short circuit protection with 0.75ms timer-latch (SCP)
4) Soft start function to minimize rush current during startup
5) Switching Frequency Variable (f=150kHz～500kHz)
6) Built-in Power good circuit
7) Built-in 2ch Linear regulator (5V/3.3V (total 100mA)) www.DataSheet.co.kr
8) Built in reference voltage(0.7V)
9) VQFN032-V5050 package
10) Built-in BOOT-Di
11) Built-in output discharge
12) ESD Susceptibility ( HBM (Human Body Model) : 2kV, MM (Machine Model) : 200V )
●Applications
Laptop PC, Desktop PC, LCD-TV, Digital Components
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
1/29
2011.11 - Rev.A
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
BD9528AMUV
Technical Note
●Output condition table
Input
CTL EN1 EN2 REG1(5V)
Low Low Low OFF
Low
Low
High
OFF
Low High Low OFF
Low High High OFF
High
Low
Low
ON
High Low High ON
High
High
Low
ON
High
High
High
ON
※ CTL pin is connected to VIN pin with 1MΩ resistor(pull up) internal IC.
※ EN pin is connected to AGND pin with 1MΩ resistor(pull down) internal IC.
●Block Diagram, Application circuit
Output
REG2(3.3V)
DC/DC1
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON OFF
ON OFF
ON ON
ON ON
DC/DC2
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
FS2
10
5
PG OO D2
FB2
11
6
SS2
I L IM2
8
EN2
4
3 2 1 31
REG1
32
22 23
24 26
REG1
25
CL2
SCP2
OVP2
Short through
Protection
Ci rc uit
SLLMTM
B lo ck
MCT L
H3RegTM
Controller
Block
FS2
www.DataSheet.co.kr
MCT L
Short through
Protec tion
Circuit
SLLMTM
Block
CL1
SCP1
OVP1
H3RegTM
FS1 Controller
Bloc k
EN 2 EN 1
Thermal
Pr otecti on
Refer enc e
Block
5V 3.3V
Reg Reg
AGND
13
FS1 RFS1
15
20
P G OO D1
F B1
14
REF
12
SS1
19
ILIM1
17
EN1
21
79
30
29 28 18 16
27
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
5/29
2011.11 - Rev.A
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
BD9528AMUV
●Reference data
3.500
3.000
2.500
2.000
1.500
1.000
0.500
0.000
0
V IN =7.5V ( -5℃ ）
VIN=21V（-5℃）
V IN =7.5V ( 75℃ ）
VIN=21V（75℃）
2 4 6 8 10 12 14 16
IOUT [A]
Fig.49 Ta-IOCP
(Vo=3.3V)
5.1
5
4.9
4.8
4.7
4.6
4.5
0
IOUT - REG1 voltage
50 100 150 200
IOUT [mA]
Fig.50 IREG1-REG1
250
Technical Note
3.4
3.3
3.2
3.1
3
2.9
2.8
0
IOUT - REG2 voltage
50 100 150 200 250
IOUT [mA]
Fig.51 IREG2-REG2
www.DataSheet.co.kr
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
11/29
2011.11 - Rev.A
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BD9528AMUV.PDF ] | |
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