|
|
PDF BD9524MUV Data sheet ( Hoja de datos )
| Número de pieza | BD9524MUV | |
| Descripción | Main Power Supply IC | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de BD9524MUV (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
|
No Preview Available !
Hi-performance Regulator IC Series for PCs
Main Power Supply IC
for Note PC (Linear Regulator Integrated)
BD9524MUV
No.10030ECT06
●Description
BD9524MUV is a switching regulator controller with high output current which can achieve low output voltage (2.0V～5.5V)
from a wide input voltage range (7V~25V). 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. 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 with timer latch, and
Power good function are all built in. This switching regulator is specially designed for Main Power Supply.
●Features
1) 2ch H3RegTM Switching Regulator Controller
2) Adjustable Simple Light Load Mode (SLLM), Quiet Light Load Mode (QLLM) and Forced continuous Mode
3) Thermal Shut Down (TSD), Under Voltage Lock Out (UVLO), Over Current Protection (OCP),
Over Voltage Protection (OVP), Short circuit protection with timer-latch (SCP)
4) Soft start function to minimize rush current during startup
5) Switching Frequency Variable (f=200KHz～500KHz)
6) Power good circuit
7) 2ch Linear regulator
8) VQFN032V5050 package
●Applications
Laptop PC, Desktop PC, LCD-TV, Digital Components
www.DataSheet.co.kr
●Maximum Absolute Ratings (Ta=25℃)
Parameter
Terminal voltage
Symbol
VIN, CTL
EXTVCC, PGOOD1, PGOOD2FB1, FB2, Is+1, Is+2, MCTL
FS1, FS2, REF1, REF2, SS1, SS2, LG1, LG2
BOOT1, BOOT2
BOOT1-SW1, BOOT2-SW2, HG1-SW1, HG2-SW2
HG1
HG2
Limits
30 *1*2
7*1*2
REG1+0.3*1*2
35*1*2
7*1*2
BOOT1+0.3*1*2
BOOT2+0.3 *1*2
Power dissipation 1
Power dissipation 2
Power dissipation 3
Power dissipation 4
EN1, EN2
DGND, PGND1, PGND2
Pd1
Pd2
Pd3
Pd4
6 *1*2
AGND±0.3 *1*2
0.38 *3
0.88 *4
2.06 *5
4.56 *6
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. (1st and 4th copper foil area : 20.2mm2, 2nd and 3rd 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))
Unit
V
V
V
V
V
V
V
V
V
W
W
W
W
℃
℃
℃
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/20
2010.03 - Rev.C
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
BD9524MUV
●Pin Configuration
24 23 22 21 20 19 18 17
PGND1 25
LG1 26
EXTVCC 27
REG2 28
REG1 29
VIN 30
LG2 31
PGND2 32
16 Is+1
15 FB1
14 FS1
13 AGND
FIN
12 MCTL
11 FS2
10 FB2
9 Is+2
12345678
Technical Note
●Pin Function Table
PIN No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Reverse
PIN name
SW2
HG2
BOOT2
EN2
PGOOD2
SS2
DGND
REF2
Is+2
FB2
FS2
MCTL
AGND
FS1
FB1
Is+1
REF1
CTL
SS1
PGOOD1
EN1
BOOT1
HG1
SW1
PGND1
LG1
EXTVCC
REG2
REG1
VIN
LG2
PGND2
FIN
PIN Function
Highside FET source pin 2
Highside FET gate drive pin 2
HG Driver power supply pin 2
Vo2 ON/OFF pin (High=ON, Low=OFF)
Vo2 Power Good Open Drain Output pin
Vo2 soft start pin
Ground
Vo2 output voltage setting pinwww.DataSheet.co.kr
Current sense pin +2
Vo2 output voltage sense pin, current sense pin -2
Input pin for setting Vo2 frequency
Mode shift pin (Low=continuous, Middle=QLLM, High=SLLM)
Input pin Ground
Input pin for setting Vo1 frequency
Vo2 output voltage sense pin, current sense pin -1
Current sense pin +1
Vo1 output voltage setting pin
Linear regulator ON/OFF pin (High=ON, Low=OFF)
Vo1 soft start pin
Vo1 Power Good Open Drain Output pin
Vo1 ON/OFF pin (High=ON, Low=OFF)
HG Driver power supply pin 1
Highside FET gate drive pin 1
Highside FET source pin 1
Lowside FET source pin 1
Lowside FET gate drive pin 1
Outside power supply input pin
3.3V linear regulator output pin
5V linear regulator output pin
Power supply input pin
Lowside FET gate drive pin 2
Lowside FET source pin 2
Exposed Pad, Connect to GND
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
5/20
2010.03 - Rev.C
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
BD9524MUV
Technical Note
● External Component Selection
1. Inductor (L) selection
VIN
IL
L
ΔIL
VOUT
Co
Output ripple current
The inductor value is a major influence on the output ripple
current. As formula (4) below indicates, the greater the inductor or
the switching frequency, the lower the ripple current.
(VIN-VOUT)×VOUT
ΔIL=
L×VIN×f
[A]・・・(4)
The proper output ripple current setting is about 30% of maximum
output current.
ΔIL=0.3×IOUTmax. [A]・・・(5)
(VIN-VOUT)×VOUT
L= ΔIL×VIN×f
[H]・・・(6)
(ΔIL: output ripple current; f: switch frequency)
※Passing a current larger than the inductor’s rated current will cause magnetic saturation in the inductor and decrease
system efficiency. In selecting the inductor, be sure to allow enough margin to assure that peak current does not exceed
the inductor rated current value.
※To minimize possible inductor damage and maximize efficiency, choose a inductor with a low (DCR, ACR) resistance.
2.Output Capacitor (CO) Selection
VIN
VOUT
When determining the proper output capacitor, be sure to factor in the equivalent
series resistance required to smooth out ripple volume and maintain a stable
output voltage range.
Output ripple voltage is determined as in formula (7) below.
L
ESR
Co CEXT
Load
Output Capacitor
ΔVOUT=ΔIL×ESR [V]・・・(7)
(ΔIL: Output ripple current; ESR: CO equivalent series resistance)
※ In selecting a capacitor, make sure the capacitor rating allows sufficient
www.DataSheet.co.kr
margin relative to output voltage. Note that a lower ESR can minimize output
ripple voltage.
Please give due consideration to the conditions in formula (8) below for output capacity, bear in mind that output rise time
must be established within the soft start time frame.
Co+CEXT≦ TSS×(Limit-IOUT)
VOUT
・・・(8)
Tss: Soft start time
Limit: Over current detection 2A(Typ)
Note: Improper capacitor may cause startup malfunctions.
3. Input Capacitor (Cin) Selection
VIN
Cin
VOUT
L
Co
Input Capacitor
The input capacitor selected must have low enough ESR resistance to fully
support large ripple output, in order to prevent extreme over current. The
formula for ripple current IRMS is given in (9) below.
IRMS=IOUT×
√VIN(VIN-VOUT)
VIN
Where VIN=2×VOUT, IRMS=
IOUT
2
[A]・・・(9)
A low ESR capacitor is recommended to reduce ESR loss and maximize efficiency.
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
11/20
2010.03 - Rev.C
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet BD9524MUV.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| BD9524MUV | Main Power Supply IC | ROHM Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |