|
|
PDF BD9141MUV Data sheet ( Hoja de datos )
| Número de pieza | BD9141MUV | |
| Descripción | 2A 1ch Synchronous Buck Converter | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de BD9141MUV (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
|
No Preview Available !
Datasheet
4.5V to 13.2V, 2A 1ch
Synchronous Buck Converter with
Integrated FET
BD9141MUV
General Description
The BD9141MUV is ROHM’s high efficiency
step-down switching regulator designed to produce a
low voltage including 5.0V/3.3V from 2 lithium cell
power supply line. It offers high efficiency by using
pulse skip control technology and synchronous
switches, and provides fast transient response to
sudden load changes by implementing current mode
control.
Key Specifications
Input Voltage Range:
Output Voltage Range:
Output Current:
Switching Frequency:
Pch FET ON-Resistance:
Nch FET ON-Resistance:
Standby Current:
Operating Temperature Range:
4.5V to 13.2V
2.5V to 6.0V
2.0A(Max)
500KHz(Typ)
150mΩ(Typ)
80mΩ(Typ)
0μA (Typ)
-40°C to +105°C
Features
■ Fast Transient Response because of Current Mode
PWM Control System
■ High Efficiency for All Load Ranges because of
Synchronous Rectifier (Nch/Pch FET) and SLLMTM
(Simple Light Load Mode)
■ Soft-Start Function
■ Thermal Shutdown and UVLO Functions
■ Short-Circuit Protection with Time Delay Function
■ Shutdown Function
Package
W(Typ) x D(Typ) x H(Max)
Applications
Power Supply for LSI including DSP, Microcomputer and ASIC
Typical Application Circuit
VQFN020V4040
4.00mm x 4.00mm x 1.00mm
VCC
CIN
VCC,PVCC
L
EN SW
ADJ
CO
ITH GND,PGND
RITH
CITH
VOUT
R2
R1
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
.www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
1/22
TSZ02201-0J3J0AJ00180-1-2
04.Jun.2015 Rev.003
1 page  
BD9141MUV
Typical Performance Curves - continued
【VOUT=5V】
VCC=8V
Ta=25°C
VCC=8V
Datasheet
Output Current: IOUT [mA]
Figure 8. Efficiency vs Output Current
Temperature: Ta [°C]
Figure 9. Frequency vs Temperature
VCC=8V
VCC=8V
Temperature: Ta [°C]
Figure 10. ON-Resistance vs Temperature
Temperature: Ta [°C]
Figure 11.ON-Resistance vs Temperature
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/22
TSZ02201-0J3J0AJ00180-1-2
04.Jun.2015 Rev.003
5 Page 
BD9141MUV
Datasheet
4. Switching Regulator Efficiency
The Efficiency ŋ may be expressed by the equation shown below:
VOUT
VIN
IOUT
IIN
100
POUT
PIN
100
POUT
POUT Pd
100
[%]
The efficiency may be improved by reducing the switching regulator power dissipation factors Pdα as follows:
Dissipation factors:
(1) ON-Resistance Dissipation of Inductor and FET：Pd(I2R)
Pd (I 2 R) I OUT 2 (RCOIL RON )
Where:
RCOIL is the DC resistance of inductor
RON is the ON-Resistance of FET
IOUT is the Output current
(2) Gate Charge/Discharge Dissipation：Pd(Gate)
Pd (Gate) C gs f V 2
Where:
Cgs is the gate capacitance of FET
f is the switching frequency
V is the gate driving voltage of FET
(3) Switching Dissipation：Pd(SW)
Pd(SW )
VIN 2
CRSS IOUT
I DRIVE
f
Where:
CRSS is the Reverse transfer capacitance of FET.
IDRIVE is the Peak current of gate.
(4) ESR Dissipation of Capacitor：Pd(ESR)
Pd(ESR) I RMS 2 ESR
Where:
IRMS is the ripple current of capacitor.
ESR is the equivalent series resistance.
(5) Operating Current Dissipation of IC：Pd(IC)
Pd (IC ) VIN I CC
Where:
ICC is the Circuit current.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/22
TSZ02201-0J3J0AJ00180-1-2
04.Jun.2015 Rev.003
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet BD9141MUV.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| BD9141MUV | 2A 1ch Synchronous Buck Converter | 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 |