|
|
PDF EMQ9920 Data sheet ( Hoja de datos )
| Número de pieza | EMQ9920 | |
| Descripción | 2 Channel Power Management IC | |
| Fabricantes | Elite Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de EMQ9920 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
|
No Preview Available !
ESMT/EMP
EMQ9920
2 Channel Power Management IC For
Portable Devices
GENERAL DESCRIPTION
The EMQ9920 is a high efficiency, 2-channel power
management IC for battery-powered, portable
devices application. It integrates two high efficiency
step-down DC/DC converters.
The two Synchronous Buck converters (CH3, CH4)
operate from 2.5V to 5.5V input voltage, up to
600mA loading capability and regulate adjustable
output voltage from 0.6V to 5.5V. It features low
quiescent current, 1.5MHz internal frequency
operation.
The EMQ9920 is available in TQFN16 3x3 package.
It is Green compliant (RoHS and Halogen-free).
FEATURES
Two Synchronous Buck Converters
．Achieve 95% efficiency
．Input Voltage : 2.5V to 5.5V
．Output Current up to 600mA
．Reference voltage 0.6V
．Quiescent Current 200μA with No Load
．Internal switching frequency 1.5MHz
．No Schottky Diode needed
．Low Dropout Operation: 100% Duty Cycle
．Shutdown current < 1μA
．Excellent Line and Load Transient Response
．Over-temperature Protection
APPLICATIONS
．Blue-Tooth devices
．Cellular and Smart Phones
．Personal multi-media Player (PMP)
．Wireless networking
．Digital Still Cameras
．Portable applications
Figure 1. Typical Application
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Mar. 2009
Revision : 2.0
1/18
1 page  
ESMT/EMP
EMQ9920
ABSOLUTE MAXIMUM RATINGS
Supply Input Voltage
-0.3V to 6.0V
(VIN1, VIN2)
LX1 Switch PIN Voltage
-0.3V to (VIN1+0.3V)
LX2 Switch PIN Voltage
-0.3V to (VIN2+0.3V)
Other I/O PIN Voltage
-0.3V to VIN (VN1, VIN2)
Storage Temperature
-65°C to +150°C
Switch Source Current (DC) 800mA
Switch Sink Current (DC)
800mA
ESD Susceptibility
Junction Temperature
Thermal Resistance
θJA (TQFN16 3x3)
Operating Ratings
Temperature Range
Supply Voltage
(VIN1, VIN2)
TBD
150°C
55°C/W
-40°C ≦ TA ≦ 85°C
2.5V ≦ VDD ≦ 5.5V
ELECTRICAL CHARACTERISTICS
Apply for VIN1 = 3.6V, VIN2 = 3.6V and TA = 25°C (unless otherwise noted), Boldface limits apply for the operating
temperature extremes: -40°C and 85°C.
Symbol
Parameter
Conditions
EMQ9920
Min Typ Max
Units
CH1 (Note 4)
IVFB1 Feedback Current
±30 nA
VFB1
ΔVFB1
ΔVOVL1
Regulated Feedback Voltage
TA = 25°C
–40°C ≤ TA ≤ 85°C
Reference Voltage Line
Regulation
VIN1 = 2.5V to 5.5V
Output Over-voltage Lockout ΔVOVL1 = VOVL1 – VFB1
0.588 0.600 0.612
0.585 0.600 0.615
0.4
20 50 80
V
%/V
mV
ΔVOUT1
IPK1
IQ1
Output Voltage Line Regulation VIN1 = 2.5V to 5.5V
Output Voltage Load
Regulation
Peak Inductor Current
VIN1 = 3V, VFB1 = 0.5V or VOUT1
= 90%,
Duty Cycle < 35%
Quiescent Current (Note 5)
VFB1 = 0.5V or VOUT1 = 90%
Shutdown
VEN1 = 0V, VIN1 = 4.2V
0.4
0.5
%/V
%
1.0
200 340
0.1 1
A
µA
µA
fOSC1
Oscillator Frequency
VFB1 = 0.6V or VOUT1 = 100%
1.2
1.5
1.8
VFB1 = 0V or VOUT1 = 0V
290
MHz
kHz
RPFET1
R DS(ON) of PMOS
ILX1 = 100mA
0.45 0.55
Ω
RNFET1
ILX1
VEN1
R DS(ON) of NMOS
LX1 Leakage
EN1 Threshold
ILX1 = –100mA
VEN1 = 0V, VLX1 = 0V or 5V,
VIN1 = 5V
0.40 0.5
±1
0.5 1.3
Ω
µA
V
IEN1 EN1 Leakage Current
CH2 (Note4)
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
±1 µA
Publication Date : Mar. 2009
Revision : 2.0
5/18
5 Page 
ESMT/EMP
CH2 RDS(ON) vs Temperature
EMQ9920
CH2 RDS(ON) vs Input Voltage
CH2 Dynamic Supply Current vs Temperature
CH2 Dynamic Supply Current vs Supply Voltage
CH2 Oscillator Frequency vs Temperature
CH2 Oscillator Frequency vs Supply Voltage
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Mar. 2009
Revision : 2.0
11/18
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet EMQ9920.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EMQ9920 | 2 Channel Power Management IC | Elite 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 |