|
|
PDF RT8035 Data sheet ( Hoja de datos )
| Número de pieza | RT8035 | |
| Descripción | 1.25MHz Synchronous Step-Down Converter | |
| Fabricantes | Richtek | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de RT8035 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
®
RT8035
Dual 800mA, 1.25MHz Synchronous Step-Down Converter
General Description
The RT8035 is a high-efficiency Pulse-Width-Modulated
(PWM) dual step-down DC/DC converter. Capable of
delivering up to 800mA output current over a wide input
voltage range from 2.5V to 5.5V, the RT8035 is ideally
suited for portable electronic devices that are powered
from 1-cell Li-ion battery or from other power sources such
as cellular phones, PDAs, PC WLAN card and hand-held
devices.
Three operating modes are available including : PWM
mode, Low-Dropout Mode and shut-down mode. The
Internal synchronous rectifier with low RDS(ON) dramatically
reduces conduction loss at PWM mode. No external
Schottky diode is required in practical application. The
RT8035 enters Low-Dropout mode when normal PWM
cannot provide regulated output voltage by continuously
turning on the upper P-MOSFET. The RT8035 enters shut-
down mode and consumes less than 0.1μA when the EN
pin is pulled low.
The switching ripple is easily smoothed-out by small
package filtering elements due to the fixed operating
frequency of 1.25MHz. The RT8035 is available in the
WDFN-10L 3x3 package.
Ordering Information
RT8035
Package Type
QW : WDFN-10L 3x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Z : ECO (Ecological Element with
Halogen Free and Pb free)
Note :
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Features
z 2.5V to 5.5V Input Range
z 800mA Output Current
z 1.25MHz Fixed Frequency PWM Operation
z 95% Efficiency
z No Schottky Diode Required
z 0.6V Reference Allows Low Output Voltage
z Low Dropout Operation : 100% Duty Cycle
z Small 10-Lead WDFN Package
z RoHS Compliant and Halogen Free
Applications
z Portable Instruments
z Microprocessors and DSP Core Supplies
z Cellular Phones
z Wireless and DSL Modems
z PC Cards
Pin Configurations
(TOP VIEW)
EN1 1
FB1 2
VIN2 3
GND 4
LX2 5
10 LX1
9 GND
8 VIN1
7 FB2
11 EN2
WDFN-10L 3x3
Marking Information
RT8035GQW
GD=YM
DNN
GD= : Product Code
YMDNN : Date Code
RT8035ZQW
GD YM
DNN
GD : Product Code
YMDNN : Date Code
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8035-05 October 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
Typical Operating Characteristics
100
90
80
70
60
50
40
30
20
10
0
0.001
Efficiency vs. Output Current
VIN = 2.5V
VIN = 3.3V
VIN = 5.5V
VOUT = 1.2V
0.01 0.1
Output Current (A)
1
Reference Voltage vs. Input Voltage
0.620
0.615
0.610
0.605
0.600
0.595
0.590
0.585
0.580
VOUT = 1.2V, IOUT = 0.1A
2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V)
1.50
1.45
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
-50
Frequency vs. Temperature
VIN = 3.3V, VOUT = 1.2V
-25 0 25 50 75 100 125
Temperature (°C)
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8035-05 October 2012
RT8035
1.230
1.225
1.220
1.215
1.210
1.205
1.200
1.195
1.190
1.185
1.180
0
Output Voltage vs. Output Current
VIN = 3.3V
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Output Current (A)
Reference Voltage vs. Temperature
0.620
0.615
0.610
0.605
0.600
0.595
0.590
0.585
0.580
-50
-25
VIN = 2.5V, VOUT = 1.2V, IOUT = 0.1A
0 25 50 75
Temperature (°C)
100 125
2.1
1.9
1.7
1.5
1.3
1.1
0.9
0.7
0.5
-50
Current Limit vs Temperature
VIN = 3.3V, VOUT = 1.2V
-25 0 25 50 75 100 125
Temperature (°C)
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
Outline Dimension
RT8035
D2
D
L
E E2
SEE DETAIL A
1
21
21
eb
DETAIL A
Pin #1 ID and Tie Bar Mark Options
A
A3
A1
Note : The configuration of the Pin #1 identifier is optional,
but must be located within the zone indicated.
Symbol
A
A1
A3
b
D
D2
E
E2
e
L
Dimensions In Millimeters
Min
0.700
Max
0.800
0.000
0.050
0.175
0.250
0.180
0.300
2.950
3.050
2.300
2.650
2.950
3.050
1.500
1.750
0.500
0.350
0.450
Dimensions In Inches
Min
0.028
Max
0.031
0.000
0.002
0.007
0.010
0.007
0.012
0.116
0.120
0.091
0.104
0.116
0.120
0.059
0.069
0.020
0.014
0.018
W-Type 10L DFN 3x3 Package
Richtek Technology Corporation
5F, No. 20, Taiyuen Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789
Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should
obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot
assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be
accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries.
DS8035-05 October 2012
www.richtek.com
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet RT8035.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| RT8035 | 1.25MHz Synchronous Step-Down Converter | Richtek |
| RT8036 | One Step Down DC/DC Converter and Four Linear Regulators | Richtek |
| 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 |