|
|
PDF RT9266 Data sheet ( Hoja de datos )
| Número de pieza | RT9266 | |
| Descripción | Step-up DC/DC Converter | |
| Fabricantes | Richtek | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de RT9266 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
®
RT9266
Tiny Package, High Efficiency, Step-up DC/DC Converter
General D escription
The RT9266 is a compact, high eficiency, and low voltage
step-up DC/DC converter with an Adaptive Current Mode
PWM control loop, include s a n error a mplifier, ra mp
generator, comparator, switch pass element and driver in
which providing a stable and high eficient operation over
a wide ra nge of loa d currents. It operate s in sta ble
waveforms without external compensation.
The low start-up input voltage below 1V makes RT9266
suitable for 1 to 4 battery cells applications of providing
up to 300mA output current. The 450kHz high switching
rate minimized the size of external components. Besides,
the 17 μA low quiescent current together with high
efficiency maintains long battery lifetime.
The output voltage is set with two external resistors. Both
internal 2A switch and driver for driving external power
devices (NMOS orNPN) are provided.
Ordering Inf ormation
RT9266
Package Type
E : SOT-23-6
X5 : SOT-89-5
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
` RoHS compli ant and compatible with the current require-
ments of IPC/JEDEC J-ST D-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
Features
z 1.0V Low Start-up Input Voltage
z High Supply Capability to Deliver 3.3V 100mA with
1 Alkaline Cell
z 17μA Quiescent (Switch-off) Supply Current
z Zero Shutdown Mode Supply Current
z 90% Efficiency
z 450kHz Fixed Switching Frequency
z Providing Flexibility for Using Internal and External
Power Switches
z Small SOT-23-6 & SOT-89-5 Package
z RoHS Compliant and 100% Lead (Pb)-Free
Application s
z PDA
z DSC
z LCD Panel
z RF-Tags
z MP3
z Portable Instrument
z Wireless Equipment
Pin Configurations
(TOP VIEW)
FB VDD LX
654
23
EN EXT GND
SOT-23-6
GND
LX
54
1 23
EN VDD FB
SOT-89-5
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS9266-16 June 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
http://www.Datasheet4U.com
1 page  
RT9266
Absolute Maximum Ratings
z Supply Voltage ------------------------------------------------------------------------------------------------------ −0.3V to 7V
z LX Pin Switch Voltage --------------------------------------------------------------------------------------------- −0.3V to 7V
z Other I/O Pin Voltages -------------------------------------------------------------------------------------------- −0.3V to (VDD + 0.3V)
z LX Pin SwitchCurrent --------------------------------------------------------------------------------------------- 2.5A
z EXT PinDriver Current --------------------------------------------------------------------------------------------- 200mA
z Package Thermal Resistance
SOT-23-6, θJC ------------------------------------------------------------------------------------------------------- 145°C/W
SOT-89-5, θJC ------------------------------------------------------------------------------------------------------- 45°C/W
z Operating Junction Temperature -------------------------------------------------------------------------------- 125°C
z Storage Temperature Range ------------------------------------------------------------------------------------- −65°C to +150°C
NOTE:
Absolute Maximum ratings are threshold mli it values that must not be exceeded evenorf an instant under any conditions.
Moreover, such values for any two items must not be reached simultaneously. Operation above these absolute maximum
ratings may cause degradation or permanent damage to the device.These are stress ratings only and do not necessarily
imply functional operation below these limits
Recommended Operating Condition s (1)
z Junction Temperature Range -------------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range -------------------------------------------------------------------------------------- −40°C to 85°C
Electrical Chara cteristics
(VIN = 1.5V, VDD set to 3.3V, Load Current = 0, TA = 25° C, unless otherwise specified)
Parameter S
ymbol
Test Conditions
Start-UP Vo ltage
VST IL = 1mA
Operating VDD Range VDD VDD pin voltage
Shutdown Current I (VIN) I
OFF
EN Pin = 0V, VIN = 4.5V
Switch-off Current I (VDD)
ISWITCH OFF VIN = 6V
Continuous Switching Current ISWITCH
VIN = EN = 3.3V, VFB = GND
No Load Current I (VIN) I
Feedback Reference Voltage
Switching Frequency
Maximum Duty
NO LOAD
VREF
FS
DMAX
VIN = 1.5V, VOUT = 3.3V
Close Loo p, VDD = 3.3V
VDD = 3 .3V
VDD = 3.3V
LX ON Resistance
Current Limit Setting
EXT ON Resistance to VDD
EXT ON Resistance to GND
ILIMIT
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
Min Typ
-- 0. 98
2- -
-- 0. 01
-- 1 7
0.4 0. 55
-- 75(2)
1.225 1.25
425 500
85 95
-- 0 .3
1.6 2
-- 5
-- 5
Max
1.05
6
1
25
0.7
--
1.275
575
--
1.1
2.6(3)
8.5
8.5
Unit
V
V
μA
μA
mA
μA
V
kHz
%
Ω
A
Ω
Ω
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS9266-16 June 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
RT9266
Output Voltage vs. Temperature
3.34
VIN = 1.8V, VOUT = 3.3V, IOUT = 100mA
3.32
3.3
3.28
3.26
3.24
3.22
3.2
-40 -10 20 50 80 110 140
Temperature (°C)
Output Voltage vs. Temperature
5
VIN = 3V, VOUT = 5V, IOUT = 100mA
4.98
4.96
4.94
4.92
4.9
4.88
4.86
4.84
-40 -10 20 50 80 110 140
Temperature (°C)
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS9266-16 June 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet RT9266.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| RT9261 | VFM Step-up DC/DC Converter |  RICHTEK |
| RT9261A | VFM Step-up DC/DC Converter | RICHTEK |
| RT9261B | VFM STEP UP DC/DC CONVERTER |  ETC |
| RT9261B | VFM Step-up DC/DC Converter | 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 |