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PDF AP2066ES6-ADJ Data sheet ( Hoja de datos )
| Número de pieza | AP2066ES6-ADJ | |
| Descripción | Micropower Synchronous Step-Up Converter | |
| Fabricantes | Chipown | |
| Logotipo |  |
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AP2066
General Description
The AP2066 is synchronous, fixed frequency, step-up
DC/DC converters delivering high efficiency in a 6-
lead SOT package. Capable of supplying 3.3V at
100mA from a single AA cell input, the device contain
an internal NMOS switch and PMOS synchronous
rectifier. A switching frequency of 1.2MHz minimizes
solution footprint by allowing the use of tiny, low
profile inductors and ceramic capacitors. The current
mode PWM design is internally compensated, reducing
external parts count. The AP2066 features continuous
switching at light loads. Anti-ringing control circuitry
reduces EMI concerns by damping the inductor in
discontinuous mode, and the device features low
shutdown current of under 1uA. The device is available
in the small profile (1.1mm) SOT-23 package.
Applications
Cellular and Smart Phones
Microprocessors and DSP Core Supplies
Wireless and DSL Modems
Chipown
1.2 MHz, Micropower
Synchronous Step-Up Converter
MP3 Player
Digital Still and Video Cameras
Portable Instruments
Features
High Efficiency: Up to 92%
1.2MHz Constant Switching Frequency
3.3V Output Voltage at IOUT=100mA from a Single
AA Cell; 5.0V Output Voltage at IOUT=500mA
from one Li battery.
Low Start-up Voltage: 1.0V
Integrated main switch and synchronous rectifier.
No Schottky Diode Required
2.5V to 5V Output Voltage Range
Automatic Pulse Skipping Mode Operation
Tiny External Components
<1µA Shutdown Current
Anti-ringing Control Reduces EMI
Space Saving 6-Pin SOT23 Package
Typical Application Circuit
Figure 1. Basic Application Circuit with AP2066
Adjustable Version
Efficiency vs Output Current
100
90
80
70
60
50
40
30
20
10
0
1
η vs Io(VO=5V)
10 100
Io(mA)
VIN=1.8V
VIN=2.4V
VIN=3.6V
VIN=4.2V
1000
8/F, ChuangYuan Building No.21-1 Changjiang Road, Wuxi New Destrict Tel: +86(510)8521-7718 http://www.chipown.com.cn
1
1 page  
AP2066
Pin Description
PIN NAME
1 CE
2 GND
3 GND
4 LX
5 VDD
6 FB
Chipown
FUNCTION
Chip Shutdown Signal Input. Logic high is normal operation mode, Logic Low is
Shutdown.
Ground Pin
Ground Pin
Power Switch Pin. It is the switch node connection to Inductor.
Power Output Pin.
Feedback Input Pin. Connect FB to the center point of the external resistor divider. The
feedback threshold voltage is 1.23V.
Functional Block Diagram
Figure 2. AP2066 Block Diagram
8/F, ChuangYuan Building No.21-1 Changjiang Road, Wuxi New Destrict Tel: +86(510)8521-7718 http://www.chipown.com.cn
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet AP2066ES6-ADJ.PDF ] | |
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