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PDF AP2000 Data sheet ( Hoja de datos )
| Número de pieza | AP2000 | |
| Descripción | Micropower Synchronous Step-Up Converter | |
| Fabricantes | Chipown | |
| Logotipo |  |
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AP2000
General Description
The AP2000 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 AP2000 features continuous
switching at light loads. Antiringing control circuitry
reduces EMI concerns by damping the inductor in
discontinuous mode, and the device features low
shutdown current of under 1A. The device is available
in the small profile (1.1mm) SOT-23 package.
Applications
z Cellular and Smart Phones
z Microprocessors and DSP Core Supplies
z Wireless and DSL Modems
Chipown
1.2 MHz, Micropower
Synchronous Step-Up Converter
z MP3 Player
z Digital Still and Video Cameras
z Portable Instruments
Features
z High Efficiency: Up to 92%
z 1.2MHz Constant Switching Frequency
z 3.3V Output Voltage at IOUT=100mA from a Single
AA Cell; 3.3V Output Voltage at IOUT=400mA
from two AA cells
z Low Start-up Voltage: 0.85V
z Integrated main switch and synchronous rectifier.
No Schottky Diode Required
z 2.5V to 5V Output Voltage Range
z Automatic Pulse Skipping Mode Operation
z Tiny External Components
z <1µA Shutdown Current
z Antiringing Control Reduces EMI
z Space Saving 6-Pin SOT23 Package
Typical Application Circuit
Figure 1. Basic Application Circuit with AP2000
Adjustable Version
Efficie ncy v s. Output Curre nt
100
90 VIN=2.4V
80
70
VIN=1.5V
60
50 VIN=1.2V
40
30
VOUT=3.3V
20 TA=25oC
10
0
0.1 1 10 100 1000
Output Current(mA)
4/F, Building F, IT industry Park No.21 Changjiang Road, Wuxi New Destrict Tel: +86(510)8521-7718 Ver 1.1 http://www.chipown.com
1
1 page  
AP2000
Typical Performance Characteristics (Continued)
No Load Input Curre nt v s. Input Voltage
150
140
130 TVOA=U2T=53oC.3V
120 No Load
110
100
90
80
70
60
50
1.5
1.8 2.1 2.4 2.7
Input Voltage(V)
3
Chipown
3.35
3.34
3.33
3.32
3.31
3.3
3.29
3.28
3.27
3.26
3.25
-50
VOUT v s. Te mpe rature
-25 0
25 50 75
Temperature(oC)
100
4/F, Building F, IT industry Park No.21 Changjiang Road, Wuxi New Destrict Tel: +86(510)8521-7718 Ver 1.1 http://www.chipown.com
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AP2000.PDF ] | |
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