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TS2122のメーカーはTECHSUNです、この部品の機能は「Dual High-Efficiency PWM Step-Down DC/DC Converter」です。 |
部品番号 | TS2122 |
| |
部品説明 | Dual High-Efficiency PWM Step-Down DC/DC Converter | ||
メーカ | TECHSUN | ||
ロゴ | |||
このページの下部にプレビューとTS2122ダウンロード(pdfファイル)リンクがあります。 Total 6 pages
TS2122
Dual High-Efficiency PWM Step-Down DC/DC Converter
FEATURES FOR EACH CHANNEL GENERAL DESCRIPTION
700mA Output Current
High Efficiency up to 95%
2.5V to 5.5V Input Range
Low Quiescent Current 130uA
Adjustable Output from 0.6V to VIN
No Schottky Diode Required
1.5MHz Constant Frequency Operation
Low Dropout Operation: 100% Duty Cycle
Small 12-Lead WDFN Package
RoHS Compliant and 100% Lead(Pb)-Free
APPLICATIONS
Personal Information Appliances
Mobile Phones
Wireless and DSL Modems
Portable Instruments
The TS2122 is a dual high-efficiency PWM step-
down DC-DC converter. It is capable of delivering
700mA output each channel over a wide input
voltage from 2.5V to 5.5V, the TS2122 is ideally
suited for portable electronic devices that are
powered from 1- cell Li-ion battery or from other
power sources within the range such as cellular
phones, PDAs and other handheld devices. The
switching ripple is easily smoothed-out by small
package filtering elements due to a fixed
operation frequency of 1.5MHz. This along with
small WDFN-12L 3X3 package provides small PCB
area application. Other features include soft
start, lower internal reference voltage with 2%
accuracy, over temperature protection, and over
current protection.
Figure 1 Typical Application Circuit for Adjustable Version
September, 2009 – Re1
1
TS2122
1 Page TS2122
ELECTRICAL CHARACTERISTICS
(For each output channel, VIN = 3.6V, VREF =0.6V, L=2.2uH, CIN = 2.2uH, VOUT =10uF, TA= 25°C unless otherwise specified)
PARAMETER
SYMBOL
CHANNEL 1 AND CHANNEL 2
Input Voltage Range
VIN
UVLO Threshold
VUVLO
Operating Supply Current
Shutdown Supply Current
ISUPPLY
Regulated Feedback
Voltage
VFB
Reference Voltage Line
Regulation
TEST CONDITIONS
VHYSTERESIS =100mV
VFB =0.5V or VOUT =90%, ILoad =0
VEN =0V, VIN =4.2V
Ta =25°C
0< Ta <85°C
-40°C < Ta <85°C
VIN =2.7V to 5.5V
MIN TYP MAX UNIT
2.5 5.5
2.3 2.45 2.5
130 170
0.1 1
0.588 0.6 0.612
0.5865 0.6 0.6135
0.585 0.6 0.615
0.04 0.4
V
V
µA
V
%
Regulated Output Voltage
VOUT VOUT =1.8V; IOUT =100mA
1.746 1.8 1.854 V
Peak Inductor Current
Oscillator Frequency
Rds(ON) of P-channel FET
Rds(ON) of N-channel
FET
Enable Threshold
Enable Leakage Current
LX Leakage Current
Maximum Duty Cycle
IPEAK
FOSC
VIN =3V, VFB =0.5V or VOUT
=90%,Duty Cycle<35%
VFB=0.6V or VOUT =100%
VFB=0 or VOUT =0
ISW =100mA
ISW =-100mA
VIN = 2.5V to 5.5V
VEN = 0V, VSW = 0V or 5V, VIN =
5V
1A
1.2 1.5 1.8 MHz
220 KHz
0.15 0.3 Ohm
0.15 0.3 Ohm
0.3 1
-0.1
1.5 V
0.1 µA
-1 1 uA
100 %
FUNCTION BLOCK DIAGRAM
Figure 3 Functional Block Diagram
http:/www.techsumbeam.com
3
3Pages TS2122
PACKAGE OUTLINE
DFN12 3MM X 3MM PACKAGE OUTLINE AND DIMENSIONS
DETAIL A
PIN #1 ID and Tie Bar Mark Options
http:/www.techsumbeam.com
6
6 Page | |||
ページ | 合計 : 6 ページ | ||
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PDF ダウンロード | [ TS2122 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
TS2122 | Dual High-Efficiency PWM Step-Down DC/DC Converter | TECHSUN |
TS2122AA | Dual High-Efficiency PWM Step-Down DC/DC Converter | TECHSUN |