參數(shù)資料
型號(hào)： TPS62420DRCT
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 1.61 A DUAL SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO10
封裝： 3 X 3 MM, GREEN, PLASTIC, SON-10
文件頁(yè)數(shù)： 1/37頁(yè)
文件大?。?/td> 1020K
代理商： TPS62420DRCT
V
OUT2
SW1
FB1
SW2
ADJ2
DEF_1
OUT2
C
IN
10 F
VIN2.5V – 6V
VIN
EN_1
EN_2
MODE/
DATA
TPS62420
GND
Upto1000mA
R21
360k
R22
180k
=1.8V
L2
2.2 H
C
=22 F
C
ff2
33pF
upto600mA
R11
270k
R12
180k
V
OUT1 =1.5V
L1
2.2 H
C
OUT1 =22 F
0
10
20
30
40
50
60
70
80
90
100
0.01
0.1
1
10
100
1000
IOUT mA
Efficiency
V
IN =3.6V
MODE/DATA =0
V
OUT1 =1.5V
V
OUT2 =1.8V
www.ti.com
SLVS676C – JUNE 2006 – REVISED JUNE 2010
2.25MHz 600mA/1000mA Dual Step Down Converter In Small 3x3mm QFN Package
Check for Samples: TPS62420, TPS62421
1
FEATURES
DESCRIPTION
2
High Efficiency—up to 95%
VIN Range From 2.5 V to 6 V
The
TPS62420
device
is
a
synchronous
dual
step-down DC-DC converter optimized for battery
2.25 MHz Fixed Frequency Operation
powered
portable
applications.
It
provides
two
Output Current 600 mA and 1000 mA
independent output voltage rails powered by 1-cell
Adjustable Output Voltage From 0.6 V to VIN
Li-Ion or 3-cell NiMH/NiCD batteries. The device is
also suitable to operate from a standard 3.3V or 5V
Pin Selectable Output Voltage Supports
voltage rail.
Simple Dynamic Voltage Scaling
With an input voltage range of 2.5V to 6V, the
EasyScale Optional One Pin Serial Interface
TPS62420 is ideal to power portable applications like
for Dynamic Output Voltage Adjustment
smart phones, PDAs, and other portable equipment.
Power Save Mode at Light Load Currents
With the EasyScale serial interface the output
180° Out of Phase Operation
voltages
can
be
modified
during
operation.
It
Output Voltage Accuracy in PWM Mode ±1%
therefore supports Dynamic Voltage Scaling for low
Typical 32 mA Quiescent Current for both
power DSP and processors.
Converters
The TPS62420 operates at 2.25MHz fixed switching
100% Duty Cycle for Lowest Dropout
frequency and enter the Power Save Mode operation
at light load currents to maintain high efficiency over
Available in a 10-Pin QFN (3×3mm)
the
entire
load
current
range.
For
low
noise
applications the devices can be forced into fixed
APPLICATIONS
frequency PWM mode by pulling the MODE/DATA
Cell Phones, Smart-phones
pin
high.
In
the
shutdown
mode,
the
current
PDAs, Pocket PCs
consumption is reduced to 1.2mA. The device allows
OMAP and Low Power DSP Supply
the use of small inductors and capacitors to achieve a
small solution size.
Portable Media Players
Digital Radio
The TPS62420 is available in a 10-pin leadless
Digital Cameras
package (3×3mm QFN)
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
EasyScale, OMAP, PowerPAD are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2006–2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
相關(guān)PDF資料
PDF描述
TPS62420DRC 1.61 A DUAL SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO10
TPS62421DRCR 1.61 A DUAL SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO10
TPS62510DRCRG4 1.5 A SWITCHING REGULATOR, 1700 kHz SWITCHING FREQ-MAX, PDSO10
TPS62510DRCT 1.5 A SWITCHING REGULATOR, 1700 kHz SWITCHING FREQ-MAX, PDSO10
TPS62510DRC 1.5 A SWITCHING REGULATOR, 1700 kHz SWITCHING FREQ-MAX, PDSO10
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS62420DRCT 制造商:Texas Instruments 功能描述:DC/DC Converter IC 制造商:Texas Instruments 功能描述:IC, DUAL STEP-DOWN CONVERTER, SON-10
TPS62420DRCTG4 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 Dual Adj 600mA & 1000mA 2.25MHz RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62420EVM-167 功能描述:電源管理IC開(kāi)發(fā)工具 STEP DOWN CONVERTER RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS62420QDRCRQ1 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 Dual,Adj,600mA&1000 mA,2.25MHz Step-Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62421DRCR 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 2.25MHz 600mA/1000 mA Dual Step Down RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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