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參數(shù)資料
| 型號： | TPS61120 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | SYNCHRONOUS BOOST CONVERTER WITH 1.1A SWITCH AND INTEGRATED LDO |
| 中文描述： | 同步升壓轉(zhuǎn)換器與1.1A的開關(guān)和集成穩(wěn)壓器 |
| 文件頁數(shù)： | 1/25頁 |
| 文件大小： | 462K |
| 代理商： | TPS61120 |
www.ti.com
FEATURES
Synchronous, 95% Efficient, Boost Converter
With 500-mA Output Current From 1.8-V Input
Integrated 200-mA Reverse Voltage Protected
LDO for DC/DC Output Voltage Post Regu-
lation or Second Output Voltage
40-μA (Typical) Total Device Quiescent Cur-
rent
Input Voltage Range: 1.8-V to 5.5-V
Fixed and Adjustable Output Voltage Options
up to 5.5-V
Power Save Mode for Improved Efficiency at
Low Output Power
Low Battery Comparator
Power Good Output
Low EMI-Converter (Integrated Antiringing
Switch)
Load Disconnect During Shutdown
Overtemperature Protection
Available in a Small 4mm x 4mm QFN-16 or in
a TSSOP-16 Package
DESCRIPTION
The TPS6112x devices provide a complete power
supply solution for products powered by either a
one-cell Li-Ion or Li-Polymer or a two up to 4 cells
Alkaline, NiCd or NiMH batteries. The devices can
generate two stable output voltages that are either
adjusted by an external resistor divider or fixed
internally on the chip. It also provides a simple
solution for generating 3.3 V out of a one-cell Li-Ion
or Li-Polymer battery at a maximum output current of
at least 200 mA with supply voltages down to 1.8 V.
The implemented boost converter is based on a fixed
frequency, pulse-width-modulation (PWM) controller
using a synchronous rectifier to obtain maximum
efficiency. The maximum peak current in the boost
switch is limited to a value of 1600 mA.
APPLICATIONS
All Single Cell Li or Dual Cell Battery or USB
Powered Products as MP-3 Player, PDAs, and
Other Portable Equipment
Dual Input or Dual Output Mode
Simple Li-Ion to 3.3-V Conversion
OFF
ON
OFF
ON
OFF
ON
VBAT
LBI
SKIPEN
EN
LDOEN
SWN
SWP
VOUT
FB
PGOOD
LBO
LDOIN
LDOOUT
LDOSENSE
GND
PGND
Control
Inputs
Control
Outputs
V
out1
V
out2
TPS61120
Battery
10
H
10
F
100
F
2.2
F
TPS61120
TPS61122, TPS61121
SLVS427C–JUNE 2002–REVISED APRIL 2004
SYNCHRONOUS BOOST CONVERTER WITH 1.1A SWITCH AND INTEGRATED LDO
The converter can be disabled to minimize battery
drain. During shutdown, the load is completely dis-
connected from the battery. A low-EMI mode is
implemented to reduce ringing and in effect lower
radiated electromagnetic energy when the converter
enters the discontinuous conduction mode. A power
good output at the boost stage simplifies control of
any connected circuits like cascaded power supply
stages or microprocessors.
The built-in LDO can be used for a second output
voltage derived either from the boost output or
directly from the battery. The LDO can be enabled
separately i.e., using the power good of the boost
stage. The device is packaged in a 16-pin QFN
package measuring 4 mm x 4 mm (RSA) or in a
16-pin TSSOP (PW) package.
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 2002–2004, Texas Instruments Incorporated
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS61120EVM-205 | 功能描述:電源管理IC開發(fā)工具 TPS61120-205 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS61120PW | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj Hi-Eff Boost Cnvrtr w/200mA LDO RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS61120PWG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj Hi-Eff Boost Cnvrtr w/200mA LDO RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS61120PWR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj Hi-Eff Boost Cnvrtr w/200mA LDO RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS61120PWRG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj Hi-Eff Boost Cnvrtr w/200mA LDO RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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