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參數(shù)資料
| 型號(hào)： | TEA1211 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | High efficiency auto-up/down DC/DC converter |
| 中文描述： | 高效率auto-up/down直流/直流轉(zhuǎn)換器 |
| 文件頁數(shù)： | 3/23頁 |
| 文件大?。?/td> | 125K |
| 代理商： | TEA1211 |
2003 Oct 13
3
Philips Semiconductors
Preliminary specification
High efficiency auto-up/down
DC/DC converter
TEA1211HN
1
FEATURES
I
2
C-bus programmable output voltage range of
1.5 V to 5.5 V
Single inductor topology
High efficiency up to 94 % over wide load range
Wide input range; functional from 2.55 V up to 5.5 V
1.7 A maximum input and output current
Low quiescent power consumption
600 kHz switching frequency
Four integrated very low R
DS(on)
power MOSFETs
Synchronizable to external clock
Externally adjustable current limit for protection and
efficient battery use in case of dynamic loads
Under voltage lockout
PWM-only option
Shut-down current less than 1
μ
A
32-pin small body HVQFN package.
2
APPLICATIONS
Stable output voltage from Lithium-Ion batteries
Variable voltage source for PAs (Power Amplifiers) in
cellular phones
Wireless handsets
Hand-held instruments
Portable computers.
3
GENERAL DESCRIPTION
The TEA1211HN is a fully integrated auto-up/down
DC/DC converter circuit with I
2
C-bus interface. Efficient,
compact and dynamic power conversion is achieved using
a digitally controlled pulse width and frequency modulation
like control concept, four integrated low R
DS(on)
power
switches with low parasitic capacitances and fully
synchronous rectification.
Thecombinationofauto-up/downDC/DCconversion,high
efficiency and low switching noise makes the TEA1211HN
well suited to supply a power amplifier in a cellular phone.
The output voltage can be I
2
C-bus programmed to the
exact voltage needed to achieve a certain output power
level with optimal system efficiency, thus enlarging battery
lifetime.
TheTEA1211HNoperatesat600 kHzswitchingfrequency
which enables the use of small size external components.
The switching frequency can be locked to an external high
frequency clock. Deadlock is prevented by an on-chip
under voltage lockout circuit. An adjustable current limit
enables efficient battery use even at high dynamic loads.
Optionally, the device can be kept in pulse width
modulation mode regardless of the load applied.
4
ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TEA1211HN
HVQFN32
plastic thermal enhanced very thin quad flat package; no leads;
32 terminals; body 5
×
5
×
0.85 mm
SOT617-3
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| TEA1211HN | High efficiency auto-up/down DC/DC converter |
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| TEA1504 | GreenChip SMPS control IC(SMP控制的GreenChip系列芯片) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TEA1211HN | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:High efficiency auto-up/down DC/DC converter |
| TEA1330 | 制造商:FCI 制造商全稱:First Components International 功能描述:DUAL LOW-VOLTAGE POWER AMPLIFIER |
| TEA1401T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Power plug for the universal mains |
| TEA1402/N2,112 | 功能描述:電池管理 TEA1402/DIP18/TUBE-B RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| TEA1501 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Greeny; GreenChip |
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