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參數資料
| 型號： | LP5952TL-1.4 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 350mA Dual Rail Linear Regulator |
| 中文描述： | 1.4 V FIXED POSITIVE REGULATOR, PBGA5 |
| 封裝： | LEAD FREE, SMD, 5 PIN |
| 文件頁數： | 1/16頁 |
| 文件大小： | 3706K |
| 代理商： | LP5952TL-1.4 |
January 2007
LP5952
350mA Dual Rail Linear Regulator
General Description
The LP5952 is a Dual Supply Rail Linear Regulator optimized
for powering ultra-low voltage circuits from a single Li-Ion cell
or 3 cell NiMH/NiCd batteries.
In the typical post regulation application V
is directly con-
nected to the battery (range 2.5V...5.5V) and V
is supplied
by the output voltage of the DC-DC Converter (range 0.7V...
4.5V).
The device offers superior dropout and transient features
combined with very low quiescent currents. In shutdown
mode (Enable pin pulled low) the device turns off and reduces
battery consumption to 0.1μA (typ.).
The LP5952 also features internal protection against over-
temperature, over-current and under-voltage conditions.
Performance is specified for a -40°C to 125°C junction tem-
perature range.
The LP5952 is available in a micro SMD package, lead free.
The device is available in fixed output voltages in the range
of 0.5V to 2.0V. For availability, please contact your local NSC
sales office.
Features
■
Excellent load transient response: ±15mV typical
■
Excellent line transient response: ±1mV typical
■
0.7V
≤
V
IN
≤
4.5V
■
2.5V
≤
V
BATT
≤
5.5V
■
0.5V
≤
V
OUT
≤
2.0V
■
For I
LOAD
= 350mA:
V
BATT
V
OUT(NOM)
+ 1.5V or 2.5V whichever is higher
■
For I
LOAD
= 150mA:
V
BATT
V
OUT(NOM)
+ 1.3V or 2.5V whichever is higher
■
50μA typical quiescent current from V
BATT
■
10μA typical quiescent current from V
IN
■
0.1μA typical quiescent current in shutdown
■
Guaranteed 350mA output current
■
Noise voltage = 100μV
RMS
typical
■
Operates from a single Li-Ion cell or 3 cell NiMH/NiCd
batteries
■
Only one or two tiny surface-mount external components
required depending on application
■
Small 5 bump micro SMD package, lead free
■
Thermal-overload and short-circuit protection
■
-40°C to +125°C junction temperature range
Applications
■
Mobile Phones
■
Hand-Held Radios
■
Personal Digital Assistants
■
Palm-Top PCs
■
Portable Instruments
■
Battery Powered Devices
Typical Application Circuit
20208501
FIGURE 1: Typical Application Circuit with DC-DC Converter as Pre-Regulator for V
IN
2007 National Semiconductor Corporation
202085
www.national.com
L
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| LP5952TL-1.8 | 350mA Dual Rail Linear Regulator |
| LP5952TL-2.0 | 350mA Dual Rail Linear Regulator |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LP5952TL-2.0 | 制造商:Texas Instruments 功能描述:LDO Regulator Pos 2V 0.35A 5-Pin uSMD T/R |
| LP5952TL-2.0/NOPB | 功能描述:低壓差穩壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP5952TLX-0.7/NOPB | 功能描述:低壓差穩壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP5952TLX-1.0/NOPB | 功能描述:低壓差穩壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP5952TLX-1.2/NOPB | 功能描述:低壓差穩壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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