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參數(shù)資料
| 型號： | LP3906SQ-TKXII |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 2000 kHz SWITCHING FREQ-MAX, QCC24 |
| 封裝： | 5 X 4 MM, 0.80 MM HEIGHT, LLP-24 |
| 文件頁數(shù)： | 7/40頁 |
| 文件大?。?/td> | 4200K |
| 代理商： | LP3906SQ-TKXII |
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DC/DC Converters
OVERVIEW
The LP3906 supplies the various power needs of the application by means of two Linear Low Drop Regulators LDO1 and LDO2
and two Buck converters SW1 and SW2. The table here under lists the output characteristics of the various regulators.
SUPPLY SPECIFICATION
Supply
Load
Output
V
OUT Range(V)
Resolution (mV)
I
MAX
Maximum Output Current
(mA)
LDO1
analog
1.0 to 3.5
100
300
LDO2
analog
1.0 to 3.5
100
300
SW1
digital
0.8 to 2.0
50
1500
SW2
digital
1.0 to 3.5
100
1500
*For default values of the regulators, please consult Default Voltage Options Table page 3
LINEAR LOW DROP-OUT REGULATORS (LDOS)
LDO1 and LDO2 are identical linear regulators targeting ana-
log loads characterized by low noise requirements. LDO1 and
LDO2 are enabled through the ENLDO pin or through the
corresponding LDO1 or LDO2 control register. The output
voltages of both LDOs are register programmable. The de-
fault output voltages are factory programmed during Final
Test, which can be tailored to the specific needs of the system
designer.
20197822
NO-LOAD STABILITY
The LDOs will remain stable and in regulation with no external
load. This is an important consideration in some circuits, for
example CMOS RAM keep-alive applications.
LDO1 AND LDO2 CONTROL REGISTERS
LDO1 and LDO2 can be configured by means of the LDO1
and LDO2 control registers. The output voltage is pro-
grammable in steps of 100mV from 1.0V to 3.5V by program-
ming bits D4-0 in the LDO Control registers. Both LDO1 and
LDO2 are enabled by applying a logic 1 to the ENLDO1 and
ENLDO2 pin. Enable/disable control is also provided through
enable bit of the LDO1 and LDO2 control registers. The value
of the enable LDO bit in the register is logic 1 by default. The
output voltage can be altered while the LDO is enabled.
15
www.national.com
LP3906
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP3906SQX-TKXII | SWITCHING REGULATOR, 2000 kHz SWITCHING FREQ-MAX, QCC24 |
| LP3906SQDJXI | 2 A DUAL SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, QCC24 |
| LP3906SQXJXXI | 2 A DUAL SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, QCC24 |
| LP3906SQXVPFP | 2 A DUAL SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, QCC24 |
| LP3906SQXPPXP | 2 A DUAL SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, QCC24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3906SQ-TKXII/NOPB | 功能描述:低壓差穩(wěn)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(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3906SQ-VPFP | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LP3906SQ-VPFP S7002740 | 制造商:Texas Instruments 功能描述:- Tape and Reel 制造商:Texas Instruments 功能描述:Texas Instruments LP3906SQ-VPFP S7002740 |
| LP3906SQ-VPFP/NOPB | 功能描述:其他電源管理 RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel |
| LP3906SQX-DJXI | 制造商:Texas Instruments 功能描述:Power Management Unit 24-Pin LLP EP T/R |
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