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參數(shù)資料
| 型號： | LP3907SQX-JIXI |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.5 A DUAL SWITCHING CONTROLLER, 2100 kHz SWITCHING FREQ-MAX, QCC24 |
| 封裝： | 4 X 4 MM, 0.8 MM HEIGHT, LLP-24 |
| 文件頁數(shù)： | 1/44頁 |
| 文件大小： | 3058K |
| 代理商： | LP3907SQX-JIXI |
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December 12, 2007
LP3907
Dual High-Current Step-Down DC/DC and Dual Linear
Regulator with I2C Compatible Interface
General Description
The LP3907 is a multi-function, programmable Power Man-
agement Unit, optimized for low power FPGAs, microproces-
sors and DSPs. This device integrates two highly efficient 1A/
600mA step-down DC/DC converters with dynamic voltage
management (DVM), two 300mA linear regulators and a
400kHz I2C compatible interface to allow a host controller ac-
cess to the internal control registers of the LP3907. The
LP3907 additionally features programmable power-on se-
quencing. Package options include a tiny 4 x 4 x 0.8mm LLP
24–pin package and an even smaller 2.5 x 2.5mm micro SMD
25-bump package.
Key Specifications
Step-Down DC/DC Converter (Buck)
■ 1A/600mA output current
■ Programmable V
OUT from:
— Buck1 : 0.8V–2.0V @ 1A
— Buck2 : 1.0V–3.5V @ 600mA
■ Up to 96% efficiency
■ 2.1MHz PWM switching frequency
■ PWM - PFM automatic mode change under low loads
■ ±3% output voltage accuracy
■ Automatic soft start
Linear Regulators (LDO)
■ Programmable V
OUT of 1.0V–3.5V
■ ±3% output voltage accuracy
■ 300mA output current
■ 30mV (typ) dropout
Features
■ Compatible with advanced applications processors and
FPGAs
■ 2 LDOs for powering Internal processor functions and I/Os
■ High speed serial interface for independent control of
device functions and settings
■ Precision internal reference
■ Thermal overload protection
■ Current overload protection
■ 24-lead 4 × 4 × 0.8mm LLP or 25–bump 2.5 x 2.5mm micro
SMD package
■ Software Programmable Regulators
■ External Power-on-reset function for Buck1 and Buck2
(i.e., Power Good with delay function)
■ Undervoltage lock out detector to monitor input supply
voltage
Applications
■ FPGA, DSP core power
■ Applications processors
■ Peripheral I/O power
2007 National Semiconductor Corporation
300178
www.national.com
LP3907
Dual
High-Current
Step-Down
DC/DC
and
Dual
Linear
Regulator
with
I2C
Compatible
Interface
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LP3907SQX-JXQX | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C Compatible Interface |
| LP3907SQX-JXQX/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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel |
| LP3907SQX-PFX6W/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 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3907SQX-PJXIX/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 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3907SQX-PXPP | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C Compatible Interface |
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