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| 型号： | LM26480SQX-BF/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 2.4 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, QCC24 |
| 封装： | 4 X 4 MM, 0.80 MM HEIGHT, LLP-24 |
| 文件页数： | 1/30页 |
| 文件大小： | 2447K |
| 代理商： | LM26480SQX-BF/NOPB |
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LM26480
March 29, 2010
Externally Programmable Dual High-Current Step-Down
DC/DC and Dual Linear Regulators
General Description
The LM26480 is a multi-functional Power Management Unit,
optimized for low-power digital applications. This device inte-
grates two highly efficient 1.5A step-down DC/DC converters
and two 300 mA linear regulators. The LM26480 is offered in
a tiny 4 x 4 x 0.8mm LLP-24 pin package.
Key Specifications
Step-Down DC/DC Converter (Buck)
■ 1.5A output current
■ V
OUT from:
— Buck1 : 0.8V–2.0V @ 1.5A
— Buck2 : 1.0V–3.3V @ 1.5A
■ Up to 96% efficiency
■ ±3% FB voltage accuracy
■ 2 MHz PWM switching frequency
■ PWM - PFM automatic mode change under low loads
■ Automatic soft start
Linear Regulators (LDO)
■ V
OUT of 1.0V–3.5V
■ ±3% FB voltage accuracy
■ 300 mA output current
■ 25 mV (typ) dropout
Features
■ Compatible with advanced applications processors and
FPGAs
■ 2 LDOs for powering Internal processor functions and I/Os
■ Precision internal reference
■ Thermal overload protection
■ Current overload protection
■ 24-lead 4 × 4 × 0.8mm LLP package
■ External Power-On-Reset function for Buck1 and Buck2
■ Undervoltage lock-out detector to monitor input supply
voltage
Applications
■ Core digital power
■ Applications processors
■ Peripheral I/O power
Typical Application Circuit
30040401
2010 National Semiconductor Corporation
300404
www.national.com
LM26480
Externally
Programmable
Dual
High-Current
Step-Down
DC/DC
and
Dual
Linear
Regulators
相关PDF资料 |
PDF描述 |
|---|---|
| LM2661M/NOPB | SWITCHED CAPACITOR CONVERTER, 80 kHz SWITCHING FREQ-MAX, PDSO8 |
| LM2660MMX/NOPB | SWITCHED CAPACITOR CONVERTER, 40 kHz SWITCHING FREQ-MAX, PDSO8 |
| LM2661MM/NOPB | SWITCHED CAPACITOR CONVERTER, 80 kHz SWITCHING FREQ-MAX, PDSO8 |
| LM2661MMX/NOPB | SWITCHED CAPACITOR CONVERTER, 80 kHz SWITCHING FREQ-MAX, PDSO8 |
| LM2661MX/NOPB | SWITCHED CAPACITOR CONVERTER, 80 kHz SWITCHING FREQ-MAX, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM26484 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Power Management Unit |
| LM26484SQ | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Power Management Unit |
| LM26484SQ/NOPB | 功能描述:PMIC 解决方案 RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| LM26484SQE | 制造商:Texas Instruments 功能描述:Power Management Unit 24-Pin LLP EP T/R 制造商:Texas Instruments 功能描述:PMU MULTI FUNCTN PRINTERS 24LLP |
| LM26484SQE/NOPB | 功能描述:PMIC 解决方案 RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
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