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参数资料
| 型号： | LM4510SDX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | LM4510 Synchronous Step-Up DC/DC Converter with True Shutdown Isolation; Package: LLP; No of Pins: 10; Qty per Container: 4500/Reel |
| 中文描述： | 1.8 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, DSO10 |
| 封装： | 3 X 3 MM, 0.80 MM HEIGHT, LEAD FREE, LLP-10 |
| 文件页数： | 1/16页 |
| 文件大小： | 2467K |
| 代理商： | LM4510SDX/NOPB |
LM4510
January 30, 2010
Synchronous Step-Up DC/DC Converter with True
Shutdown Isolation
General Description
The LM4510 is a current mode step-up DC/DC converter with
a 1.2A internal NMOS switch designed to deliver up to 120
mA at 16V from a Li-Ion battery.
The device's synchronous switching operation (no external
Schottky diode) at heavy-load, and non-synchronous switch-
ing operation at light-load, maximizes power efficiency.
True shutdown function by synchronous FET and related cir-
cuitry ensures input and output isolation.
A programmable soft-start circuit allows the user to limit the
amount of inrush current during startup. The output voltage
can be adjusted by external resistors.
The LM4510 features advanced short-circuit protection to
maximize safety during output to ground short condition. Dur-
ing shutdown the feedback resistors and the load are discon-
nected from the input to prevent leakage current paths to
ground.
The LM4510 is available in a 10-pin thermally enhanced
Leadless Leadframe Package: LLP-10.
Features
■ 18V@80 mA from 3.2V input
■ 5V@280 mA from 3.2V input
■ No external Schottky diode required
■ 85% peak efficiency
■ Soft start
■ True shutdown isolation
■ Stable with small ceramic or tantalum output capacitors
■ Output short-circuit protection
■ Feedback fault protection
■ Input under-voltage lock out
■ Thermal shutdown
■ 0.002 A shutdown current
■ Wide input voltage range: 2.7V to 5.5V
■ 1.0 MHz fixed frequency operation
■ Low-profile 10–pin LLP package (3mm x 3mm x 0.8mm)
Applications
■ Organic LED Panel Power Supply
■ Charging Holster
■ White LED Backlight
■ USB Power Supply
■ Class D Audio Amplifier
■ Camera Flash LED Driver
Typical Application Circuit
30031001
FIGURE 1. Typical Application Circuit
2010 National Semiconductor Corporation
300310
www.national.com
LM4510
Synchronous
Step-Up
DC/DC
Converter
with
True
Shutdown
Isolation
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相关代理商/技术参数 |
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| LM4540 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:AC ’97 Codec with National 3D Sound |
| LM4540VH | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| LM4540VHX | 功能描述:IC AUDIO CODEC '97 18BIT 48LQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 编解码器 系列:- 标准包装:2,500 系列:- 类型:立体声音频 数据接口:串行 分辨率（位）:18 b ADC / DAC 数量:2 / 2 三角积分调变:是 S/N 比，标准 ADC / DAC (db):81.5 / 88 动态范围，标准 ADC / DAC (db):82 / 87.5 电压 - 电源，模拟:2.6 V ~ 3.3 V 电压 - 电源，数字:1.7 V ~ 3.3 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-WFQFN 裸露焊盘 供应商设备封装:48-TQFN-EP（7x7） 包装:带卷 (TR) |
| LM4543 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:AC ’97 Codec with National 3D Sound |
| LM4543VH | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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