Datasheet > NCP5030MTTXG

NCP5030MTTXG

更新时间： 2024-01-03 09:18:11

品牌	Logo	应用领域
安森美 - ONSEMI		转换器电池驱动升压转换器
页数	文件大小	规格书
14页	129K
描述
Buck−Boost Converter to Drive a Single LED from Li−Ion or 3 Alkaline Batteries

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NCP5030MTTXG 数据手册

NCP5030

Buck−Boost Converter

to Drive a Single LED from 1

Li−Ion or 3 Alkaline

Batteries

The NCP5030 is a fixed frequency PWM buck−boost converter

optimized for constant current applications such as driving

high−powered white LED. The buck−boost is implemented in an

H−bridge topology and has an adaptive architecture where it operates

in one of three modes: boost, buck−boost, or buck depending on the

input and output voltage condition. This device has been designed

with high−efficiency for use in portable applications and is capable

of driving in DC up to 900 mA into a high power LED for flashlight /

torch applications. To protect the device cycle−by−cycle current

limiting and a thermal shutdown circuit have been incorporated as

well as output over−voltage protection. The 700 kHz switching

frequency allows the use of a low value 4.7 mH and ceramic

capacitors. The NCP5030 is housed in a low profile space efficient

3x4 mm thermally enhanced WDFN.

http://onsemi.com

MARKING

DIAGRAM

WDFN12 3x4

MT SUFFIX

CASE 506AY

5030

ALYWG

5030

= Specific Device Code

= Assembly Location

= Wafer Lot

= Year

= Work Week

Features

= Pb−Free Package

• Efficiency: 87% at 500 mA and 3.3 V V

(Note: Microdot may be in either location)

• Internal Synchronous Rectifier, No Schottky Diodes

• Adjustable Switching Limit Current to Optimize inductor size

• 0.3 mA Shut−down Control with “True−Cut off”

• Input Voltage Range from 2.7 V to 5.5 V

PIN CONNECTIONS

• 200 mV Feedback Voltage

COMP

CTRL

11 AGND

PCA

• Output Over−voltage and Thermal Shut Down Protection

Typical Applications

• Portable Flashlight / Torch Lights

VIN

PVIN

10 mF

Vin

4.7 mH

VOUT

LX2

LX1

1 Cell

Li−Ion

Cin

1 mF

2.7 to 5.5

22 mF

(Top View)

39 k

PCA

VOUT

Exposed pad (Pin 13) is PGND

must be soldered to PCB GND plane

ENABLE

CTRL

out

NCP5030

ORDERING INFORMATION

See detailed ordering and shipping information in the package

L1: TDK RLF7030T−4R7M3R4

C1: 1 mF 6.3 V X5R

C2: 10 mF 3.6 V 0805

TDK: C2012X5R0J106MT

C3: 22 mF 6.3 V X5R

TDK: C2012X5R0J226MTJ

dimensions section on page 13 of this data sheet.

220 m

100 k

22 pF

330 pF

SENSE

Figure 1. Typical Application Circuit

Semiconductor Components Industries, LLC, 2006

Publication Order Number:

December, 2006 − Rev. 0

NCP5030/D

12 3 4 5 6 7...14

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