ML4890CS-3 datasheet(1/12 Pages) MICRO-LINEAR

tên linh kiện	ML4890CS-3

Giải thích chi tiết về linh kiện	High Efficiency, Low Ripple Boost Regulator

PDF	12 Pages

Scroll/Zoom	100%

nhà sản xuất	MICRO-LINEAR [Micro Linear Corporation]

Trang chủ	http://www.microlinear.com

Logo

1 / 12 page

FEATURING

Extended

Commercial

Temperature

Range

–20°C to

70°C

for Portable

Handheld

Equipment

BLOCK DIAGRAM

April 1997

ML4890

High Efficiency, Low Ripple Boost Regulator

1

GENERAL DESCRIPTION

The ML4890 is a high efficiency, PFM (Pulse Frequency

Modulation), boost switching regulator connected in

series with an integrated LDO (Low Dropout Regulator)

that incorporates “Silent Switcher™” technology. This

technique incorporates a patented tracking scheme to

minimize the voltage drop across the LDO and increase

the total efficiency of the regulator beyond that which can

be obtained by using a discrete external LDO regulator.

The ML4890 is designed to convert single or multiple cell

battery inputs to regulated output voltages for integrated

circuits and is ideal for portable communications

equipment that cannot tolerate the output voltage ripple

normally associated with switching regulators.

An integrated synchronous rectifier eliminates the need for

an external Schottky diode and provides a lower forward

voltage drop, resulting in higher conversion efficiency.

FEATURES

s

Incorporates “Silent Switcher™” technology to deliver

very low output voltage ripple (typically 5mV)

s

Guaranteed full load start-up and operation at 1.0V

input and low operating quiescent current (<100

µA)

for extended battery life

s

Pulse Frequency Modulation and internal synchronous

rectification for high efficiency

s

Minimum external components

s

Low ON resistance internal switching MOSFETs

s

5V, 3.3V, and 3V output versions

BOOST

CONTROL

4

8

3

1

2

6

L1

SHDN

VREF

VIN

GND

FEEDBACK

VL

C1

+

–

VOUT

PWR

GND

FROM

POWER

MANAGEMENT

*CIN

VBAT

7

LDO

CONTROL

5

VBOOST

C2

VOUT

Patent Pending

*Optional

Số phần tương tự - ML4890CS-3

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Micro Linear Corporatio...	ML4894	270Kb / 10P	Synchronous Buck Controller
	ML4894ES	270Kb / 10P	Synchronous Buck Controller
	ML4895	275Kb / 10P	Synchronous Buck Controller
	ML4895ES	275Kb / 10P	Synchronous Buck Controller

More results

Mô tả tương tự - ML4890CS-3

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Micro Linear Corporatio...	ML4790	192Kb / 10P	Adjustable Output, Low Ripple Boost Regulator
Sipex Corporation	SP7648	236Kb / 12P	Low Reference High Efficiency Boost Regulator
Sipex Corporation	SP6648	260Kb / 16P	Ultra-low Quiescent Current, High Efficiency Boost Regulator
Micrel Semiconductor	MIC2250	528Kb / 13P	High Efficiency Low EMI Boost Regulator
	MIC2250	886Kb / 13P	High-Efficiency Low EMI Boost Regulator
	MIC2251	886Kb / 13P	High-Efficiency Low EMI Boost Regulator
	MIC2251_1105	875Kb / 14P	High-Efficiency Low EMI Boost Regulator
	MIC2250	882Kb / 14P	High-Efficiency Low EMI Boost Regulator
Intersil Corporation	ISL9120IR	433Kb / 13P	Compact High Efficiency Low Power Buck-Boost Regulator February 2, 2016
Renesas Technology Corp	ISL9120	685Kb / 13P	Compact High Efficiency Low Power Buck-Boost Regulator

More results

ML4890CS-3 bảng dữ liệu(PDF) 1 Page - Micro Linear Corporation

ML4890CS-3 bảng dữ liệu(HTML) 1 Page - Micro Linear Corporation

Số phần tương tự - ML4890CS-3

Mô tả tương tự - ML4890CS-3

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12

bảng dữ liệu tải về

Link URL