A6210

更新时间： 2024-11-05 06:35:23

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器
页数	文件大小	规格书
11页	441K
描述
3 A, 2 MHz Buck-Regulating LED Driver

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A6210 数据手册

A6210

3 A, 2 MHz Buck-Regulating LED Driver

Features and Benefits

Description

▪ User-configurable on-time, achieving switching

frequencies up to 2.0 MHz

The A6210 is a buck regulator that uses valley current-mode

control.Thiscontrolschemeallowsveryshortswitchon-times

to be achieved, making it ideal for applications that require

high switching frequencies combined with high input voltages

and low output LED span voltages.

▪ Brightness control through PWM of DIS pin

▪ Minimal external components required

▪ No output capacitor required

▪ Wide input voltage range: 9 to 46 V

▪ Low 0.18 V sense voltage for higher efficiency

▪ Output Current: up to 3.0 A

▪ Low standby current <100 μA

▪ Thermal shutdown

Low system cost is accomplished through high switching

frequenciesofupto2.0MHz,allowingsmallerandlowervalue

inductorsandcapacitors.Inaddition,fewexternalcomponents

are required through high levels of integration. Optimal drive

circuits minimize switching losses.

▪ Supplied in a thermally-enhanced 4 mm QFN package

Theswitchingfrequencyismaintainedconstant,astheon-time

is modulated by the input voltage. This feed-forward control

ensures excellent line correction. The on-time is set by an

external resistor pulled-up to the input supply.

Applications:

▪ High brightness LEDs

▪ LED driver modules, power supplies and lamps, such as

MR16 and MR11

Internal housekeeping and bootstrap supplies are provided

whichrequiretheadditionofonlyonesmallceramiccapacitor.A

top-off charge pump ensures correct operation at light loads.

Package 16-contact QFN (suffix EU):

Internaldiagnosticsprovidecomprehensiveprotectionagainst

input undervoltages and overtemperatures.

The device package is a 16-contact, 4 mm × 4 mm, 0.75 mm

nominal overall height QFN, with exposed pad for enhanced

thermal dissipation. It is lead (Pb) free, with 100% matte tin

leadframe plating.

4 mm × 4 mm × 0.75 mm

Typical Application

V_IN

24 V

BOOT

22 nF

VIN

68 μH

1.0 μF

150 kΩ

LED1

TON

A6210

ISEN

LED2

LED3

390 mΩ

PWM or Switch

DIS

SGND

GND

LED span voltage = 10.5 V

Suggested Parts

Average LED current = 500 mA

Peak to peak current = 60 mA

Switching frequency = 1.4 MHz

Efficiency = 90.5%

Name Description

Manufacturer - Part Number

Taiyo Yuden, TDK

1 μF, 25V, X5R or X7R ceramic, 1210

22 nF, 50V, X5R or X7R ceramic, 0805

1 A, 30 V, Schottky diode

68 μH, 1 A inductor

Taiyo Yuden - NR 6045T 680M

180 kΩ, 1%, 0805

390 mΩ, 1%, 0805

6210-DS, Rev. 1

12 3 4 5 6 7...11

中文翻译

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与A6210相关器件

型号	品牌	获取价格	描述	数据表
A6210_11	ALLEGRO	获取价格	The A6210 is a buck regulator that uses valley current-mode control.
A62-106.25MHZ	CONNOR-WINFIELD	获取价格	CMOS/TTL Output Clock Oscillator, 106.25MHz Nom, DIP-8
A6210GEUTR-T	ALLEGRO	获取价格	3 A, 2 MHz Buck-Regulating LED Driver
A6211	ALLEGRO	获取价格	Constant-Current 3-Ampere PWM Dimmable Buck Regulator LED Driver
A6211GLJTR-T	ALLEGRO	获取价格	暂无描述
A-6212-93080-03(SE122)	ETC	获取价格	PAPER ROLL SE122
A6213	ALLEGRO	获取价格	The A6213 is a single IC switching regulator that provides constant-current output to driv
A6214	ALLEGRO	获取价格	2 A maximum output over operating temperature range
A6214KLKTR-T	ALLEGRO	获取价格	2 A maximum output over operating temperature range
A6216	ALLEGRO	获取价格	2 A maximum output over operating temperature range

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