MIC2287CBD5 Micrel Inc, MIC2287CBD5 Datasheet

MIC2287CBD5

Manufacturer Part Number

MIC2287CBD5

Description

IC LED DRIVR WHITE BCKLGT TSOT-5

Manufacturer

Micrel Inc

Type

Backlight, White LEDr

Datasheet

1.MIC2287C-15YML_TR.pdf (9 pages)

Specifications of MIC2287CBD5

Constant Current

Yes

Topology

PWM, Step-Up (Boost)

Number Of Outputs

Internal Driver

Yes

Type - Primary

Backlight, Flash/Torch

Type - Secondary

White LED

Frequency

1.05MHz ~ 1.35MHz

Voltage - Supply

2.5 V ~ 10 V

Mounting Type

Surface Mount

Package / Case

TSOT-23-5, TSOT-5, TSOP-5

Operating Temperature

-40°C ~ 105°C

Current - Output / Channel

20mA

Internal Switch(s)

Yes

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Voltage - Output

Efficiency

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MIC2287CBD5

Manufacturer:

MICREL

Quantity:

704

Company:

Meier Automation Equipment Co., Limited

Part Number:

MIC2287CBD5

Manufacturer:

MICREL/麦瑞

Quantity:

20 000

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General Description

The MIC2287C is a 1.2MHz pulse width modulated (PWM),

boost-switching regulator that is optimized for constant-cur-

rent, white LED driver applications. With a maximum output

voltage of 37V and a switch current of over 500mA, the

MIC2287C easily drives a string of up to 6 white LEDs in

series, ensuring uniform brightness and eliminating several

ballast resistors.

The MIC2287C implements a constant frequency, 1.2MHz

PWM control scheme. The high frequency PWM operation

saves board space by reducing external component sizes.

The added beneﬁt of the constant frequency PWM scheme

as opposed to variable frequency topologies is much lower

noise and input ripple injected back to the battery source.

To optimize efﬁciency, the feedback voltage is set to only

95mV. This reduces the power dissipation in the current set

resistor and allows the lowest total output voltage, hence

minimal current draw from the battery.

The MIC2287C is available with 3 levels of overvoltage protec-

tion, 15V, 24V, and 34V. This allows designers to choose the

smallest possible external components with the appropriate

voltage ratings for their applications.

The MIC2287C is available in low proﬁle Thin SOT-23 5-

lead and an 8-lead 2mm × 2mm MLF™ package options.

The MIC2287C has a junction temperature range of –40°C

to +105°C.

All support documentation can be found on Micrel’s web site

at www.micrel.com.

Typical Application

MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc.

February 2006

MIC2287C

1-Cell

Li Ion

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

3-Series White LED Driver in Thin SOT-23

1�F

MIC2287CBD5

VIN

10�H

GND

95mV

CMDSH-3

6.3�

0.22�F

Features

• 2.5V to 10V input voltage

• Output voltage up to 34V

• Over 500mA switch current

• 1.2 MHz PWM operation

• 95mV feedback voltage

• Output Overvoltage Protection (OVP)

• Options for 15V, 24V, and 34V OVP

• Over-temperature protection

• UVLO

• Low proﬁle Thin SOT-23-5 package option

• 8-lead 2mm × 2mm MLF™ package option

• –40°C to +105°C junction temperature range

• For higher performance speciﬁcations see the MIC2287

Applications

• White LED driver for backlighting:

• LED ﬂashlights

1.2MHz PWM White LED Driver with OVP in

1-Cell

Li Ion

- Cell phones

- PDAs

- GPS systems

- Digital cameras

- MP3 players

- IP phones

2mm × 2mm MLF™ and Thin SOT-23

with Output OVP in 2mm × 2mm MLF™-8

6-Series White LED Driver

1�F

MIC2287C

MIC2287C-34BML

VIN

10�H

GND

OVP

CMDSH-3

95mV

6.3�

M0510-020906

0.22�F

Micrel

Related parts for MIC2287CBD5

MIC2287CBD5 Summary of contents

Page 1

... The MIC2287C is available in low proﬁle Thin SOT-23 5- lead and an 8-lead 2mm × 2mm MLF™ package options. The MIC2287C has a junction temperature range of –40°C to +105°C. All support documentation can be found on Micrel’s web site at www.micrel.com. Typical Application CMDSH-3 10�H MIC2287CBD5 5 1 VIN SW 1-Cell 1�F Li Ion 4 ...

Page 2

... MIC2287C Ordering Information Marking Overvoltage Part Number Code Protection | MIC2287CBD5 SGAA | MIC2287CYD5 SGAA MIC2287C-15BML SLA 15V MIC2287C-15YML SLA 15V MIC2287C-24BML SLB 24V MIC2287C-24YML SLB 24V MIC2287C-34BML SLC 34V MIC2287C-34YML SLC 34V Pin Conﬁguration FB GND SGAA Horizontal Mark Denotes Pb-Free VIN ...

Page 3

MIC2287C Absolute Maximum Ratings Supply Voltage (V ) ..................................................... 12V IN Switch Voltage (V ) ......................................–0.3V to 37V SW Enable Pin Voltage (V ) ................................... –0 Voltage (V ) ............................................................. 6V FB Switch Current (I ) ...

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MIC2287CBD5 Micrel Inc, MIC2287CBD5 Datasheet

MIC2287CBD5

Specifications of MIC2287CBD5

Available stocks

Related parts for MIC2287CBD5

MIC2287CBD5 Summary of contents

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