MIC2287C-24BMLTR datasheet, PDF

Datasheet> All Categories > Analog mixed-signal IC> Drivers and interfaces> MIC2287C-24BMLTR

MIC2287C-24BMLTR: DescriptionLED Driver, 6-Segment, 2 X 2 MM, MLF-8; CategoryAnalog mixed-signal IC Drivers and interfaces; File Size894KB，9 Pages; ManufacturerMicrel ( Microchip ); Websitehttps://www.microchip.com

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MIC2287C-24BMLTR Overview

LED Driver, 6-Segment, 2 X 2 MM, MLF-8

MIC2287C-24BMLTR Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	Micrel ( Microchip )
Parts packaging code	DFN
package instruction	2 X 2 MM, MLF-8
Contacts	8
Manufacturer packaging code	MLF
Reach Compliance Code	not_compliant
ECCN code	EAR99
Interface integrated circuit type	LED DISPLAY DRIVER
JESD-30 code	S-XDSO-N8
JESD-609 code	e0
length	2 mm
Humidity sensitivity level	1
Multiplex display function	NO
Number of functions	1
Number of segments	6
Number of terminals	8
Maximum operating temperature	105 °C
Minimum operating temperature	-40 °C
Package body material	UNSPECIFIED
encapsulated code	HVSON
Package shape	SQUARE
Package form	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	240
Certification status	Not Qualified
Maximum seat height	0.95 mm
Maximum supply voltage	10 V
Minimum supply voltage	2.5 V
Nominal supply voltage	3.6 V
surface mount	YES
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn80Pb20)
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	2 mm
minfmax	1.35 MHz
Base Number Matches	1

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MIC2287C

Micrel

MIC2287C

1.2MHz PWM White LED Driver with OVP in

2mm × 2mm MLF™ and Thin SOT-23

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.

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:

- Cell phones

- PDAs

- GPS systems

- Digital cameras

- MP3 players

- IP phones

• LED ﬂashlights

Typical Application

10½H

CMDSH-3

10½H

CMDSH-3

MIC2287CBD5

VIN

GND

1-Cell

Li Ion

1½F

MIC2287C-34BML

0.22½F

95mV

6.3½

1-Cell

Li Ion

1½F

VIN

OVP

GND

95mV

0.22½F

6.3½

3-Series White LED Driver in Thin SOT-23

6-Series White LED Driver

with Output OVP in 2mm

2mm MLF™-8

MLF and

MicroLeadFrame

are trademarks of Amkor Technology, Inc.

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

February 2006

M0510-020906

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