MIC2291-15YML datasheet, PDF - EEWORLD Datasheet

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MIC2291-15YML: Description1.2A PWM Boost Regulator Photo Flash LED Driver; CategoryAnalog mixed-signal IC Drivers and interfaces; File Size703KB，10 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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MIC2291-15YML Overview

1.2A PWM Boost Regulator Photo Flash LED Driver

MIC2291-15YML Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
package instruction	HVSON,
Reach Compliance Code	compli
ECCN code	EAR99
Interface integrated circuit type	LED DISPLAY DRIVER
JESD-30 code	S-XDSO-N8
JESD-609 code	e3
length	2 mm
Humidity sensitivity level	1
Multiplex display function	NO
Number of functions	1
Number of segments	3
Number of terminals	8
Maximum operating temperature	125 °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)	260
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	AUTOMOTIVE
Terminal surface	MATTE TIN
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	40
width	2 mm
Base Number Matches	1

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MIC2291

1.2A PWM Boost Regulator Photo Flash

LED Driver

General Description

The MIC2291 is a 1.2MHz Pulse Width Modulation (PWM),

boost-switching regulator that is optimized for high-current,

white LED photo

ﬂash

applications. With a guaranteed

switch current of 1.2A, the MIC2291 easily drives a string

of 3 white LEDs in series at 100mA, ensuring a high level

of brightness and eliminating several ballast resistors.

The MIC2291 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, in contrast 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 MIC2291 is available with 2 levels of over-voltage

protection, 15V, and 34V. This allows designers to choose

the smallest possible external components with the

appropriate voltage ratings for their applications.

The MIC2291 is available in low-proﬁle, Thin SOT23 5-pin

and 8-pin 2mm × 2mm MLF

package options. The

MIC2291 has a junction temperature range of –40°C to

+125°C.

Data sheets and 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

1.2A switch current

1.2MHz PWM operation

95mV feedback voltage

Overvoltage protection (OVP)

– Options for 15V and 34V

Stable with ceramic capacitors

<1% line and load regulation

1µA shutdown current

Over temperature protection

UVLO

Low-proﬁle Thin SOT23-5 package option

2mm × 2mm MLF

package option

–40°C to +125°C junction temperature range

Applications

•

Photo Flash LED driver

Cell phones

PDAs

GPS systems

Digital cameras

IP phones

LED

ﬂashlights

Typical Application

10µH

100mA

10µH

100mA

MIC2291xD5

MIC2291-15xML

1-Cell

Li Ion

3V to 4.2V

VIN

GND

VIN

OVP

GND

95mV

0.22µF

1µF

0.22µF

ceramic

95mV

1-Cell

Li Ion

3V to 4.2V

1µF

Thin SOT23 Flash LED Driver

PowerPAK is a trademark of Siliconix, Inc.

MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.

2mm x 2mm Flash LED Driver with Output OVP

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

408

) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

May 2007

M9999-051507

MIC2291-15YML Related Products

	MIC2291-15YML	MIC2291	MIC2291BD5	MIC2291_07	MIC2291YD5	MIC2291-15BML	MIC2291-34YML	MIC2291-34BML
Description	1.2A PWM Boost Regulator Photo Flash LED Driver	1.2A PWM Boost Regulator Photo Flash LED Driver	1.2A PWM Boost Regulator Photo Flash LED Driver	1.2A PWM Boost Regulator Photo Flash LED Driver	1.2A PWM Boost Regulator Photo Flash LED Driver	1.2A PWM Boost Regulator Photo Flash LED Driver	1.2A PWM Boost Regulator Photo Flash LED Driver	1.2A PWM Boost Regulator Photo Flash LED Driver
Is it Rohs certified?	conform to	-	incompatible	-	conform to	incompatible	conform to	incompatible
package instruction	HVSON,	-	VSSOP, TSOP5/6,.11,37	-	LEAD FREE, TSOT-23, 5 PIN	HVSON, SOLCC8,.08,20	2 X 2 MM, LEAD FREE, MLF-8	HVSON, SOLCC8,.08,20
Reach Compliance Code	compli	-	compli	-	compli	compli	compli	compli
ECCN code	EAR99	-	EAR99	-	EAR99	EAR99	EAR99	EAR99
Interface integrated circuit type	LED DISPLAY DRIVER	-	LED DISPLAY DRIVER	-	LED DISPLAY DRIVER	LED DISPLAY DRIVER	LED DISPLAY DRIVER	LED DISPLAY DRIVER
JESD-30 code	S-XDSO-N8	-	R-PDSO-G5	-	R-PDSO-G5	S-XDSO-N8	S-XDSO-N8	S-XDSO-N8
JESD-609 code	e3	-	e0	-	e3	e0	e3	e0
length	2 mm	-	2.9 mm	-	2.9 mm	2 mm	2 mm	2 mm
Humidity sensitivity level	1	-	1	-	1	1	1	1
Multiplex display function	NO	-	NO	-	NO	NO	NO	NO
Number of functions	1	-	1	-	1	1	1	1
Number of segments	3	-	3	-	3	3	3	3
Number of terminals	8	-	5	-	5	8	8	8
Maximum operating temperature	125 °C	-	125 °C	-	125 °C	125 °C	125 °C	125 °C
Minimum operating temperature	-40 °C	-	-40 °C	-	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	UNSPECIFIED	-	PLASTIC/EPOXY	-	PLASTIC/EPOXY	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
encapsulated code	HVSON	-	VSSOP	-	VSSOP	HVSON	HVSON	HVSON
Package shape	SQUARE	-	RECTANGULAR	-	RECTANGULAR	SQUARE	SQUARE	SQUARE
Package form	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	-	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	-	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	260	-	240	-	260	240	260	240
Certification status	Not Qualified	-	Not Qualified	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	0.95 mm	-	1 mm	-	1 mm	0.95 mm	0.95 mm	0.95 mm
Maximum supply voltage	10 V	-	10 V	-	10 V	10 V	10 V	10 V
Minimum supply voltage	2.5 V	-	2.5 V	-	2.5 V	2.5 V	2.5 V	2.5 V
Nominal supply voltage	3.6 V	-	3.6 V	-	3.6 V	3.6 V	3.6 V	3.6 V
surface mount	YES	-	YES	-	YES	YES	YES	YES
Temperature level	AUTOMOTIVE	-	AUTOMOTIVE	-	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE
Terminal surface	MATTE TIN	-	Tin/Lead (Sn85Pb15)	-	MATTE TIN	Tin/Lead (Sn80Pb20)	MATTE TIN	Tin/Lead (Sn80Pb20)
Terminal form	NO LEAD	-	GULL WING	-	GULL WING	NO LEAD	NO LEAD	NO LEAD
Terminal pitch	0.5 mm	-	0.95 mm	-	0.95 mm	0.5 mm	0.5 mm	0.5 mm
Terminal location	DUAL	-	DUAL	-	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	40	-	30	-	40	30	40	30
width	2 mm	-	1.6 mm	-	1.6 mm	2 mm	2 mm	2 mm

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