MIC3291 Ver la hoja de datos (PDF) - Micrel

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MIC3291

1.2MHz PWM White LED Driver with Internal Schottky Diode and Single-Wire Linear Brightness Control

Micrel 

Micrel, Inc.

MIC3291

Ordering Information

Part Number1

Marking Code4 Output Voltage

Over-Voltage

Protection

Junction

Temperature Range

MIC3291-18YD6

MIC3291-25YD6

W18F

W25F

Adjustable

Adjustable

18V

−40°C to +125°C

25V

−40°C to +125°C

MIC3291-18YML

WAF

Adjustable

18V

−40°C to +125°C

MIC3291-25YML

WBF

Adjustable

25V

−40°C to +125°C

Notes:

1. Other options available. Contact Micrel Marketing for details.

2. MLF® is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.

3. MLF® ● = Pin 1 identifier.

4. Overbar ( ¯ )and Underbar symbols ( _ ) may not be to scale.

Package2,3

TSOT23-6

TSOT23-6

2mm × 2mm MLF®

2mm × 2mm MLF®

Pin Configuration

2mm × 2mm 8-Pin MLF® (ML)

(Top View)

TSOT23-6 (D6)

(Top View)

Pin Description

Pin Number

8-pin MLF®

1

2

3

4

5

Pin Number

SOT23-6

6

5

4

−

−

6

3

7

1

8

2

Pad

−

Pin Name Pin Name

OUT

VIN

DC

GND

NC

FB

SW

GND

GND

Output and over-voltage protection (output)

Supply (Input): 2.5V to 6.5V for internal circuitry.

Single pin digital control. See diagrams.

Ground (Return): Ground.

No connect (no internal connection to die)

Feedback (Input): Output voltage sense node. Connect the cathode of the LED

to this pin.

Switch Node (Input): Internal power BIPOLAR collector.

Ground (Return): Ground.

Ground (Return): Backside pad.

September 2010

2

M9999-092810

(408) 944-0800

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