Micrel, Inc.

MIC2289C

September 2006

2

M9999-090706

Ordering Information

Part Number

Marking

Code

Overoltage

Protection

Junction

Temp. Range

Package

Lead Finish

MIC2289CBD5

SGAA|

N/A

–40°C to +125°C

5-Pin Thin SOT-23

Standard

MIC2289CYD5

SGAA|

N/A

–40°C to +125°C

5-Pin Thin SOT-23

Pb-Free

MIC2289C-15BML

SLA

15V

–40°C to +125°C

8-Pin 2mm x 2mm MLF

®

Standard

MIC2289C-15YML

SLA

15V

–40°C to +125°C

8-Pin 2mm x 2mm MLF

®

Pb-Free

MIC2289C-24BML

SLB

24V

–40°C to +125°C

8-Pin 2mm x 2mm MLF

®

Standard

MIC2289C-24YML

SLB

24V

–40°C to +125°C

8-Pin 2mm x 2mm MLF

®

Pb-Free

MIC2289C-34BML

SLC

34V

–40°C to +125°C

8-Pin 2mm x 2mm MLF

®

Standard

MIC2289C-34YML

SLC

34V

–40°C to +125°C

8-Pin 2mm x 2mm MLF

®

Pb-Free

Note

: Marking bars may not be to scale.

Pin Configuration

FB GND

EN

VIN

SW

3

1

5

2

4

SGAA

Denotes

Pb-Free

Denotes

MIC2289C

OUT

VIN

EN

AGND

PGND

SW

FB

NC

1

2

3

4

8

7

6

5

EP

SLA

Denotes Pb-Free

Denotes MIC2289C

5- Pin Thin SOT-23 (D5)

8-Pin MLF

(Top View)

Fused Lead Frame

Pin Description

Pin Number

TSOT-23-5

Pin Number

MLF

Pin Name

Pin Name

1

7

SW

Switch node (Input): Internal power BIPOLAR collector.

2

―

GND

Ground (Return): Ground.

3

6

FB

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

cathode of the LED to this pin. A resistor from this pin to ground

sets the LED current.

4

3

EN

Enable (Input): Logic high enables regulator. Logic low shuts

down regulator.

5

2

VIN

Supply (Input): 2.7V to 8V for internal circuitry.

―

1

OUT

Output Pin and Overvoltage Protection (Output): Connect to the

output capacitor and LEDs.

―

4

AGND

Analog ground.

―

8

PGND

Power ground.

―

5

NC

No connect (no internal connection to die).

―

EP

GND

Ground (Return): Exposed backside pad.