Micrel, Inc.

MIC2299

October 2007

2

M9999-101907-B

Ordering Information

Part Number

OVP

Frequency

Junction Temp. Range

Package

Lead Finish

MIC2299-15YML

15V

2MHz

–40° to +125°C

12-Pin 3x3 MLF

®

Pb-Free

Note

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

Pin Configuration

PGND

SW

PGND

SW

5

1

BRT

SS/DIM

FB

AGND

12 COMP

EN

VIN

OVP

11

10

9

2

3

4

8

6

7

EP

12-Pin 3mm x 3mm MLF (ML)

(Top View)

Pin Description

Pin Number

Pin Name

Pin Function

1

BRT

10µA current source sets the voltage on the resistor. Hence a 50K resistor

2

SS/DIM

Soft start/dimming (input) 40k

for soft-start. Clamp the pin to a known voltage to control the internal reference

voltage and hence the output current. This can also be done with a resistor to

GND

3

FB

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

to this pin.

4

AGND

Analog Ground

5,6

PGND

Power Ground

7,8

SW

Switch Node (Input): Internal power BIPOLAR collector.

9

OVP

Over-Voltage Protection (OVP): Connect to the output voltage to clamp the

maximum output voltage. A resistor divider from this pin to ground could be

used to raise the OVP level beyond 15V (max).

10

VIN

Supply (Input): 2.5V to 10V for internal circuitry.

11

EN

Enable (Input): Logic High enables regulator. Logic Low shuts down regulator.

12

COMP

Compensation pin (Input): Add external R and C to GND to stabilize the

converter.

Pad

EP

Ground (Return): Backside exposed pad.