Micrel, Inc.

MIC2290

October 2007

2

M9999-101907

Ordering Information

Part Number

Marking

Code

Output

Voltage

Overvoltage

Protection

Junction

Temp. Range

Package

Lead Finish

MIC2290BML

SRC

Adj.

34V

–40° to +125°C

8-Pin 2x2 MLF

®

Standard

MIC2290YML

SRC

Adj.

34V

–40° to +125°C

8-Pin 2x2 MLF

®

Pb-Free

Pin Configuration

OUT

VIN

EN

AGND

PGND

SW

FB

NC

1

2

3

4

8

7

6

5

8-Pin 2mm x 2mm MLF

® (ML)

(Top View)

Pin Description

Pin Number

Pin Name

Pin Function

1

OUT

Output pin (Output): Output voltage. Connect to FB resistor divider. This pin

has an internal 34V output overvoltage clamp. See “Block Diagram” and

“Applications” section for more information.

2

VIN

Supply (Input): 2.5V to 10V input voltage.

3

EN

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

4

AGND

Analog ground.

5

NC

No connect (no internal connection to die).

6

FB

Feedback (Input): Output voltage sense node. Connect feedback resistor

network to this pin.

⎟

⎠

⎞

⎜

⎝

⎛ +

=

R2

R1

1

1.24V

VOUT

.

7

SW

Switch node (Input): Internal power Bipolar collector.

8

PGND

Power ground.

EP

GND

Ground (Return): Exposed backside pad.