Micrel, Inc.

MIC2205

April 2005

2

M9999-041105

www.micrel.com

Ordering Information

Part Number

Output Voltage

(1)

Junction Temp. Range

Package

Lead Finish

MIC2205-1.3YML

1.3V

–40° to +125°C

3x3 MLF-10L

Pb-free

MIC2205-1.38YML

1.38V

–40° to +125°C

3x3 MLF-10L

Pb-free

MIC2205-1.5YML

1.5V

–40° to +125°C

3x3 MLF-10L

Pb-free

MIC2205-1.58YML

1.58V

–40° to +125°C

3x3 MLF-10L

Pb-free

MIC2205-1.8YML

1.8V

–40° to +125°C

3x3 MLF-10L

Pb-free

MIC2205-1.85YML

1.85V

–40° to +125°C

3x3 MLF-10L

Pb-free

MIC2205YML

Adj.

–40° to +125°C

3x3 MLF-10L

Pb-free

Note:

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

Pin Configuration

FB

EN

AGND

LDO

BIAS

AVIN

PGND

SW

VIN

LOWQ

5

1

2

3

4

6

10

9

8

7

EP

3mm x 3mm MLF-10L (ML)

Pin Description

Pin Number

Pin Name

Pin Function

1

AGND

Analog (signal) Ground.

2

LDO

3

BIAS

Internal circuit bias supply. Must be de-coupled to signal ground with a 0.1

µF

capacitor and should not be loaded.

4

AVIN

Analog Supply Voltage (Input): Supply voltage for the analog control circuitry and

LDO input power. Requires bypass capacitor to GND.

5

FB

Feedback. Input to the error amplifier. For the Adjustable option, connect to the

external resistor divider network to set the output voltage. For fixed output

voltage.

6

EN

Enable (Input). Logic low will shut down the device, reducing the quiescent

current to less than 5

µA.

7

_____

LOWQ

Enable LDO Mode (Input): Logic low enables the internal LDO and disables the

PWM operation. Logic high enables the PWM mode and disables the LDO

mode.

8

VIN

Supply Voltage (Input): Supply voltage for the internal switches and drivers.

9

SW

Switch (Output): Internal power MOSFET output switches.

10

PGND

Power Ground.

EP

GND

Ground, backside pad.