MIC2808 datasheet(3/18 Pages) MICREL

Part #	MIC2808

Description	RF PA Power Management IC 2MHz, 600mA DC/DC w/DAC Input and Bypass Switch, Dual Low Noise 200mA/30mA LDO Regulators

PDF	18 Pages

Scroll/Zoom	100%

Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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3 / 18 page

Micrel, Inc.

MIC2808

July 2009

M9999-071709-A

Pin Description

Number

Pin Name

Pin Function

LDO1

Output of the LDO1.

VIN

LDO1 and LDO2 Supply Voltage. Must be connected to PIN 9 (AVIN).

EN2

Enables the LDO2 regulator. Do not leave floating.

BYP

Filter capacitor for LDO1 and LDO2 internal voltage reference. Connect a 0.1µF capacitor-to-ground.

DAC

DAC Control Input (Analog Voltage Input). Provides control of output voltage of DC/DC regulator. The

output voltage is 3x’s the DAC voltage (Ex. 0.5VDAC = 1.5VOUT) when VIN > VOUT. Bypass mode is enabled

when the DAC voltage exceeds 1.2V or VIN ≤ VOUT.

AGND

Signal ground.

No Connect.

Enables the DC/DC Regulator. Do not leave floating.

AVIN

Supply voltage for DC/DC regulator control circuitry and reference voltage circuit. Must be connected to PIN

2 (VIN).

EN1

Enables LDO1 Regulator. Do not leave floating.

PVIN

Supply Voltage: Requires bypass capacitor to ground.

Switch: Internal power MOSFET output switches of DC/DC regulator.

PGND

Power ground.

14, 15

OUT

Drain of internal bypass switch, also serves as feedback for the internal regulator.

LDO2

Output of the LDO2.

MIC2808 Datasheet(PDF) 3 Page - Micrel Semiconductor