Micrel Inc.

MIC2845A

April 2010

3

M9999-041210-C

Ordering Information

Part Number

Mark Code

(1)

LDO1

VOUT

LDO2

VOUT

Temperature Range

Package

(2)

MIC2845A-MFYMT

YNMF

2.8V

1.5V

–40°C to +125°C

14-Pin 2.5mm x 2.5mm Thin MLF

®

MIC2845A-MGYMT

YNMG

2.8V

1.8V

–40°C to +125°C

14-Pin 2.5mm x 2.5mm Thin MLF

®

MIC2845A-PGYMT

YNPG

3.0V

1.8V

–40°C to +125°C

14-Pin 2.5mm x 2.5mm Thin MLF

®

MIC2845A-PPYMT

YNPP

3.0V

3.0V

–40°C to +125°C

14-Pin 2.5mm x 2.5mm Thin MLF

®

MIC2845A-SCYMT

YNSC

3.3V

1.0V

–40°C to +125°C

14-Pin 2.5mm x 2.5mm Thin MLF

®

Notes:

1. Thin MLF

2. Thin MLF

3. Contact Micrel for other voltage options.

Pin Configuration

VIN

LDO2

EN2

D4

GND

D3

EPAD

14-Pin 2.5mm x 2.5mm Thin MLF

(Top View)

Pin Description

Pin Number

Pin Name

Pin Function

1

VIN

Voltage Input. Connect at least 1µF ceramic capacitor between VIN and GND.

2

LDO2

Output of LDO2. Connect at least 1µF ceramic output capacitor.

3

EN2

Enable Input for LDO2. Active High Input. Logic High = On; Logic Low = Off; Do not leave floating.

4

END

Enable for LED driver. Can be used as a PWM input for dimming of LEDs. Do not leave floating.

5

RSET

An internal 1.27V reference sets the nominal maximum LED current. Example, apply a 20.5kΩ

resistor between RSET and GND to set LED current to 20mA at 100% duty cycle.

6

D1

LED1 driver. Connect LED anode to VIN and cathode to this pin.

7

D2

LED2 driver. Connect LED anode to VIN and cathode to this pin.

8

D3

LED3 driver. Connect LED anode to VIN and cathode to this pin.

9

GND

Ground.

10

D4

LED4 driver. Connect LED anode to VIN and cathode to this pin.

11

D5

LED5 driver. Connect LED anode to VIN and cathode to this pin.

12

D6

LED6 driver. Connect LED anode to VIN and cathode to this pin.

13

EN1

Enable Input for LDO1. Active High Input. Logic High = On; Logic Low = Off; Do not leave floating.

14

LDO1

Output of LDO1. Connect at least 1µF ceramic output capacitor.

EPAD

HS PAD

Heat sink pad. Not internally connected. Connect to ground.