Micrel Inc.

MIC2841A

June 2009

2

M9999-062909-C

Ordering Information

Part Number

Mark Code

(1)

Temperature Range

Package

(2)

MIC2841AYMT

Q1Y

–40°C to +125°C

10-Pin 2mm x 2mm Thin MLF

®

Note:

1. Thin MLF

2. Thin MLF

Pin Configuration

N/C

N/C

5

1

VIN

END

RSET

GND

10 D1

D2

D3

D4

9

8

7

2

3

4

6

10-Pin 2mm x 2mm 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

END

Enable LED drivers. This pin can be used as a PWM input for dimming of WLEDs. Do not leave

floating.

3

RSET

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

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

4

GND

Ground.

5

NC

No Connect. This pin is not connected internally.

6

NC

No Connect. This pin is not connected internally.

7

D4

LED4 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

D2

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

10

D1

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

EPAD

HS PAD

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