MIC4801 Datasheet, PDF (2/12 Pages) Micrel Semiconductor – High Efficiency 600mA Single Channel Linear WLED Driver with Ultra Fast PWM™ Control

Micrel Inc.
Ordering Information
Part Number
MIC4801YM
Pin Configuration
Temperature Range
–40°C to +125°C
MIC4801
Package
8-Pin SOIC
8-Pin SOIC (M)
(Top View)
Pin Description
Pin Number
1
2
Pin Name
VIN
EN
3
RSET
4
GND
5
D1
6
D1
7
D1
8
D1
Pin Function
Voltage Input. Connect at least 2.2µF ceramic capacitor between VIN and GND.
Enable LED drivers. This pin can be used as a PWM input for dimming of WLEDs. Do not leave
floating.
An internal 1.27V reference sets the nominal maximum WLED current. Example, apply a 12.1kΩ
resistor between RSET and GND to set LED current to 416mA at 100% duty cycle.
Ground.
LED1 driver input. Connect LED anode to VIN and cathode to this pin. All D1 pins must be
connected to the LED.
LED1 driver input. Connect LED anode to VIN and cathode to this pin. All D1 pins must be
connected to the LED.
LED1 driver input. Connect LED anode to VIN and cathode to this pin. All D1 pins must be
connected to the LED.
LED1 driver input. Connect LED anode to VIN and cathode to this pin. All D1 pins must be
connected to the LED.
January 2011
2
M9999-011811-A