Diodes PAM2846 - Manual (Page 5)

PAM2846
Document number: DSxxxxx Rev. 1 - 2
5 of 14
www.diodes.com
November 2012
© Diodes Incorporated
PAM2846
A Product Line of
Diodes Incorporated
Electrical Characteristics
(cont.)
(@T
A
= +25°C, V
IN
= ENA = 12V, R
SET
= 10kΩ, L = 22µH, unless otherwise specified.)
Parameter Test Conditions Min Typ Max Units
LED Controller Stage
Full-Scale LED_Output Current
I = 190*1.2V/R
ISET
, R
ISET
= 7.68k 30 mA
I = 190*1.2V/R
ISET
, R
ISET
= 11.3k 20 mA
I = 190*1.2V/R
ISET
, R
ISET
= 22.6k 10 mA
LED Current Matching -3 1 +3 %
ISET Voltage 1.2 V
Minimums LED Voltage 400 mV
Analog Dimming Range I = 190*1.2V/R
ISET
I/32 I mA
PWM Dimming Frequency 100 1k Hz
Fault Protection
LED_Overvoltage Threshold 4.6 4.9 5.1 V
LED_Overvoltage Hysteresis 1 V
Overvoltage Threshold 1.2 V
Overvoltage Hysteresis 80 mV
Thermal-Shutdown 150 °C
Thermal-Shutdown Hysteresis 30 °C
Control Interface
EN High 1.5 V
EN Low 0.4 V
PWMD High 1.5 V
PWMD Low 0.4 V
FSEL High V
CC
_5V -0.5 V
FSEL Midlevel 1 2 V
FSEL Low 0.5 V
EN Min Pulse Width Single Wire Dimming Low Level 0.5 µs
EN Max Pulse Width Single Wire Dimming Low Level 10 µs
EN Off Delay Single Wire Dimming Low Level 200 µs