PRODUCT SPECIFICATION FAN5607
REV. 1.0.1 12/2/04
5
Electrical Characteristics
V
IN
= 2.7V to 5.5V, T
A
= -40ºC to +85ºC, Test Circuit Figure 1, Unless otherwise noted.
Typical values are at T
A
= 25˚C
Parameter Conditions Min. Typ. Max. Units
Input Undervoltage Lockout 1.7 1.8 2.3 V
I
LED
Accuracy 5%
Current Matching 3 %
Output Voltage (V
OUT
= V
f
+ V
Cathode
) LED V
f
= 3.5V 3.62 V
Quiescent Current, I
Q
V
IN
= 5.5V,
I
OUT
= 0mA
130 400 µA
Shutdown Supply Current V
EN
= 0V 1 µA
Output Short Circuit Current V
IN
= 5.5V,
V
OUT
= 0V
65 mA
V
OUT
Over Voltage Protection 5.1 V
V
IN
At Mode Transition From 1X to 1.5X LED V
f
= 3.5V,
I
OUT
= 4 x 20mA
3.76 V
V
IN
At Mode Transition From 1.5X to 2X LED V
f
= 3.5V,
I
OUT
= 4 x 20mA
2.85 V
Peak Efficiency V
IN
= 3.75V,
LED V
f
= 3.5V,
I
LED
= 20mA
93 %
Oscillator Frequency 0.8 1 1.2 MHz
Thermal Shutdown Threshold 145 ºC
Thermal Shutdown Hysteresis 15 ºC
EN Logic Input High Voltage 1.6 V
EN Logic Input Low Voltage 0.4 V
EN Input Bias Current EN to V
IN
or GND -1 1 µA
I
LED
20mA≤
I
LED
20mA≤
