Datasheet

10 Atmel LED Driver-MSL3162
Electrical Characteristics
(Circuit of Figure 4, V
VIN
= 5V, V
EN
= 5V, default register settings of Table 5, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C)
PARAMETER CONDITIONS AND NOTES MIN TYP MAX UNIT
DC ELECTRICAL CHARACTERISTICS
VIN operating supply voltage 4.5 5 5.5 V
VIN operating supply current Run mode; all LED strings driven 7 20 mA
VIN shutdown supply current
Sleep mode; SDA, SCL, AD0, AD1, PWM, PHI, GSC at
GND or VDD
20 25 µA
VDD regulation voltage 2.35 2.5 2.65 V
Input high voltage
SDA, SCL, AD0, AD1, PWM, PHI,
GSC
0.7 x
VDD
V
Input low voltage
SDA, SCL, AD0, AD1, PWM, PHI,
GSC
0.3 x
VDD
V
Input high voltage EN 1.2 V
Input low voltage EN 0.8 V
Output low voltage SDA Sinking 6mA 0.4 V
Output low voltage FLTB Sinking 6mA 0.6 V
I
LED
regulation voltage I
ILED
= 10µA 340 355 370 mV
FBI_ feedback input current 0 140 μA
FBO_ feedback output current V
FBO_
= 0 to 1.8V 0 55 μA
FBO_ feedback output current step
size
FBI_ = GND; T
A
= +25°C 2.5 3 3.6 μA
FBI_ input disable threshold (Note 10) 140 mV
LED string sink current STR0 to
STR15
R
ILED
= 34.8kΩ ±0.1%; I
STRn
= 0x20; V
STRn
= 1V;
T
A
= +25°C
28.5 30 31.5 mA
58.9 mAR
ILED
= 34.8kΩ ±0.1%; I
STRn
= 0x3F; V
STRn
= 1V;
T
A
= +25°C (Note 10)
LED string sink current matching
STR0 to STR15
R
ILED
= 34.8kΩ ±0.1%; I
STRn
= 0x20; V
STRn
= 1V; 3 %
LED string sink current maximum
STR0 to STR15
R
ILED
= 20.5kΩ; I
STRn
= 0x3F (Note 8, Note 9, Note 10) 100 mA
Short circuit fault detection
threshold
T
A
= +25°C 2.5 3.5 4.5 V
Thermal cutoff temperature (Note 10) 135 °C
Input leakage 10 µA
PARAMETER CONDITIONS AND NOTES MIN TYP MAX UNIT
AC ELECTRICAL CHARACTERISTICS
OSC initial accuracy OSCTRL = 0x04 (f
OSC
=20MHz); T
A
=25°C 18 20 22 MHz
PHI frequency 40 10000 Hz