Datasheet

MAX6952
4-Wire Interfaced, 2.7V to 5.5V,
4-Digit 5
✕
7 Matrix LED Display Driver
4 _______________________________________________________________________________________
Typical Operating Characteristics
(Typical application circuit, V+ = 3.3V, LED forward voltage = 2.4V, scan limit set to 4 digits, T
A
= +25°C, unless otherwise noted.)
3.80
3.90
4.10
4.00
4.20
4.30
-40 0-20 20
40
60 80
INTERNAL OSCILLATOR
FREQUENCY vs. TEMPERATURE
MAX6952 toc01
TEMPERATURE (°C)
OSCILLATOR FREQUENCY (MHz)
V+ = 3.3V
V+ = 2.7V
V+ = 5V
INTERNAL OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
MAX6952 toc02
SUPPLY VOLTAGE (V)
OSCILLATOR FREQUENCY (MHz)
4.53.5
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
3.6
2.5 5.5
0
0.5
1.5
1.0
2.0
2.5
0
400
200
600
800
INTERNAL OSCILLATOR
WAVEFORM AT OSC
MAX6952 toc03
TIMELINE (ns)
VOLTAGE AT OSC (V)
80
85
95
90
100
105
2.5 3.53.0 4.0 4.5 5.0 5.5
DEAD CLOCK OSCILLATOR FREQUENCY
vs. SUPPLY VOLTAGE
MAX6952 toc04
SUPPLY VOLTAGE (V)
OSCILLATOR FREQUENCY (kHz)
0.95
0.97
0.96
0.99
0.98
1.00
1.01
2.5 3.5 4.03.0 4.5 5.0 5.5
SEGMENT SOURCE CURRENT
vs. SUPPLY VOLTAGE
MAX6952 toc05
SUPPLY VOLTAGE (V)
CURRENT NORMALIZED TO 40mA
WAVEFORMS AT O2 (PIN 3) AND O14
(PIN 28) 15/16 INTENSITY
GROUND FOR
ANODE
(PIN O14)
MAX6952 toc06
GROUND FOR
CATHODE
(PIN O3) 220 s/div