CAT3636 Datasheet, PDF (3/14 Pages) Catalyst Semiconductor – 6-Channel Quad-ModeTM Fractional LED Driver in TQFN3x3

CAT3636
Table 3. ELECTRICAL OPERATING CHARACTERISTICS
(over recommended operating conditions unless specified otherwise) VIN = 3.6 V, EN = High, T_AMB = 25°C
Symbol
Name
Conditions
Min
Typ
I_Q
Quiescent Current
1x mode, VIN = 4.2 V
1.5
1.33x mode, VIN = 3.3 V
2.8
1.5x mode, VIN = 2.8 V
3.7
2x mode, VIN = 2.5 V
3.8
I_QSHDN
I_LED−ACC
I_LED−DEV
Shutdown Current
LED Current Accuracy
LED Channel Matching
R_OUT
Output Resistance (open loop)
F_OSC
Charge Pump Frequency
V_EN = 0 V
1 mA ≤ I_LED ≤ 31 mA
±3
I_LED * I_LEDAVG
±1
I_LEDAVG
1x mode, I_OUT = 100 mA
0.5
1.33x mode, I_OUT = 100 mA
4.5
1.5x mode, I_OUT = 100 mA
3.5
2x mode, I_OUT = 100 mA
6
1.33x and 2x mode
1.5x mode
0.6
0.8
0.8
1.1
I_{SC_MAX}
Output short circuit Current Limit
V_OUT < 0.5 V
80
LED_TH
1x to 1.33x or 1.33x to 1.5x or 1.5x to 2x
150
Transition Thresholds at any LEDxx pin
V_HYS
T_DF
I_{IN_MAX}
R_EN/DIM
V_HI
V_LO
T_SD
T_HYS
V_UVLO
1.33x to 1x Transition Hysteresis
Transition Filter Delay
Input Current Limit
EN/DIM Pin
− Internal Pull−down Resistor
− Logic High Level
− Logic Low Level
Thermal Shutdown
Thermal Hysteresis
Undervoltage lockout (UVLO) threshold
V_IN − Highest LED V_F
V_OUT > 1 V
400
500
450
100
1.3
150
20
2
Max
1
1.1
1.4
0.4
Units
mA
mA
%
%
W
MHz
mA
mV
mV
ms
mA
kW
V
V
°C
°C
V
Table 4. RECOMMENDED EN/SET TIMING (For 2.5 ≤ VIN ≤ 5.5 V, over full ambient temperature range −40 to +85°C.)
Symbol
Name
Conditions
Min
Typ
Max
T_SETUP
EN/SET setup from shutdown
10
100 (Note 4)
T_LO
T_HI
T_OFF
T_DATADELAY
EN/SET program low time
EN/SET program high time
EN/SET low time to shutdown
EN/SET Delay to DATA
0.2
100
0.2
100
1.5
500
1000
T_RESETDELAY EN/SET Delay High to ADDRESS
2
4. If the Max value is exceeded then the user should wait 2 ms before trying to program the device again.
Units
ms
ms
ms
ms
ms
ms
Figure 2. EN/SET One Wire Addressable Timing Diagram
http://onsemi.com
3