CAT3648_14 Datasheet, PDF (3/13 Pages) ON Semiconductor – 4-Channel Ultra High Efficiency LED Driver

CAT3648
Table 3. ELECTRICAL OPERATING CHARACTERISTICS
(over recommended operating conditions unless specified otherwise) V_IN = 3.6 V, EN = High, T_AMB = 25°C
Symbol
Name
Conditions
Min
Typ
Max Units
I_Q
Quiescent Current
1x mode, excluding load
1.33x mode, excluding load
1.5x mode, excluding load
2x mode, excluding load
1.0
mA
1.7
2.2
2.4
I_QSHDN
I_LED−ACC
Shutdown Current
LED Current Setting
V_EN = 0 V
RSET = 3.74 kW
RSET = 7.50 kW
1
mA
20
mA
10
I_LED−ACC LED Current Accuracy
(I_LEDAVG – I_NOMINAL) / I_NOMINAL
±2
%
RSET = 4.99 kW
I_LED−DEV
V_RSET
R_OUT
LED Channel Matching
RSET Regulated Voltage
Output Resistance (open loop)
F_OSC
Charge Pump Frequency
(I_LED − I_LEDAVG) / I_LEDAVG
1x mode
1.33x mode, V_IN = 3 V
1.5x mode, V_IN = 2.7 V
2x mode, V_IN = 2.4 V
1.33x and 2x mode
1.5x mode
±1.5
%
0.58
0.6
0.62
V
0.8
W
5
5
10
0.8
1
1.3
MHz
1
1.3
1.6
I_{SC_MAX}
I_{IN_MAX}
LED_TH
Output short circuit Current Limit
Input Current Limit
1x to 1.33x or 1.33x to 1.5x or 1.5x to 2x
Transition Thresholds at any LED pin
V_OUT < 0.5 V
V_OUT > 1 V, 1x mode
50
mA
250
mA
130
mV
V_HYS
1x Mode Transition Hysteresis
400
mV
T_DF
Mode Transition Filter Delay
120
ms
R_EN/DIM
V_HI
V_LO
EN/DIM Pin
− Internal Pull−down Resistor
− Logic High Level
− Logic Low Level
100
kW
1.3
V
0.4
V
T_SD
Thermal Shutdown
150
°C
T_HYS
Thermal Hysteresis
20
°C
V_UVLO
Undervoltage lockout (UVLO) threshold
1.6
1.8
2.0
V
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
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