 English |
|
|
|
|
|
|
|
| CAT3647 Datasheet, PDF (3/14 Pages) Catalyst Semiconductor – 3-Channel Ultra High Efficiency Quad-Mode™ LED Driver with 32 Dimming Levels | |||
| |||
| ◁ |
CAT3647
Table 3. ELECTRICAL OPERATING CHARACTERISTICS
(over recommended operating conditions unless specified otherwise) VIN = 3.6 V, EN = High, TAMB = 25°C
Symbol
Name
Conditions
Min
Typ
IQ
Quiescent Current
1x mode, excluding load
1.0
1.33x mode, excluding load
1.7
1.5x mode, excluding load
2.2
2x mode, excluding load
2.4
IQSHDN Shutdown Current
VEN = 0 V
ILED-ACC LED Current Setting
RSET = 3.74 kW
20
RSET = 7.50 kW
10
ILED-ACC LED Current Accuracy
(ILEDAVG â INOMINAL) / INOMINAL
±2
RSET = 4.99 kW
ILED-DEV
VRSET
ROUT
LED Channel Matching
RSET Regulated Voltage
Output Resistance (open loop)
FOSC
Charge Pump Frequency
(ILED - ILEDAVG) / ILEDAVG
1x mode
1.33x mode, VIN = 3 V
1.5x mode, VIN = 2.7 V
2x mode, VIN = 2.4 V
1.33x and 2x mode
1.5x mode
±1.5
0.58
0.6
0.8
5
5
10
0.8
1
1
1.3
ISC_MAX Output short circuit Current Limit
VOUT < 0.5 V
50
IIN_MAX Input Current Limit
VOUT > 1 V, 1x mode
250
LEDTH 1x to 1.33x or 1.33x to 1.5x or 1.5x to 2x
130
Transition Thresholds at any LED pin
VHYS
TDF
REN/DIM
VHI
VLO
TSD
THYS
VUVLO
1x Mode Transition Hysteresis
Mode Transition Filter Delay
EN/DIM Pin
â Internal Pull-down Resistor
â Logic High Level
â Logic Low Level
Thermal Shutdown
Thermal Hysteresis
Undervoltage lockout (UVLO) threshold
400
120
100
1.3
150
20
1.6
1.8
Max
1
0.62
1.3
1.6
0.4
2.0
Units
mA
mA
mA
%
%
V
W
MHz
mA
mA
mV
mV
ms
kW
V
V
°C
°C
V
http://onsemi.com
3
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese