Datasheet

CAT3649
http://onsemi.com
2
Figure 1. Typical Application Circuit
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter Rating Unit
VIN, LEDx, C1±, C2±, PWM, ADIM, CPWM voltage GND−0.3 to 6 V
VOUT GND−0.3 to 7 V
Storage Temperature Range −65 to +160
_C
Junction Temperature Range −40 to +150
_C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
Table 2. RECOMMENDED OPERATING CONDITIONS
Parameter Rating Unit
VIN 2.4 to 5.5 V
Ambient Temperature Range −40 to +85
_C
LED pin Current range 0 to 25 mA
Table 3. RECOMMENDED ADIM, PWM TIMING (For 2.4 V ≤ V
IN
≤ 5.5 V, over full ambient temperature range −40°C to +85°C.)
Parameter Symbol Conditions Min Typ Max Units
ADIM program low time T
LO
0.2 2000
ms
ADIM program high time T
HI
0.2
ms
ADIM to LED current settling time T
LED
No CPWM capacitor 40
ms
ADIM or PWM low time to shutdown T
PWRDWN
12.5 20 30 ms
PWM to VOUT delay time T
PWM VOUT
40
ms
PWM maximum frequency F
PWM MAX
200 kHz
PWM minimum duty cycle DC
PWM MIN
100 kHz PWM frequency 1 %