CAT4201TD-GT3 Datasheet, PDF (2/15 Pages) ON Semiconductor – 350mA High Efficiency Step Down LED Driver

CAT4201
ABSOLUTE MAXIMUM RATINGS⁽¹⁾
Parameters
VBAT, SW, CTRL
RSET
Switch SW peak current
Storage Temperature Range
Junction Temperature Range
Lead Temperature
Ratings
-0.3 to +40
-0.3 to +5
1
-65 to +160
-40 to +150
300
Units
V
V
A
°C
°C
°C
RECOMMENDED OPERATING CONDITIONS
Parameters
VBAT voltage ^{(2) (3)}
SW voltage
Ambient Temperature Range
LED Current
Switching Frequency
Ratings
6.5 to 36 ⁽²⁾
0 to 36
-40 to +125
50 to 350
50 to 1000
Units
V
V
°C
mA
kHz
ELECTRICAL CHARACTERISTICS
V_IN = 13V, ambient temperature of 25ºC (over recommended operating conditions unless specified otherwise)
Symbol
I_Q
I_SD
Parameter
Operating Supply Current on
VBAT pin
Idle Mode Supply Current on
VBAT pin
Conditions
CTRL = GND
Min Typ Max Units
0.4
1 mA
90
µA
V_FB
RSET Pin Voltage
I_LED
Programmed LED Current
2 LEDs with I_LED= 300mA
R1 = 33kΩ
R1 = 10kΩ
R1 = 8.25kΩ
1.15 1.2 1.25 V
100
270 300 330 mA
350
V_CTRL-FULL
V_CTRL-EN
V_CTRL-SD
CTRL Voltage for 100%
Brightness
CTRL Voltage to Enable
LEDs
CTRL Voltage to Shutdown
LEDs
I_CTRL
R_SW
T_SD
T_HYST
η
CTRL pin input bias
Switch “On” Resistance
Thermal Shutdown
Thermal Hysteresis
Efficiency
LED enable voltage threshold
LED disable voltage threshold
V_CTRL = 3V
V_CTRL = 12V
I_SW = 300mA
Typical Application Circuit
2.6 3.1 V
0.9 1.2
V
0.4 0.9
V
40
80 µA
200
0.9 1.5 Ω
150
ºC
20
ºC
86
%
Notes:
(1) Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this
specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.
(2) The VBAT pin voltage should be at least 3V greater than the total sum of the LED forward voltages in order to operate at nominal LED
current.
(3) During power-up, the slew rate of the input supply should be greater than 1µs for every 5V increase of VBAT.
Doc. No. MD-5025 Rev. E
2
© 2008 SCILLC. All rights reserved.
Characteristics subject to change without notice