Datasheet CAT4201 (ON Semiconductor) - 2
| 制造商 | ON Semiconductor |
| 描述 | 350 mA High Efficiency Step Down LED Driver |
| 页数 / 页 | 13 / 2 — CAT4201. Table 1. ABSOLUTE MAXIMUM RATINGS. Parameters. Ratings. Units. … |
| 文件格式/大小 | PDF / 201 Kb |
| 文件语言 | 英语 |
CAT4201. Table 1. ABSOLUTE MAXIMUM RATINGS. Parameters. Ratings. Units. Table 2. RECOMMENDED OPERATING CONDITIONS
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CAT4201 Table 1. ABSOLUTE MAXIMUM RATINGS Parameters Ratings Units
VBAT, SW, CTRL −0.3 to +40 V RSET −0.3 to +5 V Switch SW peak current 1 A Storage Temperature Range −65 to +160 _C Junction Temperature Range −40 to +150 _C Lead Temperature 300 _C Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected.
Table 2. RECOMMENDED OPERATING CONDITIONS Parameters Ratings Units
VBAT voltage (Notes 1, 2) 6.5 to 36 (Note 1) V SW voltage 0 to 36 V Ambient Temperature Range −40 to +125 _C LED Current 50 to 350 mA Switching Frequency 50 to 1000 kHz Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. 1. The VBAT pin voltage should be at least 3 V greater than the total sum of the LED forward voltages in order to operate at nominal LED current. 2. During power−up, the slew rate of the input supply should be greater than 1 ms for every 5 V increase of VBAT.
Table 3. ELECTRICAL CHARACTERISTICS
(VIN = 13 V, ambient temperature of 25°C (over recommended operating conditions unless otherwise specified))
Symbol Parameter Conditions Min Typ Max Units
IQ Operating Supply Current on VBAT pin 0.4 1 mA ISD Idle Mode Supply Current on VBAT pin CTRL = GND 90 mA VFB RSET Pin Voltage 2 LEDs with ILED = 300 mA 1.15 1.2 1.25 V ILED Programmed LED Current R1 = 33 kW 100 mA R1 = 10 kW 270 300 330 R1 = 8.25 kW 350 VCTRL−FULL CTRL Voltage for 100% Brightness 2.6 3.1 V VCTRL−EN CTRL Voltage to Enable LEDs LED enable voltage threshold 0.9 1.2 V VCTRL−SD CTRL Voltage to Shutdown LEDs LED disable voltage threshold 0.4 0.9 V ICTRL CTRL pin input bias VCTRL = 3 V 40 80 mA VCTRL = 12 V 200 RSW Switch “On” Resistance ISW = 300 mA 0.9 1.5 W TSD Thermal Shutdown 150 °C THYST Thermal Hysteresis 20 °C h Efficiency Typical Application Circuit 86 % 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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CAT4201 Table 1. ABSOLUTE MAXIMUM RATINGS Parameters Ratings Units
VBAT, SW, CTRL −0.3 to +40 V RSET −0.3 to +5 V Switch SW peak current 1 A Storage Temperature Range −65 to +160 _C Junction Temperature Range −40 to +150 _C Lead Temperature 300 _C Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected.
Table 2. RECOMMENDED OPERATING CONDITIONS Parameters Ratings Units
VBAT voltage (Notes 1, 2) 6.5 to 36 (Note 1) V SW voltage 0 to 36 V Ambient Temperature Range −40 to +125 _C LED Current 50 to 350 mA Switching Frequency 50 to 1000 kHz Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. 1. The VBAT pin voltage should be at least 3 V greater than the total sum of the LED forward voltages in order to operate at nominal LED current. 2. During power−up, the slew rate of the input supply should be greater than 1 ms for every 5 V increase of VBAT.
Table 3. ELECTRICAL CHARACTERISTICS
(VIN = 13 V, ambient temperature of 25°C (over recommended operating conditions unless otherwise specified))
Symbol Parameter Conditions Min Typ Max Units
IQ Operating Supply Current on VBAT pin 0.4 1 mA ISD Idle Mode Supply Current on VBAT pin CTRL = GND 90 mA VFB RSET Pin Voltage 2 LEDs with ILED = 300 mA 1.15 1.2 1.25 V ILED Programmed LED Current R1 = 33 kW 100 mA R1 = 10 kW 270 300 330 R1 = 8.25 kW 350 VCTRL−FULL CTRL Voltage for 100% Brightness 2.6 3.1 V VCTRL−EN CTRL Voltage to Enable LEDs LED enable voltage threshold 0.9 1.2 V VCTRL−SD CTRL Voltage to Shutdown LEDs LED disable voltage threshold 0.4 0.9 V ICTRL CTRL pin input bias VCTRL = 3 V 40 80 mA VCTRL = 12 V 200 RSW Switch “On” Resistance ISW = 300 mA 0.9 1.5 W TSD Thermal Shutdown 150 °C THYST Thermal Hysteresis 20 °C h Efficiency Typical Application Circuit 86 % 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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