Preliminary Datasheet EL7801 (Intersil) - 2
| 制造商 | Intersil |
| 描述 | High Power LED Driver |
| 页数 / 页 | 16 / 2 — EL7801. Absolute Maximum Ratings. Electrical Specifications. PARAMETER. … |
| 文件格式/大小 | PDF / 412 Kb |
| 文件语言 | 英语 |
EL7801. Absolute Maximum Ratings. Electrical Specifications. PARAMETER. DESCRIPTION. CONDITIONS. MIN. TYP. MAX. UNIT
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EL7801 Absolute Maximum Ratings
(TA = 25°C) Supply Voltage, VIN . .18V Storage Temperature Range . .-65°C to +150°C Input Voltage . GND -0.3V to VSP +0.3V Ambient Operating Temperature . .-40°C to +85°C Continuous Output Current . .1A Operating Junction Temperature . +125°C Battery Input, VBAT . .24V Power Dissipation . See Curves CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications
VBAT = VIN = 12V, VDC = 5V, IOUT = 350mA, TA = -40°C to +85°C unless otherwise specified.
PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT
VIN Input Supply Voltage Normal operating range 2.7 16 V VBAT Input Supply Monitor Normal operating range 2.7 16 V VBATMAX Supply Fault Threshold If VBAT > VBATFAULT, FAULT pin is 17.6 20 24.4 V switched to ground ISEN Supply Current in VIN No switching, EN/PWM = 1 TBD 2 mA ISDIS Supply Current in VIN No switching, EN/PWM = 0 TBD 10 µA RSWITCH Power FET On Resistance ISWITCH = 1.2A 0.15 Ω VDC Regulated Auxiliary Supply 4.75 5 5.25 V ROUTOL Auxiliary Supply Open Loop Output VIN < VDC 50 Ω Resistance ROUTCL Auxiliary Supply Closed Loop Output VIN > 5V, F < 100Hz 5 Ω Resistance CMIN VDC Filter (Compensation) Capacitor 0.1 µF IOUT Output Drive Current 4 LED output string 1000 mA ILIMBOOST Power Switch Current Limit BOOST/BUCKN = VDC 3.6 A ILIMBOOST Power Switch Current Limit BOOST/BUCKN = GND 2.4 A ILIMFLASH Power Switch Current Limit TEMP = VDC 6 A TDELOV Transition Delay from Current to Voltage LX fault protection activation 20 ns Mode OVPH Over Voltage Positive Going Voltage Upper threshold to enter overvoltage fault TBD 34 V Mode Threshold mode OVPL Over Voltage Negative Going Voltage Lower threshold to exit overvoltage fault 17 TBD V Mode Threshold mode VHIGATE Switch Driver Supply In buck mode (VHI - VIN), VDC V In boost mode (VHI - GND) VFB Feedback Voltage System in regulation, VLEVEL = 1V 0.2 V VFLASH Feedback Voltage in Flash Mode Independent of VLEVEL 0.4 V VLEVEL Light Control Voltage Input Range Mode = 1, analog control of LED current GND 3 V FSW Switching Frequency TBD 1 TBD MHz FMOD External Light Modulation Frequency Mode = 1, modulation signal applied to 600 Hz EN/PWM TSWITCH Load Switch Transition Time CGATE = 2nF 100 ns RLSDRIVER Load Switch Driver Impedance 25 TBD Ω TFAULT Fault Timer Period TBD 50 TBD ms TFLASH Flash Timer Period Maximum flash timer period TBD 16 TBD ms 2 FN7354.0 December 22, 2005
(TA = 25°C) Supply Voltage, VIN . .18V Storage Temperature Range . .-65°C to +150°C Input Voltage . GND -0.3V to VSP +0.3V Ambient Operating Temperature . .-40°C to +85°C Continuous Output Current . .1A Operating Junction Temperature . +125°C Battery Input, VBAT . .24V Power Dissipation . See Curves CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications
VBAT = VIN = 12V, VDC = 5V, IOUT = 350mA, TA = -40°C to +85°C unless otherwise specified.
PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT
VIN Input Supply Voltage Normal operating range 2.7 16 V VBAT Input Supply Monitor Normal operating range 2.7 16 V VBATMAX Supply Fault Threshold If VBAT > VBATFAULT, FAULT pin is 17.6 20 24.4 V switched to ground ISEN Supply Current in VIN No switching, EN/PWM = 1 TBD 2 mA ISDIS Supply Current in VIN No switching, EN/PWM = 0 TBD 10 µA RSWITCH Power FET On Resistance ISWITCH = 1.2A 0.15 Ω VDC Regulated Auxiliary Supply 4.75 5 5.25 V ROUTOL Auxiliary Supply Open Loop Output VIN < VDC 50 Ω Resistance ROUTCL Auxiliary Supply Closed Loop Output VIN > 5V, F < 100Hz 5 Ω Resistance CMIN VDC Filter (Compensation) Capacitor 0.1 µF IOUT Output Drive Current 4 LED output string 1000 mA ILIMBOOST Power Switch Current Limit BOOST/BUCKN = VDC 3.6 A ILIMBOOST Power Switch Current Limit BOOST/BUCKN = GND 2.4 A ILIMFLASH Power Switch Current Limit TEMP = VDC 6 A TDELOV Transition Delay from Current to Voltage LX fault protection activation 20 ns Mode OVPH Over Voltage Positive Going Voltage Upper threshold to enter overvoltage fault TBD 34 V Mode Threshold mode OVPL Over Voltage Negative Going Voltage Lower threshold to exit overvoltage fault 17 TBD V Mode Threshold mode VHIGATE Switch Driver Supply In buck mode (VHI - VIN), VDC V In boost mode (VHI - GND) VFB Feedback Voltage System in regulation, VLEVEL = 1V 0.2 V VFLASH Feedback Voltage in Flash Mode Independent of VLEVEL 0.4 V VLEVEL Light Control Voltage Input Range Mode = 1, analog control of LED current GND 3 V FSW Switching Frequency TBD 1 TBD MHz FMOD External Light Modulation Frequency Mode = 1, modulation signal applied to 600 Hz EN/PWM TSWITCH Load Switch Transition Time CGATE = 2nF 100 ns RLSDRIVER Load Switch Driver Impedance 25 TBD Ω TFAULT Fault Timer Period TBD 50 TBD ms TFLASH Flash Timer Period Maximum flash timer period TBD 16 TBD ms 2 FN7354.0 December 22, 2005