Datasheet LT3597 (Analog Devices) - 4
| Fabricante | Analog Devices |
| Descripción | 60V Triple Step-Down LED Driver |
| Páginas / Página | 24 / 4 — elecTrical characTerisTics. The. denotes the specifications which apply … |
| Formato / tamaño de archivo | PDF / 405 Kb |
| Idioma del documento | Inglés |
elecTrical characTerisTics. The. denotes the specifications which apply over the full operating
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LT3597
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 24V, BOOST = 29V, BIAS = 5V, EN/UVLO = 5V, PWM1-3 = 3.3V, CTRL1-3 = CTRLM = TSET = 2.0V, VOUT1-3 = 24V, SYNC = 0V, unless otherwise specified. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
LED String Current Matching RISET1-3 = 20k ±0.35 ±1.5 % l ±0.35 ±2 % LED Pin Voltage Adaptive VOUT Loop Enabled 1.1 V LED1-3 Open Detection Threshold 0.28 V LED1-3 Short Protection Threshold (from GND) PWM1-3 = 3.3V 10 15 V LED1-3 Short Protection Threshold (from VOUT1-3) VOUT1-3 = 6V 1 1.25 2 V LED1-3 Pin Leakage Current VLED1-3 = 42V 200 nA PWM1-3 Input Low Voltage 0.4 V PWM1-3 Input High Voltage 1.6 V PWM1-3 Pin Bias Current 200 nA CTRL1-3 Voltage for Full LED Current 1.2 V CTRL1-3 Pin Bias Current CTRL1-3 = 6V 200 nA CTRLM Voltage for Full LED Current 1.2 V CTRLM Pin Bias Current CTRLM = 3V 200 nA FAULT Output Voltage Low IFAULT = 200µA 0.11 V FAULT Pin Input leakage Current FAULT = 25V 200 nA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
For Maximum Operating Ambient Temperature, see Thermal may cause permanent damage to the device. Exposure to any Absolute Considerations in the Applications Information section. Maximum Rating condition for extended periods may affect device
Note 4:
Guaranteed by design. reliability and lifetime.
Note 2:
The LT3597E is guaranteed to meet performance specifications from 0°C to 125°C junction temperature. Specifications over the –40°C to 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The LT3597I specifications are guaranteed over the full –40°C to 125°C operating junction temperature range. 3597fa 4 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 24V, BOOST = 29V, BIAS = 5V, EN/UVLO = 5V, PWM1-3 = 3.3V, CTRL1-3 = CTRLM = TSET = 2.0V, VOUT1-3 = 24V, SYNC = 0V, unless otherwise specified. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
LED String Current Matching RISET1-3 = 20k ±0.35 ±1.5 % l ±0.35 ±2 % LED Pin Voltage Adaptive VOUT Loop Enabled 1.1 V LED1-3 Open Detection Threshold 0.28 V LED1-3 Short Protection Threshold (from GND) PWM1-3 = 3.3V 10 15 V LED1-3 Short Protection Threshold (from VOUT1-3) VOUT1-3 = 6V 1 1.25 2 V LED1-3 Pin Leakage Current VLED1-3 = 42V 200 nA PWM1-3 Input Low Voltage 0.4 V PWM1-3 Input High Voltage 1.6 V PWM1-3 Pin Bias Current 200 nA CTRL1-3 Voltage for Full LED Current 1.2 V CTRL1-3 Pin Bias Current CTRL1-3 = 6V 200 nA CTRLM Voltage for Full LED Current 1.2 V CTRLM Pin Bias Current CTRLM = 3V 200 nA FAULT Output Voltage Low IFAULT = 200µA 0.11 V FAULT Pin Input leakage Current FAULT = 25V 200 nA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
For Maximum Operating Ambient Temperature, see Thermal may cause permanent damage to the device. Exposure to any Absolute Considerations in the Applications Information section. Maximum Rating condition for extended periods may affect device
Note 4:
Guaranteed by design. reliability and lifetime.
Note 2:
The LT3597E is guaranteed to meet performance specifications from 0°C to 125°C junction temperature. Specifications over the –40°C to 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The LT3597I specifications are guaranteed over the full –40°C to 125°C operating junction temperature range. 3597fa 4 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts