Datasheet LT3433 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | High Voltage Step-Up/Step-Down DC/DC Converter |
| Pages / Page | 16 / 2 — ABSOLUTE MAXIMUM RATINGS. PACKAGE/ORDER INFORMATION. (Note 1). ELECTRICAL … |
| File Format / Size | PDF / 244 Kb |
| Document Language | English |
ABSOLUTE MAXIMUM RATINGS. PACKAGE/ORDER INFORMATION. (Note 1). ELECTRICAL CHARACTERISTICS. The
Model Line for this Datasheet
Text Version of Document
LT3433
W W W U U W U ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1)
Input Supply (VIN) .. –0.3V to 60V TOP VIEW ORDER PART Boosted Supply (VBST) .. –0.3V to VSW_H + 30V SGND 1 16 SGND NUMBER (VBST(MAX) = 80V) V 2 15 BST SW_L Internal Supply (V SW_H 3 14 PWRGND LT3433EFE BIAS) ... – 0.3V to 30V SW_H Switch Voltage .. – 2V to 60V V 4 13 IN V LT3433IFE OUT 17 SW_L Switch Voltage ... – 0.3V to 30V BURST_EN 5 12 VBIAS Feedback Voltage (V V 6 11 SHDN FB) ... – 0.3V to 5V C Burst Enable Pin (V V 7 10 FB SS BURST_EN) ... – 0.3V to 30V FE PART MARKING Shutdown Pin (V SGND 8 9 SGND SHDN) ... – 0.3V to 60V Operating Junction Temperature Range (Note 5) FE PACKAGE 3433EFE 16-LEAD PLASTIC TSSOP LT3433E (Note 6) .. – 40°C to 125°C 3433IFE TJMAX = 125°C, θJA = 40°C/W, θJC = 10°C/W LT3433I ... – 40°C to 125°C EXPOSED PAD (PIN 17) MUST BE SOLDERED TO SGND Storage Temperature Range .. – 65°C to 150°C Lead Temperature (Soldering, 10 sec)... 300°C Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 13.8V, VFB = 1.25V, VOUT = 5V, VBURST_EN = 0V, VBST – VIN = 5V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Voltage Range ● 4 60 V VIN(UVLO) Undervoltage Lockout Enable Threshold ● 3.4 3.95 V Undervoltage Lockout Hysteresis 160 mV VOUT Operating Voltage Range ● 3.3 20 V VBST Operating Voltage Range VBST < VSW_H + 20V ● 75 V VBST – VSW_H ● 3.3 20 V IVIN Normal Operation (Notes 2, 3) ● 580 940 µA Burst Mode Operation VVC < 0.6V ● 100 190 µA Shutdown VSHDN < 0.4V ● 10 25 µA VBIAS Internal Supply Output Voltage ● 2.6 2.9 V Operating Voltage Range ● 20 V IVBIAS Normal Operation ● 660 990 µA Burst Mode Operation VVC < 0.6V 0.1 µA Shutdown VSHDN < 0.4V 0.1 µA Short-Circuit Current Limit 4.5 mA RSWH(ON) Boost Supply Switch On-Resistance ISW = 500mA ● 0.8 1.2 Ω RSWL(ON) Output Supply Switch On-Resistance ISW = 500mA ● 0.6 1 Ω VSHDN Shutdown Pin Thresholds Disable ● 0.4 V Enable ● 1 V IVBST/ISW Boost Supply Switch Drive Current High Side Switch On, ISW = 500mA ● 30 50 mA/A IVOUT/ISW Output Supply Switch Drive Current Low Side Switch On, ISW = 500mA ● 30 50 mA/A ILIM Switch Current Limit ● 0.5 0.7 0.9 A Foldback Current Limit VFB = 0V 0.35 A ISS Soft-Start Output Current ● 3 5 9 µA 3433f 2
W W W U U W U ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1)
Input Supply (VIN) .. –0.3V to 60V TOP VIEW ORDER PART Boosted Supply (VBST) .. –0.3V to VSW_H + 30V SGND 1 16 SGND NUMBER (VBST(MAX) = 80V) V 2 15 BST SW_L Internal Supply (V SW_H 3 14 PWRGND LT3433EFE BIAS) ... – 0.3V to 30V SW_H Switch Voltage .. – 2V to 60V V 4 13 IN V LT3433IFE OUT 17 SW_L Switch Voltage ... – 0.3V to 30V BURST_EN 5 12 VBIAS Feedback Voltage (V V 6 11 SHDN FB) ... – 0.3V to 5V C Burst Enable Pin (V V 7 10 FB SS BURST_EN) ... – 0.3V to 30V FE PART MARKING Shutdown Pin (V SGND 8 9 SGND SHDN) ... – 0.3V to 60V Operating Junction Temperature Range (Note 5) FE PACKAGE 3433EFE 16-LEAD PLASTIC TSSOP LT3433E (Note 6) .. – 40°C to 125°C 3433IFE TJMAX = 125°C, θJA = 40°C/W, θJC = 10°C/W LT3433I ... – 40°C to 125°C EXPOSED PAD (PIN 17) MUST BE SOLDERED TO SGND Storage Temperature Range .. – 65°C to 150°C Lead Temperature (Soldering, 10 sec)... 300°C Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 13.8V, VFB = 1.25V, VOUT = 5V, VBURST_EN = 0V, VBST – VIN = 5V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Voltage Range ● 4 60 V VIN(UVLO) Undervoltage Lockout Enable Threshold ● 3.4 3.95 V Undervoltage Lockout Hysteresis 160 mV VOUT Operating Voltage Range ● 3.3 20 V VBST Operating Voltage Range VBST < VSW_H + 20V ● 75 V VBST – VSW_H ● 3.3 20 V IVIN Normal Operation (Notes 2, 3) ● 580 940 µA Burst Mode Operation VVC < 0.6V ● 100 190 µA Shutdown VSHDN < 0.4V ● 10 25 µA VBIAS Internal Supply Output Voltage ● 2.6 2.9 V Operating Voltage Range ● 20 V IVBIAS Normal Operation ● 660 990 µA Burst Mode Operation VVC < 0.6V 0.1 µA Shutdown VSHDN < 0.4V 0.1 µA Short-Circuit Current Limit 4.5 mA RSWH(ON) Boost Supply Switch On-Resistance ISW = 500mA ● 0.8 1.2 Ω RSWL(ON) Output Supply Switch On-Resistance ISW = 500mA ● 0.6 1 Ω VSHDN Shutdown Pin Thresholds Disable ● 0.4 V Enable ● 1 V IVBST/ISW Boost Supply Switch Drive Current High Side Switch On, ISW = 500mA ● 30 50 mA/A IVOUT/ISW Output Supply Switch Drive Current Low Side Switch On, ISW = 500mA ● 30 50 mA/A ILIM Switch Current Limit ● 0.5 0.7 0.9 A Foldback Current Limit VFB = 0V 0.35 A ISS Soft-Start Output Current ● 3 5 9 µA 3433f 2
