Datasheet LT3439 (Analog Devices) - 2

LT3439
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
V TOP VIEW IN Voltage ... 20V ORDER PART COL A, COL B Voltage ... 35V PGND 1 16 PGND NUMBER SHDN, SYNC Voltage .. 20V NC 2 15 NC Maximum Junction Temperature ... 150°C COL A 3 14 COL B LT3439EFE R 4 Operating Junction Temperature Range 13 SL VIN SYNC 5 12 NC (Note 2) .. – 40°C to 125°C C 6 11 T SHDN Storage Temperature Range .. – 65°C to 150°C FE PART R 7 10 T GND Lead Temperature (Soldering, 10 sec)... 300°C MARKING NC 8 9 NC FE PACKAGE 3439EFE 16-LEAD PLASTIC TSSOP TJMAX = 125°C, θJA = 40°C/ W NOTE: BACKSIDE OF PACKAGE CONNECTED TO GND Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 5V; RT = 16.9k; CT = 680pF; RSL = 16.9k; COL A, COL B, SHDN pins open, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Supply and Shutdown
VIN Operating Range ● 2.8 17.5 V VIN(MIN) Minimum Input Voltage 2.55 2.7 V IVIN Supply Current 2.8V ≤ VIN ≤ 17.5V ● 12 mA IVIN(SHDN) Supply Current in Shutdown Mode 2.8V ≤ VIN ≤ 17.5V, VSHDN = 0V 5 20 µA VSHDN(ON) Shutdown Turn-On Threshold 2.8V ≤ VIN ≤ 17.5V ● 1.3 1.4 V VSHDN(OFF) Shutdown Turn-Off Threshold 2.8V ≤ VIN ≤ 17.5V ● 1.20 1.26 V ISHDN Shutdown Pin Current Hysteresis 2.8V ≤ VIN ≤ 17.5V, VSHDN = 1.4V ● 10 20 40 µA
Oscillator and Sync
fMAX Oscillator Frequency ● 250 kHz fSYNC Synchronization Frequency Range ● 300 kHz VSYNC SYNC Pin Threshold ● 1.4 2.25 V RSYNC SYNC Pin Input Resistance 40 kΩ
Output Switches (COL A, COL B)
DC Switch Duty Cycle ● 50 % BV Output Switch Breakdown Voltage 2.8V ≤ VIN ≤ 17.5V ● 35 50 V RON Output Switch On Resistance ICOLA or ICOLB = 0.75A ● 0.5 0.95 Ω ILIM(MAX) Switch Current Limit 1.2 1.4 1.65 A
Slew Control
VSLEWR Output Voltage Slew Rising Edge Collector A or B 17 V/µs VSLEWF Output Voltage Slew Falling Edge Collector A or B 17 V/µs ISLEWR Output Current Slew Rising Edge Collector A or B 5 A/µs ISLEWF Output Current Slew Falling Edge Collector A or B 5 A/µs
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 2:
The LT3439E is guaranteed to meet performance specifications of a device may be impaired. from 0°C to 70°C. Specifications over the –40°C to 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. sn3439 3439fs 2