Datasheet LTC1923 (Analog Devices) - 2

LTC1923
W W W U ABSOLUTE AXI U RATI GS (Note 1)
VDD to GND... – 0.3V to 6V FAULT, H/C ... – 0.3V to 6V SDSYNC, RSLEW ... – 0.3V to 6V Operating Temperature Range (Note 2) .. – 40°C to 85°C FB, CNTRL, VTHRM, ILIM, VSET... – 0.3V to 6V Storage Temperature Range ... – 65°C to 125°C CS +, CS –, TEC+, TEC – ...– 0.3V to 6V Lead Temperature (Soldering, 10 sec).. 300°C
U W U PACKAGE/ORDER I FOR ATIO
TOP VIEW ORDER PART ORDER PART NUMBER PLLLPF 1 28 R NUMBER T SLEW T T REF SDSYNC R PLLLPF R C V NC NC R 2 27 SLEW CT 32 31 30 29 28 27 26 25 LTC1923EUH LTC1923EGN SDSYNC 3 26 VREF CNTRL 1 PIN 1 24 PDRVB TOP VIEW CNTRL 4 25 PDRVB EAOUT 2 23 NDRVB EAOUT 5 24 NDRVB FB 3 22 VDD FB 6 23 VDD AGND 4 21 VDD AGND 7 22 PGND NC 5 20 PGND SS 6 19 NDRVA SS 8 21 NDRVA I 7 18 PDRVA I 9 20 LIM LIM PDRVA V 8 17 SET CS + V 10 19 SET CS+ 9 10 11 12 13 14 15 16 FAULT 11 18 CS– – + – V 12 17 H/C TEC THRM ITEC V I TEC TEC TEC CS FAULT THRMV H/C 13 16 TEC+ UH PACKAGE V 14 15 TEC TEC– 32-LEAD PLASTIC QFN T GN PACKAGE JMAX = 125°C, θJA = 34°C/W 28-LEAD PLASTIC SSOP EXPOSED PAD IS PGND (MUST BE SOLDERED TO PCB) TJMAX = 125°C, θJA = 120°C/W 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 TA = 25
°
C. VDD = 5V, RSLEW = VDD, SDSYNC = VDD, RT = 10k, CT = 330pF unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Input Supply
VDD Operating Supply Voltage ● 2.7 5.5 V UVLO Undervoltage Lockout Low to High Threshold ● 2.6 2.7 V UVHYST Hysteresis High to Low ● 50 130 mV IDD Operating Supply Current No Output Load, Outputs Not Switching 2 4 mA IDDSHDN Shutdown IDD SDSYNC = 0V 10 25 µA SHDNTH Shutdown Threshold Measured at PDRVA, PDRVB 0.3 0.8 1.4 V 1923f 2