Datasheet LTC4007-1 (Analog Devices) - 4

LTC4007-1
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VDCIN = 20V, VBAT = 12V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VOL Low Logic Level of ACP, CHG, FLAG, LOBAT, IOL = 100µA l 0.5 V ICL, FAULT VOH High Logic Level of CHG, LOBAT, ICL IOH = –1µA l 2.7 V IOFF Off State Leakage Current of ACP, FLAG, FAULT VOH = 3V –1 1 µA IPO Pull-Up Current on CHG, LOBAT, ICL V = 0V –10 µA Timer Defeat Threshold at CHG 1 V
Programming Inputs (CHEM and 3C4C)
VIH High Logic Level l 3.3 V VIL Low Logic Level l 1 V IPI Pull-Up Current V = 0V –14 µA
Oscillator
fOSC Regulator Switching Frequency 255 300 345 kHz fMIN Regulator Switching Frequency in Drop Out Duty Cycle ≥ 98% 20 25 kHz DCMAX Regulator Maximum Duty Cycle VCSP = VBAT 98 99 %
Gate Drivers (TGATE, BGATE)
VTGATE High (VCLN – VTGATE) ITGATE = –1mA 50 mV VBGATE High CLOAD = 3000pF 4.5 5.6 10 V VTGATE Low (VCLN – VTGATE) CLOAD = 3000pF 4.5 5.6 10 V VBGATE Low IBGATE = 1mA 50 mV TGATE Transition Time TGTR TGATE Rise Time CLOAD = 3000pF, 10% to 90% 50 110 ns TGTF TGATE Fall Time CLOAD = 3000pF, 10% to 90% 50 100 ns BGATE Transition Time BGTR BGATE Rise Time CLOAD = 3000pF, 10% to 90% 40 90 ns BGTF BGATE Fall Time CLOAD = 3000pF, 10% to 90% 40 80 ns VTGATE at Shutdown (VCLN – VTGATE) ITGATE = –1µA, DCIN = 0V, CLN = 12V 100 mV VBGATE at Shutdown IBGATE = 1µA, DCIN = 0V, CLN = 12V 100 mV
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 4:
The LTC4007E-1 is guaranteed to meet performance specifications of a device may be impaired. from 0°C to 85°C. Specifications over the –40°C to 85°C operating
Note 2:
See Test Circuit. temperature range are assured by design, characterization and correlation
Note 3:
Does not include tolerance of current sense resistor or current with statistical process controls. programming resistor. 40071fa 4 For more information www.linear.com/LTC4007-1 Document Outline Description Typical Application Absolute Maximum Ratings Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Application Related Parts