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LTC4054-4.2 Datasheet(PDF) 3 Page - Linear Technology |
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LTC4054-4.2 Datasheet(HTML) 3 Page - Linear Technology |
3 / 16 page 3 LTC4054-4.2/LTC4054X-4.2 405442xf Note 1: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. Note 2: The LTC4054E-4.2 and the LTC4054XE-4.2 are guaranteed to meet performance specifications from 0 °C to 70°C. Specifications over the –40 °C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: See Thermal Considerations. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS TLIM Junction Temperature in Constant 120 °C Temperature Mode RON Power FET “ON” Resistance 600 m Ω (Between VCC and BAT) tSS Soft-Start Time IBAT = 0 to IBAT =1000V/RPROG 100 µs tRECHARGE Recharge Comparator Filter Time VBAT High to Low 0.75 2 4.5 ms tTERM Termination Comparator Filter Time IBAT Falling Below ICHG/10 400 1000 2500 µs IPROG PROG Pin Pull-Up Current 3 µA The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 5V, unless otherwise noted. ELECTRICAL CHARACTERISTICS Note 4: Supply current includes PROG pin current (approximately 100 µA) but does not include any current delivered to the battery through the BAT pin (approximately 100mA). Note 5: This parameter is not applicable to the LTC4054X. Note 6: ITERM is expressed as a fraction of measured full charge current with indicated PROG resistor. TYPICAL PERFOR A CE CHARACTERISTICS PROG Pin Voltage vs Supply Voltage(Constant Current Mode) PROG Pin Voltage vs Temperature Charge Current vs PROG Pin Voltage VCC (V) 4.0 1.015 1.010 1.005 1.000 0.995 0.990 0.985 4.5 5.0 5.5 6.0 4054 G01 6.5 7.0 TEMPERATURE ( °C) –50 –25 0 50 25 75 100 4054 G02 1.0100 1.0075 1.0050 1.0025 1.0000 0.9975 0.9950 0.9925 0.9900 VPROG (V) 0 600 500 400 300 200 100 0 0.25 0.50 0.75 1.00 4054 G03 1.25 VCC = 5V VBAT = 4V TA = 25°C RPROG = 10k VCC = 5V VBAT = 4V RPROG = 10k VCC = 5V TA = 25°C RPROG = 2k |
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