Datasheet LTC4013 (Analog Devices) - 5

LTC4013
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). DCIN, VIN, VIN_S = 18V, ENAB = 1.4V, SYNC = 0V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
BST UVLO TG Enabled (Rising) 4.25 V TG Disabled (Falling) 3.81 V
OSC
Switching Frequency RT = 40.2kΩ l 950 1000 1050 kHz RT = 232kΩ 200 kHz SYNC Pin Threshold (Falling Edge) 1.3 1.4 1.5 V SYNC Pin Hysteresis 190 mV CLK Output Logic Level High 4.5 V Low 0.5 V
Input PowerPath Control
Reverse Turn-Off Threshold Voltage DCIN – VIN l –7.3 –4.4 –1.3 mV Forward Turn-On Threshold Voltage DCIN – VIN l –7.1 –4.2 –1.1 mV Forward Turn-On Hysteresis Voltage DCIN – VIN 0.2 mV INFET Turn-Off Current INFET = VIN + 1.5V –9.0 mA INFET Turn-On Current INFET = VIN + 1.5V 60 µA INFET Clamp Voltage IINFET = 2μA , DCIN = 12V to 60V l 11.0 12.5 V VIN = DCIN – 0.1V Measure VINFET – DCIN INFET Off Voltage IINFET = –2μA , DCIN = 12V to 59.9V l –2.2 –1.6 V VIN = DCIN +0.1V Measure VINFET – DCIN DCIN to BAT UVLO Switching Regulator Turn Off (VDCIN – VBAT Falling) 69 mV Switching Regulator Turn On (VDCIN – VBAT Rising) 99 mV
MPPT Regulation
FBOC Voltage Range l 1.0 3.0 V MPPT Sample Period 10.2 s MPPT Sample Pulse Width 271 µs Regulation Input Offset Set FBOC Look at MPPT Regulation –40 40 mV MPPT Input Burst Mode Turn On Threshold VMPPT – VFBOC (Converted) , VFBOC = 1.5V l –45 –32 –15 mV VSENSE – VBAT < C/10 Part Enter Burst Mode MPPT Input Burst Mode Hysteresis FBOC = 1.5V, VSENSE – VBAT < C/10 l 35 62 85 mV MPPT Turn Off – Turn On
Note 1.
Stresses beyond those listed under Absolute Maximum Ratings may temperature consistent with these specifications is determined by specific cause permanent damage to the device. Exposure to any Absolute Maximum operating conditions in conjunction with board layout, the rated package Rating condition for extended periods may affect device reliability and lifetime. thermal resistance and other environmental factors. This IC includes
Note 2.
The LTC4013 is tested under pulse loaded conditions such that over temperature protection that is intended to protect the device during T momentary overload. Junction temperature will exceed 125°C when over J ≈ TA. The LTC4013E is guaranteed to meet performance specifications from 0°C to 85°C junction temperature. Specifications over the –40°C temperature protection is active. Continuous operation above the specified to 125°C operating junction temperature range are assured by design, maximum operating junction temperature may impair device reliability. characterization and correlation with statistical process controls. The
Note 3.
VIN does not include switching currents. LTC4013I is guaranteed over the full –40°C to 125°C operating junction
Note 4.
IVIN current also includes current that charges capacitance on temperature range. The junction temperature (TJ in °C) is calculated CLKOUT. This current is approximately CCLKOUT • 5V • fSW. For this test from the ambient temperature (TA in °C) and power dissipation (PD in CCLKOUT was 100pF, fSW was 1MHz (RT = 40.2k) so the current included is Watts) according to the formula: TJ = TA + PD • θJA where θJA (in °C/W) 0.5mA. In normal operation the CLKOUT capacitance is much less. is the package thermal impedance. Note that the maximum ambient 4013fa 5