Datasheet LTC3588-2 (Analog Devices) - 3

LTC3588-2
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are for TA = 25°C (Note 2). VIN = 18V unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Voltage Range Low Impedance Source on VIN l 18.0 V IQ VIN Quiescent Current UVLO VIN = 12V, Not PGOOD 830 1400 nA Buck Enabled, Sleeping VIN = 18V 1500 2500 nA Buck Enabled, Not Sleeping ISW = 0A (Note 4) 150 250 µA VUVLO VIN Undervoltage Lockout Threshold VIN Rising l 16.0 17.0 V VIN Falling l 13.0 14.0 V VSHUNT VIN Shunt Regulator Voltage IVIN = 1mA 18.8 20.0 21.2 V ISHUNT Maximum Protective Shunt Current 1ms Duration 25 mA Internal Bridge Rectifier Loss IBRIDGE = 10µA 350 400 450 mV (|VPZ1 – VPZ2| – VIN) Internal Bridge Rectifier Reverse VREVERSE = 18V 20 nA Leakage Current Internal Bridge Rectifier Reverse IREVERSE = 1µA VSHUNT 30 V Breakdown Voltage VOUT Regulated Output Voltage 3.45V Output Selected Sleep Threshold l 3.466 3.554 V Wake-Up Threshold l 3.346 3.434 V 4.1V Output Selected Sleep Threshold l 4.116 4.221 V Wake-Up Threshold l 3.979 4.084 V 4.5V Output Selected Sleep Threshold l 4.516 4.646 V Wake-Up Threshold l 4.354 4.484 V 5.0V Output Selected Sleep Threshold l 5.016 5.175 V Wake-Up Threshold l 4.825 4.984 V PGOOD Falling Threshold As a Percentage of the Selected VOUT 83 92 % IVOUT Output Quiescent Current VOUT = 5.0V 125 250 nA IPEAK Buck Peak Switch Current 200 260 350 mA IBUCK Available Buck Output Current 100 mA RP Buck PMOS Switch On-Resistance 1.1 Ω RN Buck NMOS Switch On-Resistance 1.3 Ω Max Buck Duty Cycle l 100 % VIH(D0, D1) D0/D1 Input High Voltage l 1.2 V VIL(D0, D1) D0/D1 Input Low Voltage l 0.4 V IIH(D0, D1) D0/D1 Input High Current 10 nA IIL(D0, D1) D0/D1 Input Low Current 10 nA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings temperature range. Note that the maximum ambient temperature may cause permanent damage to the device. Exposure to any Absolute consistent with these specifications is determined by specific operating Maximum Rating condition for extended periods may affect device conditions in conjunction with board layout, the rated package thermal reliability and lifetime. impedance and other environmental factors.
Note 2:
The LTC3588E-2 is tested under pulsed load conditions such
Note 3:
The junction temperature (TJ, in °C) is calculated from the ambient that TJ ≈ TA. The LTC3588E-2 is guaranteed to meet specifications temperature (TA, in °C) and power dissipation (PD, in Watts) according from 0°C to 85°C junction temperature. Specifications over the –40°C to the formula: TJ = TA + (PD • θJA), where θJA (in °C/W) is the package to 125°C operating junction temperature range are assured by design, thermal impedance. characterization and correlation with statistical process controls. The
Note 4:
Dynamic supply current is higher due to gate charge being LTC3588I-2 is guaranteed over the –40°C to 125°C operating junction delivered at the switching frequency. 35882fc For more information www.linear.com/LTC3588-2 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Revision History Typical Application Related Parts