Datasheet LTM8023 (Analog Devices) - 3

LTM8023
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 10V, VRUN/SS = 10V, VBIAS = 3V, RT = 60.4k, COUT = 4.7µF unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input DC Voltage l 3.6 36 V VOUT Output DC Voltage 0A < IOUT ≤ 2A, RADJ Open, COUT = 51µF (Note 3) 0.8 V 0A < IOUT ≤ 2A, RADJ = 43.2k, COUT = 51µF (Note 3) 10 V RADJ(MIN) Minimum Allowable RADJ (Note 4) 42.2 kΩ IOUT Continuous Output DC Current 4 ≤ VIN ≤ 36, COUT = 51µF 0 2 A IQVIN VIN Quiescent Current VRUN/SS = 0.2V, RT = 174k 0.1 0.5 µA VBIAS = 3V, Not Switching, RT = 174k (E, I) l 25 60 µA VBIAS = 3V, Not Switching, RT = 174k (MP) l 25 350 µA VBIAS = 0V, Not Switching, RT = 174k 85 120 µA IQBIAS BIAS Quiescent Current VRUN/SS = 0.2V, RT = 174k 0.03 0.5 µA VBIAS = 3V, Not Switching, RT = 174k (E, I) l 50 120 µA VBIAS = 3V, Not Switching, RT = 174k (MP) l 50 200 µA VBIAS = 0V, Not Switching, RT = 174k 1 5 µA ΔVOUT/VOUT Line Regulation 5 ≤ VIN ≤ 36, IOUT = 1A, VOUT = 3.3V, COUT = 51µF 0.1 % ΔVOUT/VOUT Load Regulation VIN = 24V, 0 ≤ IOUT ≤ 2A, VOUT = 3.3V, COUT = 51µF 0.4 % VOUT(AC_RMS) Output Ripple (RMS) VIN = 24V, IOUT = 2A, VOUT = 3.3V, COUT = 51µF 10 mV fSW Switching Frequency RT = 113k, COUT = 51µF 325 kHz ISC(OUT) Output Short Circuit Current VIN = 36V, VOUT = 0V (Note 5) 2.9 A VADJ Voltage at ADJ Pin COUT = 51µF l 765 790 805 mV VBIAS(MIN) Minimum BIAS Voltage for Proper 2.3 2.8 V Operation IADJ Current Out of ADJ Pin ADJ = 1V, COUT = 51µF 2 µA IRUN/SS RUN/SS Pin Current VRUN/SS = 2.5V 5 10 µA VIH(RUN/SS) RUN/SS Input High Voltage COUT = 51µF 2.5 V VIL(RUN/SS) RUN/SS Input Low Voltage COUT = 51µF 0.2 V VPGOOD(TH) PGOOD Threshold VOUT Rising 730 mV IPGOOD(O) PGOOD Leakage VPGOOD = 30V 0.1 1 µA IPGOOD(SINK) PGOOD Sink Current VPGOOD = 0.4V 200 800 µA VSYNCIL SYNC Input Low Threshold fSYNC = 550kHz, COUT = 51µF 0.5 V VSYNCIH SYNC Input High Threshold fSYNC = 550kHz, COUT = 51µF 0.7 V ISYNCBIAS SYNC Pin Bias Current VSYNC = 0V 0.1 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings meet specifications over the full –55°C to 125°C temperature range. Note may cause permanent damage to the device. Exposure to any Absolute that the maximum internal temperature 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. resistance and other environmental factors.
Note 2:
The LTM8023E is guaranteed to meet performance specifications
Note 3:
COUT = 51µF is composed of a 4.7µF ceramic capacitor in parallel from 0°C to 85°C ambient. Specifications over the full –40°C to with a 47µF electrolytic. 85°C ambient operating temperature range are assured by design,
Note 4:
Guaranteed by design. characterization and correlation with statistical process controls. The
Note 5:
Short circuit current at V LTM8023I is guaranteed to meet specifications over the full –40°C to 85°C IN = 36V is guaranteed by characterization and correlation. 100% tested at V ambient operating temperature range. The LTM8023MP is guaranteed to IN = 10V 8023fj For more information www.linear.com/LTM8023 3