Datasheet LTM8022 (Analog Devices) - 3

LTM8022
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temp- erature range, otherwise specifi cations are at TA = 25°C. VIN = 10V, VRUN/SS = 10V, VBIAS = 3V, RT = 60.4kΩ, CIN = 2.2μF, COUT = 4.7μF, unless otherwise specifi ed. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input DC Voltage l 3.6 36 V VOUT Output DC Voltage 0V < IOUT < 1A, RADJ Open 0.8 V 0V < IOUT < 1A, RADJ = 43.2k 10 V RADJ(MIN) Minimum Allowable RADJ (Note 3) 42.2 kΩ IOUT(MAX) Continuous Output DC Current 4V < VIN < 36V, COUT = 51μF (Note 4) 0 1 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 3.6V < VIN < 36V, IOUT = 1A, VOUT = 3.3V 0.1 % ΔVOUT/VOUT Load Regulation VIN = 24V, 0V < IOUT < 1A, VOUT = 3.3V, 0.4 % COUT = 51μF VOUT(AC_RMS) Output Ripple (RMS) VIN = 24V, IOUT = 1A, VOUT = 3.3V, 10 mV COUT = 51μF fSW Switching Frequency RT = 113kΩ, COUT = 51μF 325 kHz ISC(OUT) Output Short-Circuit Current VIN = 36V, VOUT = 0V (Note 5) 3 A VADJ Voltage at ADJ Pin COUT = 51μF l 765 790 805 mV VBIAS(MIN) Minimum BIAS Voltage for Proper Operation 1.9 2.4 V 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 VPG(TH) PG Threshold VFB Rising 730 mV IPGO PG Leakage VPG = 30V 0.1 1 μA IPG(SINK) PG Sink Current VPG = 0.4V 200 800 μA VSYNC(IL) SYNC Low Threshold fSYNC = 550kHz, COUT = 51μF 0.5 V VSYNC(IH) SYNC High Threshold fSYNC = 550kHz, COUT = 51μF 0.7 V ISYNC(BIAS) SYNC Pin Bias Current VSYNC = 0V 0.1 μA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings meet specifi cations 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 specifi c 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 LTM8022E is guaranteed to meet performance specifi cations
Note 3:
Guaranteed by design. from 0°C to 85°C ambient. Specifi cations over the full –40°C to
Note 4:
COUT = 51μF is composed of a 4.7μF ceramic capacitor and a 47μF 85°C ambient operating temperature range are assured by design, electrolytic. characterization and correlation with statistical process controls. The
Note 5:
Short circuit current at VIN = 36V is guaranteed by characterization LTM8022I is guaranteed to meet specifi cations over the full –40°C to 85°C and correlation. 100% tested at VIN = 10V. ambient operating temperature range. The LTM8022MP is guaranteed to 8022fd 3