Datasheet LTM8031 (Analog Devices) - 3

LTM8031
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, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input DC Voltage l 3.6 36 V VOUT Output DC Voltage 0.2A < IOUT ≤ 1A, RADJ Open 0.8 V 0.2A < IOUT ≤ 1A, RADJ = 21.6k 10 V IOUT Continuous Output DC Current VIN = 24V 1 A IQ(VIN) VIN Quiescent Current VRUN/SS = 0.2V 0.6 µA VBIAS = 3V, Not Switching l 25 60 µA VBIAS = 0V, Not Switching 88 120 µA IQ(BIAS) BIAS Quiescent Current VRUN/SS = 0.2V 0.03 µA VBIAS = 3V, Not Switching l 60 120 µA VBIAS = 0V, Not Switching 1 5 µA ∆VOUT Line Regulation 10V ≤ VIN ≤ 36V, IOUT = 1A, VOUT = 3.3V 0.1 % VOUT Load Regulation VIN = 24V, 0.2A ≤ IOUT ≤ 1A, VOUT = 3.3V 0.3 % VOUT(AC_RMS) Output Ripple (RMS) VIN = 24V, IOUT = 1A, VOUT = 3.3V 6 mV fSW Switching Frequency RT = 113k 325 kHz VADJ Voltage at ADJ Pin l 765 790 815 mV VBIAS(MIN) Minimum BIAS Voltage for Proper Operation 1.9 2.8 V IADJ Current Out of ADJ Pin VRUN/SS = 0V, VADJ = 0V, VOUT = 1V 4 µA IRUN/SS RUN/SS Pin Current VRUN/SS = 2.5V 5 10 µA VIH(RUN/SS) RUN/SS Input High Voltage 2.5 V VIL(RUN/SS) RUN/SS Input Low Voltage 0.2 V VPG(TH) ADJ Voltage Threshold for PGOOD to Switch 730 mV IPGO PGOOD Leakage VPG = 30V 0.1 1 µA IPGSINK PGOOD Sink Current VPG = 0.4V 200 800 µA VSYNCIL SYNC Input Low Threshold fSYNC = 550kHz 0.5 V VSYNCIH SYNC Input High Threshold fSYNC = 550kHz 0.7 V ISYNC(BIAS) SYNC Pin Bias Current VSYNC = 0V, VBIAS = 0V 0.1 µA VIN(RIPPLE) 550kHz Narrowband Conducted Emission VIN = 24V, VOUT = 3.3V, IOUT = 1A, fSW = 550kHz, 83 dBµV 1MHz Narrowband Conducted Emission 5µH LISN 63 dBµV 3MHz Narrowband Conducted Emission 51 dBµV
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings to meet specifications over the full –40°C to 125°C internal operating may cause permanent damage to the device. Exposure to any Absolute temperature range. The LTM8031MP is guaranteed to meet specifications Maximum Rating condition for extended periods may affect device over the full –55°C to 125°C internal operating temperature range. Note reliability and lifetime. that the maximum internal temperature is determined by specific operating
Note 2:
The LTM8031E is guaranteed to meet performance specifications conditions in conjunction with board layout, the rated package thermal from 0°C to 125°C internal. Specifications over the –40°C to 125°C resistance and other environmental factors. internal temperature range are assured by design, characterization and
Note 3:
See Linear Technology Application Note 100. correlation with statistical process controls. The LTM8031I is guaranteed 8031fb 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 Typical Applications Package Description Revision History Typical application Related Parts