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LTM4616 Datasheet(PDF) 4 Page - Linear Technology |
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LTM4616 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 32 page  LTM4639 4 4639f For more information www.linear.com/LTM4639 The l denotes the specifications which apply over the specified internal operating temperature range (Note 2), otherwise specifications are at TA = 25°C. VIN = 3.3V, CPWR = 5V, per the typical application in Figure 22. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS AV Differential Gain (Note 7) 1 V/V SR Slew Rate (Note 6) 2 V/µs GBP Gain Bandwidth Product (Note 6) 3 MHz CMRR Common Mode Rejection (Note 7) 60 dB IDIFF_OUT DIFF_OUT Current Sourcing 2 mA PSRR Power Supply Rejection Ratio 5V < VIN < 7V (Note 7) CPWR Tracking VIN 100 dB RIN Input Resistance VOSNS+ to GND 80 kΩ PGOOD Output VPGOOD PGOOD Trip Level VFB With Respect to Set Output VFB Ramping Negative VFB Ramping Positive –10 10 % % VPGL PGOOD Voltage Low IPGOOD = 2mA 0.1 0.3 V INTVCC Linear Regulator VINTVCC Source Output 5V < VIN < 7V, CPWR Tracking VIN 4.8 5 5.2 V VLDOINT INTVCC Load Regulation ICC = 0 to 40mA, CPWR = 5.5V 2 % VEXTVCC External VCC Switchover EXTVCC Ramping Positive, CPWR = 5.5V, INTVCC Output 5V l 4.5 4.7 V VLDOEXT EXTVCC Voltage Drop ICC = 25mA, VEXTVCC = 5V, CPWR = 5.5V 75 220 mV Oscillator and Phase-Locked Loop fSYNC Frequency Sync Capture Range MODE_PLLIN Clock Duty Cycle = 50% 250 800 kHz fNOM Nominal Frequency VfSET = 1.2V 450 500 550 kHz fLOW Lowest Frequency VfSET = 0V 210 250 290 kHz fHIGH Highest Frequency VfSET ≥ 2.4V 700 770 850 kHz IFREQ Frequency Set Current 9 10 11 µA RMODE_PLLIN MODE_PLLIN Input Resistance 250 kΩ VIH_MODE_PLLIN Clock Input Level High 2.0 V VIL_MODE_PLLIN Clock Input Level Low 0.8 V Temperature Diode VTEMP TEMP Diode Voltage ITEMP = 100µA 0.6 V TC VTEMP Temperature Coefficient l –2 mV/°C ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTM4639 is tested under pulsed load conditions such that TJ ≈ TA. The LTM4639E is guaranteed to meet performance specifications over the 0°C to 125°C internal operating temperature range. Specifications over the full –40°C to 125°C internal operating temperature range are assured by design, characterization and correlation with statistical process controls. The LTM4639I is guaranteed to meet specifications over the full –40°C to 125°C internal operating temperature range. Note that the maximum ambient temperature consistent with these specifications is determined by specific operating conditions in conjunction with board layout, the rated package thermal resistance and other environmental factors. Note 3: The minimum on-time condition is specified for a peak-to-peak inductor ripple current of ~40% of IMAX Load. (See the Applications Information section) Note 4: See output current derating curves for different VIN, VOUT and TA. Note 5: Limit current into the RUN pin to less than 2mA. Note 6: Guaranteed by design. Note 7: 100% tested at wafer level. |
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