Datasheet LTM4627 (Analog Devices) - 4

LTM4627
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified internal operating temperature range, otherwise specifications are at TA = 25°C (Note 2), VIN = 12V, per the typical application in Figure 18. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V + OS Input Offset Voltage VOSNS = VDIFF_OUT = 1.5V, IDIFF_OUT = 100µA 2 mV 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 5V < VIN < 20V (Note 7) 100 dB Ratio RIN Input Resistance VOSNS+ to GND 80 kΩ VPGOOD PGOOD Trip Level VFB With Respect to Set Output VFB Ramping Negative –10 % VFB Ramping Positive 10 % VPGL PGOOD Voltage Low IPGOOD = 2mA 0.1 0.3 V
INTVCC Linear Regulator
VINTVCC Internal VCC Voltage 6V < VIN < 20V 4.8 5 5.2 V VINTVCC Load Reg INTVCC Load Regulation ICC = 0 to 50mA 0.5 % VEXTVCC External VCC Switchover EXTVCC Ramping Positive l 4.5 4.7 V VLDO Ext EXTVCC Voltage Drop ICC = 25mA, VEXTVCC = 5V 50 100 mV
Oscillator and Phase-Locked Loop
fSYNC Frequency Sync Capture MODE_PLLIN Clock Duty Cycle = 50% 250 800 kHz Range fNOM Nominal Frequency VfSET = 1.2V 450 500 550 kHz fLOW Lowest Frequency VfSET = 1V 350 400 450 kHz fHIGH Highest Frequency VfSET ≥ 2.4V 700 770 850 kHz IFREQ Frequency Set Current 9 10 11 µA RMODE_PLLIN MODE_PLLIN Input 250 kΩ Resistance VIH_MODE_PLLIN Clock Input Level High 2.0 V VIL_MODE_PLLIN Clock Input Level Low 0.8 V
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. resistance and other environmental factors.
Note 2:
The LTM4627 is tested under pulsed load conditions such that
Note 3:
The minimum on-time condition is specified for a peak-to-peak TJ ≈ TA. The LTM4627E is guaranteed to meet performance specifications inductor ripple current of ~40% of IMAX Load. (See the Applications over the 0°C to 125°C internal operating temperature range. Specifications Information section) over the –40°C to 125°C internal operating temperature range are assured
Note 4:
See output current derating curves for different VIN, VOUT and TA. by design, characterization and correlation with statistical process
Note 5:
Limit current into the RUN pin to less than 2mA. controls. The LTM4627I is guaranteed to meet specifications over the –40°C to 125°C internal operating temperature range. The LTM4627MP
Note 6:
Guaranteed by design. is guaranteed and tested over the –55°C to 125°C internal operating
Note 7:
100% tested at wafer level. 4627fc 4 For more information www.linear.com/LTM4627 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photos Package Description Revision History Typical Application Related Parts