Datasheet LTM4628 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Dual 8A or Single 16A DC/DC µModule Regulator |
| Pages / Page | 36 / 4 — ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply … |
| File Format / Size | PDF / 1.1 Mb |
| Document Language | English |
ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply over the full internal
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LTM4628
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full internal operating temperature range (Note 2). Specified as each individual output channel. TA = 25°C, VIN = 12V and VRUN1, VRUN2 at 5V unless otherwise noted, per the typical application in Figure 28. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ITRACK1, ITRACK2 Track Pin Soft-Start Pull-Up Current TRACK1, TRACK2 = 0V 1 1.25 1.5 µA UVLO Undervoltage Lockout Threshold VIN Falling 3.3 V VIN Rising 3.9 V UVLO Hysteresis 0.6 V tON(MIN) Minimum On-Time (Note 6) 90 ns RFBHI1, RFBHI2 Resistor Between VOUTS1, VOUTS2 60.05 60.4 60.75 kΩ and VFB1, VFB2 Pins for Each Output VOL_PGOOD PGOOD Voltage Low IPGOOD = 2mA 0.1 0.3 V (Each Channel) IPGOOD PGOOD Leakage Current VPGOOD = 5V ±5 µA VPGOOD PGOOD Trip Level VFB with Respect to Set Output Voltage VFB Ramping Negative –10 % VFB Ramping Positive 10 %
INTVCC Linear Regulator
VINTVCC Internal VCC Voltage 6V < VIN < 26.5V 4.8 5 5.2 V VINTVCC INTVCC Load Regulation ICC = 0mA to 50mA 0.5 2 % Load Regulation VEXTVCC EXTVCC Switchover Voltage EXTVCC Ramping Positive 4.5 4.7 V VEXTVCC(DROP) EXTVCC Dropout ICC = 20mA, VEXTVCC = 5V 50 100 mV VEXTVCC(HYST) EXTVCC Hysteresis 200 mV
Oscillator and Phase-Locked Loop
fNOM Nominal Frequency fSET = 1.2V 450 500 550 kHz fLOW Lowest Frequency fSET = 0V (Note 5) 210 250 290 kHz fHIGH Highest Frequency fSET > 2.4V, Up to INTVCC 700 780 860 kHz IfSET Frequency Set Current 9 10 11 µA RMODE_PLLIN Mode_PLLIN Input Resistance 250 kΩ PhCLKOUT Phase (Relative to VOUT1) PHASMD = GND 60 Deg PHASMD = Float 90 Deg PHASMD = INTVCC 120 Deg VOH_CLKOUT Clock High Output Voltage 2 V VOL_CLKOUT Clock Low Output Voltage 0.2 V
Differential Amplifier
AV Voltage Gain 1 V/V RIN Input Resistance Measured at DIFFP Input 80 kΩ VOS Input Offset Voltage VDIFFP = VDIFFOUT = 1.5V, IDIFFOUT = 100µA 3 mV PSRR Power Supply Rejection Ratio 5V < VIN < 20V 90 dB ICL Maximum Output Current 3 mA DIFFOUT (MAX) Maximum Output Voltage IDIFFOUT = 300µA INTVCC – 1.4V V GBW Gain Bandwidth Product 3 MHz 4628fe 4 For more information www.linear.com/LTM4628 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photos Revision History Typical Application Related Parts
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full internal operating temperature range (Note 2). Specified as each individual output channel. TA = 25°C, VIN = 12V and VRUN1, VRUN2 at 5V unless otherwise noted, per the typical application in Figure 28. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ITRACK1, ITRACK2 Track Pin Soft-Start Pull-Up Current TRACK1, TRACK2 = 0V 1 1.25 1.5 µA UVLO Undervoltage Lockout Threshold VIN Falling 3.3 V VIN Rising 3.9 V UVLO Hysteresis 0.6 V tON(MIN) Minimum On-Time (Note 6) 90 ns RFBHI1, RFBHI2 Resistor Between VOUTS1, VOUTS2 60.05 60.4 60.75 kΩ and VFB1, VFB2 Pins for Each Output VOL_PGOOD PGOOD Voltage Low IPGOOD = 2mA 0.1 0.3 V (Each Channel) IPGOOD PGOOD Leakage Current VPGOOD = 5V ±5 µA VPGOOD PGOOD Trip Level VFB with Respect to Set Output Voltage VFB Ramping Negative –10 % VFB Ramping Positive 10 %
INTVCC Linear Regulator
VINTVCC Internal VCC Voltage 6V < VIN < 26.5V 4.8 5 5.2 V VINTVCC INTVCC Load Regulation ICC = 0mA to 50mA 0.5 2 % Load Regulation VEXTVCC EXTVCC Switchover Voltage EXTVCC Ramping Positive 4.5 4.7 V VEXTVCC(DROP) EXTVCC Dropout ICC = 20mA, VEXTVCC = 5V 50 100 mV VEXTVCC(HYST) EXTVCC Hysteresis 200 mV
Oscillator and Phase-Locked Loop
fNOM Nominal Frequency fSET = 1.2V 450 500 550 kHz fLOW Lowest Frequency fSET = 0V (Note 5) 210 250 290 kHz fHIGH Highest Frequency fSET > 2.4V, Up to INTVCC 700 780 860 kHz IfSET Frequency Set Current 9 10 11 µA RMODE_PLLIN Mode_PLLIN Input Resistance 250 kΩ PhCLKOUT Phase (Relative to VOUT1) PHASMD = GND 60 Deg PHASMD = Float 90 Deg PHASMD = INTVCC 120 Deg VOH_CLKOUT Clock High Output Voltage 2 V VOL_CLKOUT Clock Low Output Voltage 0.2 V
Differential Amplifier
AV Voltage Gain 1 V/V RIN Input Resistance Measured at DIFFP Input 80 kΩ VOS Input Offset Voltage VDIFFP = VDIFFOUT = 1.5V, IDIFFOUT = 100µA 3 mV PSRR Power Supply Rejection Ratio 5V < VIN < 20V 90 dB ICL Maximum Output Current 3 mA DIFFOUT (MAX) Maximum Output Voltage IDIFFOUT = 300µA INTVCC – 1.4V V GBW Gain Bandwidth Product 3 MHz 4628fe 4 For more information www.linear.com/LTM4628 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photos Revision History Typical Application Related Parts
