Datasheet LTM4645 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 25A DC/DC Step-Down µModule Regulator |
| Pages / Page | 34 / 4 — e lecTrical characTerisTics The. denotes the specifications which apply … |
| File Format / Size | PDF / 707 Kb |
| Document Language | English |
e lecTrical characTerisTics The. denotes the specifications which apply over the specified internal
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LTM4645
e lecTrical 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. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS PGOOD
RPGOOD PGOOD Pull-Down Resistance 90 200 Ω VPGOOD PGOOD Trip Level VFB With Respect to Set Output VFB Ramping Negative –7.5 % VFB Ramping Positive 7.5 % VPGL PGOOD Voltage Low IPGOOD = 2mA 0.1 0.3 V
INTVCC Linear Regulator
VINTVCC Internal VCC Voltage VIN ≥ 12V 5.3 5.5 5.7 V VINTVCC Load Reg INTVCC Load Regulation ICC = 0mA to 10mA 0.5 %
Oscillator and Phase-Locked Loop
fSYNC SYNC Capture Range 300 1000 kHz fSW Switching Frequency RFREQ = 47.5kΩ 540 600 660 kHz IFREQ FREQ Pin Current VFREQ = 0.8V 20 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 1.2 V θCLKOUT CLKOUT to SW Phase Delay VPHSMD = 0V 90 Deg VPHSMD = 1/4 INTVCC 90 Deg VPHSMD = Float 120 Deg VPHSMD = 3/4 INTVCC 60 Deg VPHSMD = INTVCC 180 Deg
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
The minimum on-time condition is specified for a peak-to-peak may cause permanent damage to the device. Exposure to any Absolute inductor ripple current of ~40% of IMAX Load. (See the Applications Maximum Rating condition for extended periods may affect device Information section) reliability and lifetime.
Note 4:
See output current derating curves for different VIN, VOUT and TA.
Note 2:
The LTM4645 is tested under pulsed load conditions such that
Note 5:
Limit current into the RUN pin to less than 2mA. TJ ≈ TA. The LTM4645E is guaranteed to meet performance specifications
Note 6:
Guaranteed by design. over the 0°C to 125°C internal operating temperature range. Specifications
Note 7:
100% tested at wafer level. over the full –40°C to 125°C internal operating temperature range are assured by design, characterization and correlation with statistical process controls. The LTM4645I 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. 4645f 4 For more information www.linear.com/LTM4645 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photo Design Resources Related Parts
e lecTrical 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. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS PGOOD
RPGOOD PGOOD Pull-Down Resistance 90 200 Ω VPGOOD PGOOD Trip Level VFB With Respect to Set Output VFB Ramping Negative –7.5 % VFB Ramping Positive 7.5 % VPGL PGOOD Voltage Low IPGOOD = 2mA 0.1 0.3 V
INTVCC Linear Regulator
VINTVCC Internal VCC Voltage VIN ≥ 12V 5.3 5.5 5.7 V VINTVCC Load Reg INTVCC Load Regulation ICC = 0mA to 10mA 0.5 %
Oscillator and Phase-Locked Loop
fSYNC SYNC Capture Range 300 1000 kHz fSW Switching Frequency RFREQ = 47.5kΩ 540 600 660 kHz IFREQ FREQ Pin Current VFREQ = 0.8V 20 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 1.2 V θCLKOUT CLKOUT to SW Phase Delay VPHSMD = 0V 90 Deg VPHSMD = 1/4 INTVCC 90 Deg VPHSMD = Float 120 Deg VPHSMD = 3/4 INTVCC 60 Deg VPHSMD = INTVCC 180 Deg
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
The minimum on-time condition is specified for a peak-to-peak may cause permanent damage to the device. Exposure to any Absolute inductor ripple current of ~40% of IMAX Load. (See the Applications Maximum Rating condition for extended periods may affect device Information section) reliability and lifetime.
Note 4:
See output current derating curves for different VIN, VOUT and TA.
Note 2:
The LTM4645 is tested under pulsed load conditions such that
Note 5:
Limit current into the RUN pin to less than 2mA. TJ ≈ TA. The LTM4645E is guaranteed to meet performance specifications
Note 6:
Guaranteed by design. over the 0°C to 125°C internal operating temperature range. Specifications
Note 7:
100% tested at wafer level. over the full –40°C to 125°C internal operating temperature range are assured by design, characterization and correlation with statistical process controls. The LTM4645I 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. 4645f 4 For more information www.linear.com/LTM4645 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photo Design Resources Related Parts
