Datasheet LTM4663 (Analog Devices) - 3

link to page 2 LTM4663
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating temperature range, otherwise specifications are at TA = 25°C (Note 2), PVIN = SVIN = 5V, per the typical application. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
FREQ Oscillator Frequency 2.0 MHz SYNC External Sync Frequency Range 1.85 3.25 MHz VEN/SY Low EN/SY Input Voltage Low Level 0.8 V VEN/SY High EN/SY Input Voltage High Level 2.1 V
Error Amp
VCM Input Voltage Range (Note 3) 0 SVIN V VOS Input Offset Voltage (Note 3) 10 100 µV CMRR Common Mode Rejection Ratio (Note 3) 120 dB
TEC Current Limit
VILIM ILIM Input Range Cooling 1.3 VREF – 0.2 V Heating 0.2 1.2 V IILIM Current Limit Threshold Cooling VILIM = 1.3V 220 300 360 mA VILIM = 1.8V 1125 1260 1375 mA Heating VILIM = 1.2V 220 300 360 mA VILIM = 0.7V 1125 1260 1375 mA
TEC Voltage Limit
VVLIM VLIM Input Range 0.2 SVIN/2 V AVLIM Voltage Limit Gain (VLDR – VSFB)/VVLIM 2 V/V
TEC Current Measurement
RCS Current Sense Gain VIN = 5V 0.535 V/A VITEC TEC Current Measurement Heating ILOAD = −1.5A 0.45 V Heating ILOAD = −0.5A 0.98 V Cooling ILOAD = 0.5A 1.52 V Cooling ILOAD = 1.5A 2.05 V
TEC Voltage Measurement
AVTEC Voltage Sense Gain 0.25 V/V VVTEC TEC Voltage Measurement TEC = 4.8V,VLIM = 2.5V 2.45 V TEC = 2.4V,VLIM = 2.5V 1.85 V TEC = 0V,VLIM = 2.5V 1.25 V TEC = −2.4V,VLIM = 2.5V 0.625 V TEC = −4.8V,VLIM = 2.5V 0.05 V VVTEC_RANGE VTEC Output Range 0.005 2.625 V
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
100% tested at wafer level. may cause permanent damage to the device. Exposure to any Absolute
Note 4:
This IC includes overtemperature protection that is intended Maximum Rating condition for extended periods may affect device to protect the device during momentary overload conditions. Junction reliability and lifetime. temperature will exceed 125°C when overtemperature protection is active.
Note 2:
The LTM4663 is tested under pulsed load conditions such Continuous operation above the specified maximum operating junction that TJ ≈ TA. The LTM4663E is guaranteed to meet performance temperature may impair device reliability. 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 LTM4663I 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. Rev. 0 For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photo Package Description Design Resources Related Parts