Datasheet LT3072 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | Dual, Low Noise, 2.5A Programmable Output, 80mV Low Dropout Linear Regulator |
| 页数 / 页 | 28 / 5 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 2.5 Mb |
| 文件语言 | 英语 |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
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文件文字版本
link to page 2 LT3072
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. RMON = 1kΩ, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH Input Threshold (Logic-1 State) Input Rising l 0.86 1 V VOUTB2, VOUTB1, VOUTB0 Input Hysteresis VIL Input Rising 65 mV VOUTB2, VOUTB1, VOUTB0 VIH Input Falling 90 mV Input Pin Current High VIH = VBIAS = 5.25V, Current Sinks Into Pin l 17 26 µA VOUTB2, VOUTB1, VOUTB0 Input Pin Current Low VIL = 0V, VBIAS = 5.25V, Current Sources Out of Pin l 13 20 µA VOUTB2, VOUTB1, VOUTB0 EN Pin Threshold VOUT = OFF to ON l 0.85 1.1 V VOUT = ON to OFF l 0.3 0.5 V EN Pin Logic—High Current VEN = VBIAS = 5.25V l 7 12 20 µA EN Pin Logic—Low Current VEN = 0V l 1 µA VBIAS Ripple Rejection (Note 4) VBIAS = 2.7V (Avg), VIN = 1.5V, VOUT = 1.2V, IOUT = 2.5A, 54 70 dB VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz VIN Ripple Rejection (Notes 4, 5, 6) VBIAS = 2.5V, VIN = 1.65V (Avg), VOUT = 1.2V, IOUT = 2.5A, 60 74 dB VRIPPLE = 300mVP-P, fRIPPLE = 120Hz Channel Isolation (Notes 4, 5, 6) VBIAS = 2.5V, VIN = 1.5V, VOUT = 1.2V, IOUT1 = IOUT2 = 2.5A, 80 dB (Opposing Channel VOUT Ripple) VRIPPLE = 50mVP-P, fRIPPLE = 120Hz Output Voltage Noise (Note 4) VOUT = 1.2V, IOUT = 2.5A, CREF/BYP = 100nF, 12 µVRMS BW = 10Hz to 100kHz, COUT = 10µF
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
Operating conditions are limited by maximum junction may cause permanent damage to the device. Exposure to any Absolute temperature. The regulated output voltage specification does not apply Maximum Rating condition for extended periods may affect device for all possible combinations of input voltage and output current. When reliability and lifetime. operating at maximum output current, limit the input voltage range to
Note 2:
The LT3072 regulators are tested and specified under pulse VIN ≤ VOUT + 300mV. load conditions such that TJ = TA. The LT3072E is 100% tested at
Note 7:
VIOC input-to-output voltage control incorporates a power TA = 25°C and performance is guaranteed from 0°C to 125°C. adaptive feature that maximizes VIN under light loads at VIN – VOUT = Performance at –40°C and 125°C is assured by design, characterization 450mV, and reduces VIN – VOUT to 300mV near max load. and correlation with statistical process controls. The LT3072I is
Note 8:
Dropout voltage, VDO, is the minimum input-to-output voltage guaranteed over the –40°C to 125°C operating junction temperature range. differential at a specified output current. In dropout, the output voltage
Note 3:
The TEMP output voltage represents the average temperature equals VIN – VDO. of the LT3072’s power devices. Due to power dissipation, temperature
Note 9:
GND pin current is tested with VIN = VOUT(NOMINAL) + 300mV and a gradients and thermal time constants across the die, the TEMP output current source load. voltage measurement is not guaranteed to precisely track transient power
Note 10:
Reverse output current is tested with the IN pins grounded and excursions in the power device. The internal thermal shutdown sensors, the OUT + SENSE pins forced to the rated output voltage. This is measured embedded in each power device, are designed to keep the LT3072 within as current into the OUT + SENSE pins. its safe operating area.
Note 11:
The LT3072 requires a minimum load current to ensure proper
Note 4:
Electrical Test performed with both channels enabled, the channel regulation and stability. This parameter is guaranteed by design and is not under test at the specified load current and the other channel at 10mA. production tested.
Note 5:
To maintain proper performance and regulation, the BIAS supply voltage must be higher than both IN supply voltages. For both VOUT voltages, the BIAS voltage must satisfy the following conditions: 2.375V ≤ VBIAS ≤ 5.25V and VBIAS ≥ (VOUT + 1.2V). Rev. 0 For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Typical Application Related Parts
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. RMON = 1kΩ, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH Input Threshold (Logic-1 State) Input Rising l 0.86 1 V VOUTB2, VOUTB1, VOUTB0 Input Hysteresis VIL Input Rising 65 mV VOUTB2, VOUTB1, VOUTB0 VIH Input Falling 90 mV Input Pin Current High VIH = VBIAS = 5.25V, Current Sinks Into Pin l 17 26 µA VOUTB2, VOUTB1, VOUTB0 Input Pin Current Low VIL = 0V, VBIAS = 5.25V, Current Sources Out of Pin l 13 20 µA VOUTB2, VOUTB1, VOUTB0 EN Pin Threshold VOUT = OFF to ON l 0.85 1.1 V VOUT = ON to OFF l 0.3 0.5 V EN Pin Logic—High Current VEN = VBIAS = 5.25V l 7 12 20 µA EN Pin Logic—Low Current VEN = 0V l 1 µA VBIAS Ripple Rejection (Note 4) VBIAS = 2.7V (Avg), VIN = 1.5V, VOUT = 1.2V, IOUT = 2.5A, 54 70 dB VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz VIN Ripple Rejection (Notes 4, 5, 6) VBIAS = 2.5V, VIN = 1.65V (Avg), VOUT = 1.2V, IOUT = 2.5A, 60 74 dB VRIPPLE = 300mVP-P, fRIPPLE = 120Hz Channel Isolation (Notes 4, 5, 6) VBIAS = 2.5V, VIN = 1.5V, VOUT = 1.2V, IOUT1 = IOUT2 = 2.5A, 80 dB (Opposing Channel VOUT Ripple) VRIPPLE = 50mVP-P, fRIPPLE = 120Hz Output Voltage Noise (Note 4) VOUT = 1.2V, IOUT = 2.5A, CREF/BYP = 100nF, 12 µVRMS BW = 10Hz to 100kHz, COUT = 10µF
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
Operating conditions are limited by maximum junction may cause permanent damage to the device. Exposure to any Absolute temperature. The regulated output voltage specification does not apply Maximum Rating condition for extended periods may affect device for all possible combinations of input voltage and output current. When reliability and lifetime. operating at maximum output current, limit the input voltage range to
Note 2:
The LT3072 regulators are tested and specified under pulse VIN ≤ VOUT + 300mV. load conditions such that TJ = TA. The LT3072E is 100% tested at
Note 7:
VIOC input-to-output voltage control incorporates a power TA = 25°C and performance is guaranteed from 0°C to 125°C. adaptive feature that maximizes VIN under light loads at VIN – VOUT = Performance at –40°C and 125°C is assured by design, characterization 450mV, and reduces VIN – VOUT to 300mV near max load. and correlation with statistical process controls. The LT3072I is
Note 8:
Dropout voltage, VDO, is the minimum input-to-output voltage guaranteed over the –40°C to 125°C operating junction temperature range. differential at a specified output current. In dropout, the output voltage
Note 3:
The TEMP output voltage represents the average temperature equals VIN – VDO. of the LT3072’s power devices. Due to power dissipation, temperature
Note 9:
GND pin current is tested with VIN = VOUT(NOMINAL) + 300mV and a gradients and thermal time constants across the die, the TEMP output current source load. voltage measurement is not guaranteed to precisely track transient power
Note 10:
Reverse output current is tested with the IN pins grounded and excursions in the power device. The internal thermal shutdown sensors, the OUT + SENSE pins forced to the rated output voltage. This is measured embedded in each power device, are designed to keep the LT3072 within as current into the OUT + SENSE pins. its safe operating area.
Note 11:
The LT3072 requires a minimum load current to ensure proper
Note 4:
Electrical Test performed with both channels enabled, the channel regulation and stability. This parameter is guaranteed by design and is not under test at the specified load current and the other channel at 10mA. production tested.
Note 5:
To maintain proper performance and regulation, the BIAS supply voltage must be higher than both IN supply voltages. For both VOUT voltages, the BIAS voltage must satisfy the following conditions: 2.375V ≤ VBIAS ≤ 5.25V and VBIAS ≥ (VOUT + 1.2V). Rev. 0 For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Typical Application Related Parts