Datasheet LT3752, LT3752-1 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | Active Clamp Synchronous Forward Controllers with Internal Housekeeping Controller |
| 页数 / 页 | 52 / 5 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| 修订版 | C |
| 文件格式/大小 | PDF / 2.3 Mb |
| 文件语言 | 英语 |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
该数据表的模型线
- LT3752EFE#PBF LT3752EFE#TRPBF LT3752EFE#WPBF LT3752EFE#WTRPBF LT3752EFE-1#PBF LT3752EFE-1#TRPBF LT3752EFE-1#WPBF LT3752EFE-1#WTRPBF LT3752HFE#PBF LT3752HFE#TRPBF LT3752HFE#WPBF LT3752HFE#WTRPBF LT3752HFE-1#PBF LT3752HFE-1#TRPBF LT3752HFE-1#WPBF LT3752HFE-1#WTRPBF LT3752HFE-2#WPBF LT3752HFE-2#WTRPBF LT3752IFE#PBF LT3752IFE#TRPBF LT3752IFE#WPBF LT3752IFE#WTRPBF LT3752IFE-1#PBF LT3752IFE-1#TRPBF LT3752IFE-1#WPBF LT3752IFE-1#WTRPBF LT3752MPFE#PBF LT3752MPFE#TRPBF LT3752MPFE-1#PBF LT3752MPFE-1#TRPBF
文件文字版本
LT3752/LT3752-1
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, UVLO_VSEC = 2.5V. PARAMETER CONDITIONS MIN TYP MAX UNITS
OVLO Hysteresis l 23 35 47 mV OVLO Pin Current (Note 10) OVLO = 0V 5 100 nA OVLO = 1.5V (SS1 = 2.7V) 0.9 mA OVLO = 1.5V (SS1 = 1.0V) 5 100 nA
Oscillator (Forward Controller: OUT, SOUT, AOUT)
Frequency: fOSC = 100kHz RT = 82.5k 94 100 106 kHz Frequency: fOSC = 300kHz RT = 24.9k l 279 300 321 kHz Frequency: fOSC = 500kHz RT = 14k 470 500 530 kHz fOSC Line Regulation RT = 24.9k 6.5V < VIN < 100V (LT3752) 0.05 0.1 %/V 10.5V < VIN < 16V (LT3752-1) 0.05 0.1 %/V Frequency and DVSEC Foldback Ratio (LT3752) (Fold) SS1 = VSSACT + 25mV, SS2 = 2.7V 4 Frequency and DVSEC Foldback Ratio (LT3752-1) (Fold) SS1 = VSS1ACT + 25mV, SS2 = 2.7V 2 SYNC Input High Threshold (Note 4) l 1.2 1.8 V SYNC Input Low Threshold (Note 4) l 0.6 1.025 V SYNC Pin Current SYNC = 6V 75 µA SYNC Frequency/Programmed fOSC 1.0 1.25 kHz/kHz
Linear Regulator (INTVCC) (LT3752)
INTVCC Regulation Voltage 6.6 7 7.2 V Dropout (VIN-INTVCC) VIN = 6.5V, IINTVCC = 10mA 0.8 V INTVCC UVLO(+) (Start Switching) 4.75 5 V INTVCC UVLO(–) (Stop Switching) 4.6 4.85 V INTVCC UVLO Hysteresis 0.075 0.15 0.24 V
Linear Regulator (INTVCC) (LT3752-1)
INTVCC Regulation Voltage 9.4 10 10.4 V Dropout (VIN-INTVCC) VIN = 8.75V, IINTVCC = 10mA 0.6 V INTVCC UVLO(+) (Start Switching) 7 7.4 V INTVCC UVLO(–) (Stop Switching) 6.8 7.2 V INTVCC UVLO Hysteresis 0.1 0.2 0.3 V
Linear Regulator (INTVCC) (LT3752/LT3752-1)
INTVCC OVLO(+) (Stop Switching) 15.9 16.5 17.2 V INTVCC OVLO(–) (Start Switching) 15.4 16 16.7 V INTVCC OVLO Hysteresis 0.38 0.5 0.67 V INTVCC Current Limit INTVCC = 0V 17 23 29 mA INTVCC = 5.75V (LT3752) l 35 50 60 mA INTVCC = 8.75V (LT3752-1) l 35 50 60 mA
Error Amplifier
FB Reference Voltage l 1.220 1.250 1.275 V FB Line Reg 6.5V < VIN < 100V (LT3752) 0.1 0.3 mV/V 10.5V < VIN < 16V (LT3752-1) 0.1 0.3 mV/V FB Load Reg COMP_SW – 0.1V < COMP < COMP_VOH – 0.1V 0.1 0.3 mV/V FB Input Bias Current (Note 10) 50 200 nA Open-Loop Voltage Gain 85 dB Unity-Gain Bandwidth (Note 8) 2.5 MHz COMP Source Current FB = 1V, COMP = 1.75V (Note 10) 6 11 mA Rev. C For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Table of Contents Absolute Maximum Ratings Order Information Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Revision History 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. VIN = 12V, UVLO_VSEC = 2.5V. PARAMETER CONDITIONS MIN TYP MAX UNITS
OVLO Hysteresis l 23 35 47 mV OVLO Pin Current (Note 10) OVLO = 0V 5 100 nA OVLO = 1.5V (SS1 = 2.7V) 0.9 mA OVLO = 1.5V (SS1 = 1.0V) 5 100 nA
Oscillator (Forward Controller: OUT, SOUT, AOUT)
Frequency: fOSC = 100kHz RT = 82.5k 94 100 106 kHz Frequency: fOSC = 300kHz RT = 24.9k l 279 300 321 kHz Frequency: fOSC = 500kHz RT = 14k 470 500 530 kHz fOSC Line Regulation RT = 24.9k 6.5V < VIN < 100V (LT3752) 0.05 0.1 %/V 10.5V < VIN < 16V (LT3752-1) 0.05 0.1 %/V Frequency and DVSEC Foldback Ratio (LT3752) (Fold) SS1 = VSSACT + 25mV, SS2 = 2.7V 4 Frequency and DVSEC Foldback Ratio (LT3752-1) (Fold) SS1 = VSS1ACT + 25mV, SS2 = 2.7V 2 SYNC Input High Threshold (Note 4) l 1.2 1.8 V SYNC Input Low Threshold (Note 4) l 0.6 1.025 V SYNC Pin Current SYNC = 6V 75 µA SYNC Frequency/Programmed fOSC 1.0 1.25 kHz/kHz
Linear Regulator (INTVCC) (LT3752)
INTVCC Regulation Voltage 6.6 7 7.2 V Dropout (VIN-INTVCC) VIN = 6.5V, IINTVCC = 10mA 0.8 V INTVCC UVLO(+) (Start Switching) 4.75 5 V INTVCC UVLO(–) (Stop Switching) 4.6 4.85 V INTVCC UVLO Hysteresis 0.075 0.15 0.24 V
Linear Regulator (INTVCC) (LT3752-1)
INTVCC Regulation Voltage 9.4 10 10.4 V Dropout (VIN-INTVCC) VIN = 8.75V, IINTVCC = 10mA 0.6 V INTVCC UVLO(+) (Start Switching) 7 7.4 V INTVCC UVLO(–) (Stop Switching) 6.8 7.2 V INTVCC UVLO Hysteresis 0.1 0.2 0.3 V
Linear Regulator (INTVCC) (LT3752/LT3752-1)
INTVCC OVLO(+) (Stop Switching) 15.9 16.5 17.2 V INTVCC OVLO(–) (Start Switching) 15.4 16 16.7 V INTVCC OVLO Hysteresis 0.38 0.5 0.67 V INTVCC Current Limit INTVCC = 0V 17 23 29 mA INTVCC = 5.75V (LT3752) l 35 50 60 mA INTVCC = 8.75V (LT3752-1) l 35 50 60 mA
Error Amplifier
FB Reference Voltage l 1.220 1.250 1.275 V FB Line Reg 6.5V < VIN < 100V (LT3752) 0.1 0.3 mV/V 10.5V < VIN < 16V (LT3752-1) 0.1 0.3 mV/V FB Load Reg COMP_SW – 0.1V < COMP < COMP_VOH – 0.1V 0.1 0.3 mV/V FB Input Bias Current (Note 10) 50 200 nA Open-Loop Voltage Gain 85 dB Unity-Gain Bandwidth (Note 8) 2.5 MHz COMP Source Current FB = 1V, COMP = 1.75V (Note 10) 6 11 mA Rev. C For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Table of Contents Absolute Maximum Ratings Order Information Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts