Datasheet LT1533 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | Ultralow Noise 1A Switching Regulator |
| 页数 / 页 | 20 / 2 — ABSOLUTE MAXIMUM RATINGS. PACKAGE/ORDER INFORMATION. (Note 1). ELECTRICAL … |
| 文件格式/大小 | PDF / 330 Kb |
| 文件语言 | 英语 |
ABSOLUTE MAXIMUM RATINGS. PACKAGE/ORDER INFORMATION. (Note 1). ELECTRICAL CHARACTERISTICS
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LT1533
W W W U U W U ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1)
Input Voltage (V TOP VIEW ORDER PART IN) .. 30V Switch Voltage (COL A, COL B) ... 30V NUMBER NC 1 16 PGND SHDN Pin Voltage .. 30V COL A 2 15 COL B Feedback Pin Current .. 10mA DUTY 3 14 VIN LT1533CS Negative Feedback Pin Current .. ±10mA SYNC 4 13 RVSL LT1533IS Storage Temperature Range ... – 65°C to 150°C C 5 12 T RCSL Maximum Junction Temperature ... 125°C R 6 11 T SHDN Operating Junction Temperature Range FB 7 10 VC LT1533C ... 0°C to 100°C NFB 8 9 GND LT1533I .. – 40°C to 100°C S PACKAGE Lead Temperature (Soldering, 10 sec).. 300°C 16-LEAD NARROW PLASTIC SO TJMAX = 125°C, θJA = 100°C/ W Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS VIN = 5V, VC = 0.9V, VFB = VREF. COL A, COL B, SHDN, NFB, DUTY pins open, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Supply and Protection
VIN Recommended Operating Range ● 2.7 23 V VIN(MIN) Minimum Input Voltage ● 2.55 2.7 V IVIN Supply Current 2.7V ≤ VIN ≤ 23V, RVSL, RCSL, RT = 17k ● 12 18 mA IVIN(OFF) Shutdown Supply Current 2.7V ≤ VIN ≤ 23V, VSHDN = 0V ● 12 30 µA VSHDN Shutdown Threshold 2.7V ≤ VIN ≤ 23V ● 0.4 0.8 1.2 V ISHDN Shutdown Input Current – 2 µA
Error Amplifiers
VREF Reference Voltage Measured at Feedback Pin 1.235 1.250 1.265 V ● 1.215 1.250 1.275 V IFB Feedback Input Current VFB = VREF ● 250 900 nA FBREG Reference Voltage Line Regulation 2.7V ≤ VIN ≤ 23V ● 0.003 0.03 %/V VNFR Negative Feedback Reference Voltage Measured at Negative Feedback Pin with ● – 2.550 – 2.500 – 2.420 V Feedback Pin Open INFR Negative Feedback Input Current VNFB = VNFR ● – 37 – 25 µA NFBREG Negative Feedback Reference Voltage 2.7V ≤ VIN ≤ 23V ● 0.002 0.05 %/V Line Regulation 2
W W W U U W U ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1)
Input Voltage (V TOP VIEW ORDER PART IN) .. 30V Switch Voltage (COL A, COL B) ... 30V NUMBER NC 1 16 PGND SHDN Pin Voltage .. 30V COL A 2 15 COL B Feedback Pin Current .. 10mA DUTY 3 14 VIN LT1533CS Negative Feedback Pin Current .. ±10mA SYNC 4 13 RVSL LT1533IS Storage Temperature Range ... – 65°C to 150°C C 5 12 T RCSL Maximum Junction Temperature ... 125°C R 6 11 T SHDN Operating Junction Temperature Range FB 7 10 VC LT1533C ... 0°C to 100°C NFB 8 9 GND LT1533I .. – 40°C to 100°C S PACKAGE Lead Temperature (Soldering, 10 sec).. 300°C 16-LEAD NARROW PLASTIC SO TJMAX = 125°C, θJA = 100°C/ W Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS VIN = 5V, VC = 0.9V, VFB = VREF. COL A, COL B, SHDN, NFB, DUTY pins open, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Supply and Protection
VIN Recommended Operating Range ● 2.7 23 V VIN(MIN) Minimum Input Voltage ● 2.55 2.7 V IVIN Supply Current 2.7V ≤ VIN ≤ 23V, RVSL, RCSL, RT = 17k ● 12 18 mA IVIN(OFF) Shutdown Supply Current 2.7V ≤ VIN ≤ 23V, VSHDN = 0V ● 12 30 µA VSHDN Shutdown Threshold 2.7V ≤ VIN ≤ 23V ● 0.4 0.8 1.2 V ISHDN Shutdown Input Current – 2 µA
Error Amplifiers
VREF Reference Voltage Measured at Feedback Pin 1.235 1.250 1.265 V ● 1.215 1.250 1.275 V IFB Feedback Input Current VFB = VREF ● 250 900 nA FBREG Reference Voltage Line Regulation 2.7V ≤ VIN ≤ 23V ● 0.003 0.03 %/V VNFR Negative Feedback Reference Voltage Measured at Negative Feedback Pin with ● – 2.550 – 2.500 – 2.420 V Feedback Pin Open INFR Negative Feedback Input Current VNFB = VNFR ● – 37 – 25 µA NFBREG Negative Feedback Reference Voltage 2.7V ≤ VIN ≤ 23V ● 0.002 0.05 %/V Line Regulation 2