Datasheet LT1939 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller |
| Pages / Page | 24 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. … |
| File Format / Size | PDF / 358 Kb |
| Document Language | English |
ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*
Model Line for this Datasheet
Text Version of Document
LT1939
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
V TOP VIEW IN, PG, PG Operating .. 25V/–0.3V SW ...V V 1 12 SW IN IN SHDN 2 11 BST BST .. 45V/–0.3V SS 3 13 10 LDRV BST Pin Above SW ..25V PG 4 9 LFB LDRV, SHDN ..15V V 5 8 FB C FB, LFB, R R PG T/SYNC 6 7 T/SYNC ...5V SS, V DD PACKAGE C ..2.5V 12-LEAD (3mm × 3mm) PLASTIC DFN Operating Junction Temperature Range (Notes 2, 6) θJA = 45°C/W, θJC(PAD) = 10°C/W LT1939EDD .. –40°C to 125°C EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB LT1939IDD ... –40°C to 125°C Storage Temperature Range ... –65°C to 150°C
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1939EDD#PBF LT1939EDD#TRPBF LDJZ 12-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LT1939IDD#PBF LT1939IDD#TRPBF LDJZ 12-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
The ELECTRICAL CHARACTERISTICS
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TJ = 25°C. VVIN = 15V, VRT/SYNC = 2V, unless otherwise specifi ed. PARAMETER CONDITIONS MIN TYP MAX UNITS
SHDN Threshold l 710 760 780 mV SHDN Source Current 1.5 2.5 3.5 μA SHDN Current Hysterisis 1.25 2 3.25 μA Minimum Input Voltage (Note 3) VFB = 0V l 2.4 2.8 V Supply Shutdown Current VSHDN = 0V l 12 30 μA Supply Quiescent Current VFB = 0.9V 2.5 3.5 mA FB Voltage VVC = 1V l 0.784 0.8 0.816 V VVC = 0.6V to 1.6V, VIN = 3V to 25V l 0.776 0.8 0.824 V FB Bias Current VFB = 0.8V, VVC = 1V 50 150 nA Error Amplifi er gm VVC = 1V, IVC = ±10μA 150 250 350 μmho Error Amplifi er Source Current VFB = 0.6V, VVC = 1V 12 16 20 μA Error Amplifi er Sink Current VFB = 1V, VVC = 1V 14 18 22 μA Error Amplifi er High Clamp VFB = 0.6V 1.8 2.0 2.2 V Error Amplifi er Switching Threshold VFB = 0.6V 0.6 0.8 1.0 V SS Source Current VSHDN = 1V, VSS = 0.4V, VFB = 0.9V 2.25 2.75 3.75 μA 1939f 2
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
V TOP VIEW IN, PG, PG Operating .. 25V/–0.3V SW ...V V 1 12 SW IN IN SHDN 2 11 BST BST .. 45V/–0.3V SS 3 13 10 LDRV BST Pin Above SW ..25V PG 4 9 LFB LDRV, SHDN ..15V V 5 8 FB C FB, LFB, R R PG T/SYNC 6 7 T/SYNC ...5V SS, V DD PACKAGE C ..2.5V 12-LEAD (3mm × 3mm) PLASTIC DFN Operating Junction Temperature Range (Notes 2, 6) θJA = 45°C/W, θJC(PAD) = 10°C/W LT1939EDD .. –40°C to 125°C EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB LT1939IDD ... –40°C to 125°C Storage Temperature Range ... –65°C to 150°C
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1939EDD#PBF LT1939EDD#TRPBF LDJZ 12-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LT1939IDD#PBF LT1939IDD#TRPBF LDJZ 12-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
The ELECTRICAL CHARACTERISTICS
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TJ = 25°C. VVIN = 15V, VRT/SYNC = 2V, unless otherwise specifi ed. PARAMETER CONDITIONS MIN TYP MAX UNITS
SHDN Threshold l 710 760 780 mV SHDN Source Current 1.5 2.5 3.5 μA SHDN Current Hysterisis 1.25 2 3.25 μA Minimum Input Voltage (Note 3) VFB = 0V l 2.4 2.8 V Supply Shutdown Current VSHDN = 0V l 12 30 μA Supply Quiescent Current VFB = 0.9V 2.5 3.5 mA FB Voltage VVC = 1V l 0.784 0.8 0.816 V VVC = 0.6V to 1.6V, VIN = 3V to 25V l 0.776 0.8 0.824 V FB Bias Current VFB = 0.8V, VVC = 1V 50 150 nA Error Amplifi er gm VVC = 1V, IVC = ±10μA 150 250 350 μmho Error Amplifi er Source Current VFB = 0.6V, VVC = 1V 12 16 20 μA Error Amplifi er Sink Current VFB = 1V, VVC = 1V 14 18 22 μA Error Amplifi er High Clamp VFB = 0.6V 1.8 2.0 2.2 V Error Amplifi er Switching Threshold VFB = 0.6V 0.6 0.8 1.0 V SS Source Current VSHDN = 1V, VSS = 0.4V, VFB = 0.9V 2.25 2.75 3.75 μA 1939f 2
