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LT1505 Datasheet(PDF) 2 Page - Linear Technology |
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LT1505 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 16 page  2 LT1505 VCC, CLP, CLN, INFET, UV, 3CELL, FLAG................ 27V SW Voltage with Respect to GND ........................... – 2V BOOST, BOOSTC Voltage with Respect to VCC ....... 10V GBIAS ..................................................................... 10V SYNC, BAT2, BAT, SENSE, SPIN ............................ 20V VC, PROG, VFB, 4.1V, 4.2V ........................................ 7V CAP, SHDN .......................................................... ±3mA ABSOLUTE MAXIMUM RATINGS (Note 1) TGATE, BGATE Current Continuous ....................... 0.2A TGATE, BGATE Output Energy (per cycle) ............... 2 µJ Maximum Operating VCC ......................................... 24V Operating Ambient Temperature Range ....... 0 °C to 70°C Operating Junction Temperature Range .... 0 °C to 125°C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C ORDER PART NUMBER LT1505CG LT1505CG-1 ORDER PART NUMBER TJMAX = 125°C, θJA = 100°C/ W Consult factory for Industrial and Military grade parts. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 TOP VIEW G PACKAGE 28-LEAD PLASTIC SSOP 28 27 26 25 24 23 22 21 20 19 18 17 16 15 BOOST TGATE SW SYNC SHDN AGND UV INFET CLP CLN COMP1 CAP FLAG 4.1V PGND BGATE GBIAS BOOSTC VCC BAT SPIN SENSE BAT2 PROG VC VFB 3CELL 4.2V TJMAX = 125°C, θJA = 100°C/ W 1 2 3 4 5 6 7 8 9 10 11 12 13 14 TOP VIEW G PACKAGE 28-LEAD PLASTIC SSOP 28 27 26 25 24 23 22 21 20 19 18 17 16 15 BOOST TGATE SW SYNC SHDN AGND UV INFET NC NC GND CAP FLAG 4.1V PGND BGATE GBIAS BOOSTC VCC BAT SPIN SENSE BAT2 PROG VC VFB 3CELL 4.2V NOTE: LT1505CG-1 DOES NOT HAVE INPUT CURRENT LIMITING FUNCTION. ELECTRICAL CHARACTERISTICS PACKAGE/ORDER INFORMATION The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 18V, VBAT = 12.6V, VCLN = VCC (LT1505), no load on any outputs unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Overall Supply Current VCC ≤ 24V q 12 15 mA Sense Amplifier CA1 Gain and Input Offset Voltage 11V ≤ VCC ≤ 24V , 0V ≤ VBAT ≤ 20V (With RS2 = 200Ω, RS3 = 200Ω)RPROG = 4.93k 95 100 105 mV (Measured across RS1, Figure 1) (Note 2) RPROG = 4.93k q 92 108 mV RPROG = 49.3k 7 10 13 mV BOOST Pin Current VBOOST = VSW + 8V, 0V ≤ VSW ≤ 20V TGATE High 2 3 mA TGATE Low 2 3 mA BOOSTC Pin Current VBOOSTC = VCC + 8V 1 mA Reference Reference Voltage (Note 3) RPROG = 4.93k, Measured at VFB with VA 2.453 2.465 2.477 V Supplying IPROG and Switching Off Reference Voltage Tolerance 11V ≤ VCC ≤ 24V q 2.441 2.489 V |
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