LT1510-5IGN#TRPBF Linear Technology, LT1510-5IGN#TRPBF Datasheet
LT1510-5IGN#TRPBF
Specifications of LT1510-5IGN#TRPBF
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LT1510-5IGN#TRPBF Summary of contents
Page 1
... A when the wall adaptor is unplugged. Soft start and shutdown features are also provided. The LT1510 is available in a 16-pin fused lead power SO package with a thermal resistance of 50 C/W, an 8-pin SO and a 16-pin PDIP. ...
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... BAT 2 U RATINGS Operating Ambient Temperature Range Commercial ............................................. Extended Commercial (Note 7) ........... – ................... 30V CC Industrial (Note 8) .............................. – Operating Junction Temperature Range LT1510C (Note 7) ............................. – 125 C LT1510I ............................................ – 125 C Lead Temperature (Soldering, 10 sec).................. 300 ORDER PART TOP VIEW NUMBER 16 GND** LT1510CGN V 15 ...
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... PROG VA Supplying I and Switch OFF PROG 8V V 28V 28V 125 28V, T < LT1510 LT1510-5 All Conditions Temperature, LT1510 CC LT1510, T < LT1510-5 LT1510-5, T < LT1510 LT1510 (Note 8) A LT1510-5 (Note 9) LT1510/LT1510-5 MIN TYP MAX UNITS 6 0.3 0.5 2 mA/A 2 100 A 4 ...
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... Thermally Limited Maximum Charging Current, 16-Pin GN 1.5 1.3 4V BATTERY 1.1 8V BATTERY 0.9 12V BATTERY 0 C AMAX T = 125 C 16V BATTERY JMAX 0 INPUT VOLTAGE (V) 1510 G13 UNITS mho mho BAT LT1510 • TPC14 ...
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... V (V) C 1510 G10 LT1510/LT1510-5 Switching Frequency vs Temperature 210 205 200 195 190 185 180 100 – 120 140 TEMPERATURE ( C) 1510 G05 (Voltage Amplifier) ...
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... BOOST CC BAT is 55V. age reaches the preset value not used, the OVP pin BOOST should be grounded BOOST Maximum Duty Cycle 125 150 (V) BOOST 1510 G14 stays close to 2.465V shorted to GND 22 LT1510 • TPC15 C ...
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... R3 – CA2 + V REF PROG R C PROG I PROG Test Circuit 1 LT1510 – CA1 CA2 1k + 60k V REF PROG 0. 3.3k PROG + LT1006 LT1010 – 1k 20k LT1510/LT1510 BOOST SENSE I PROG I CA1 R BAT S1 – BAT I PROG = 500 A/A I BAT + 0VP VA V REF – 2.465V g = 0.64 m CHARGING CURRENT I ...
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... LT1510/LT1510-5 TEST CIRCUITS U OPERATIO The LT1510 is a current mode PWM step-down (buck) switcher. The battery DC charging current is programmed by a resistor R (or a DAC output current) at the PROG PROG pin (see Block Diagram). Amplifier CA1 converts the charging current through much lower current ...
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... OUT raised to 4 with a bead of inductor, only 5% of the current ripple will flow in the battery. Soft Start The LT1510 is soft started by the 0.1 F capacitor on V pin. On start-up, V pin voltage will rise quickly to 0.5V, C then ramp at a rate set by the internal 45 A pull-up current and the external capacitor ...
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... PROG 240 Lithium-ion batteries typically require float voltage accu- racy 2%. Accuracy of the LT1510 OVP voltage is 0. and 1% over full temperature. This leads to the possibility that very accurate (0.1%) resistors might be needed for R3 and R4. Actually, the temperature of the LT1510 will rarely exceed float mode because charging currents have tapered off to a low level ...
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... D2 generates hysteresis in the trip level to avoid multiple comparator transitions. Nickel-Cadmium and Nickel-Metal-Hydride Charging The circuit in Figure 6 uses the 8-pin LT1510 to charge NiCd or NiMH batteries up to 12V with charging currents pin will be pulled of 0.5A when and 50mA when Q1 is off. ...
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... Thermal Calculations If the LT1510 is used for charging currents above 0.4A, a thermal calculation should be done to ensure that junction temperature will not exceed 125 C. Power dissipation in the IC is caused by bias and driver current, switch resis- tance, switch transition losses and the current sense resistor ...
Page 13
... Total power in the IC is: 0.17 + 0.13 + 0.32+ 0.26 = 0.88W Temperature rise will be (0.88W)(50 C/ This assumes that the LT1510 is properly heat sunk by con- necting the four fused ground pins to the expanded traces and that the PC board has a backside or internal plane for heat spreading ...
Page 14
... As it turns out, duty cycle can be extended to 93% by restricting boost voltage to 5V instead of using V is normally done. This lower boost voltage V 8) also reduces power dissipation in the LT1510 win-win decision. Even Lower Dropout For even lower dropout and/or reducing heat on the board, the input diode D3 (Figures 2 and 6) should be replaced with a FET ...
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... DWG # 05-08-1610) 0.053 – 0.069 (1.346 – 1.752) 0.004 – 0.010 (0.101 – 0.254) 0 – 8 TYP 0.014 – 0.019 0.050 (0.355 – 0.483) (1.270) BSC LT1510/LT1510 1510 F11 0.189 – 0.196* (4.801 – 4.978 0.229 – 0.244 0.150 – 0.157** (5.817 – ...
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... Step-Up Switching Regulator LT1376 500kHz Step-Down Switching Regulator LT1511 3A Constant-Voltage/Constant-Current Battery Charger LT1512 SEPIC Battery Charger Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977 www.linear-tech.com LT1510 SW V CC2 + 100 F V CC1 BOOST PROG 1k ...