LT1510-5 LINER [Linear Technology], LT1510-5 Datasheet
LT1510-5
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LT1510-5 Summary of contents
Page 1
... Ground sensing of current is not required and the battery’s negative terminal can be tied directly to ground. A saturat- ing switch running at 200kHz (500kHz for LT1510-5) gives high charging efficiency and small inductor size. A block- ing diode is not required between the chip and the battery because the chip goes into sleep mode and drains only 3 A when the wall adaptor is unplugged ...
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... Lead Temperature (Soldering, 10 sec).................. 300 ORDER PART TOP VIEW NUMBER 16 GND** LT1510CGN V 15 CC2 LT1510IGN 14 V CC1 LT1510-5CGN 13 PROG LT1510-5IGN BAT 10 9 GND** GN PART MARKING = 125 1510 1510I 15105 15105I ) = 28V, no load on any outputs, unless otherwise noted. (Notes 7, 8) ...
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... C T 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 ...
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... LT1510/LT1510-5 ELECTRICAL CHARACTERISTICS V = 16V 8V, V (maximum operating V CC BAT MAX PARAMETER Current Amplifier (CA2) Transconductance Maximum V for Switch OFF C I Current (Out of Pin) VC Voltage Amplifier (VA), 16-Pin Only Transconductance (Note 2) Output Source Current 10V CC OVP Input Bias Current The denotes specifications which apply over the specified temperature range ...
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... Pin Characteristic C –1.20 –1.08 –0.96 –0.84 –0.72 –0.60 –0.48 –0.36 –0.24 –0.12 0 0.12 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 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) VA OVP ...
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... LT1510/LT1510 TYPICAL PERFORMANCE CHARACTERISTICS Switch Current vs Boost Current vs Boost Voltage 16V 38V 40 BOOST 28V 35 18V 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 SWITCH CURRENT (A) 1510 G07 PIN FUNCTIONS GND: Ground Pin. SW: Switch Output. The Schottky catch diode must be placed with very short lead length in close proximity to SW pin and GND ...
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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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... The lockout voltage will be V For example, for a 24V adapter to start charging at 22V choose V Z low and charger off. Charging Current Programming The basic formula for charging current is (see Block Diagram): I BAT LT1510/LT1510-5 is released, as set by the 0 ...
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... LT1510/LT1510 APPLICATIONS INFORMATION where R is the total resistance from PROG pin to PROG ground. For example, 1A charging current is needed. 2 465 V 2000 PROG 1 A Charging current can also be programmed by pulse width modulating I with a switch PROG higher than a few kHz (Figure 4). Charging current will be proportional to the duty cycle of the switch with full current at 100% duty cycle ...
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... R 1 All battery chargers with fast-charge rates require some means to detect full charge state in the battery to terminate the high charging current. NiCd batteries are typically charged at high current until temperature rise or battery LT1510/LT1510-5 pin low with an open collector or drain 1N5819 ...
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... Performance Characteristics section BIAS V BAT DRIVER I BAT SENSE R = Switch ON resistance 0. Effective switch overlap time 10ns 200kHz (500kHz for LT1510-5) R4 470k NEGATIVE EDGE TO TIMER R1(V ) BAT (R2 + R3)(0.18 ) 1510 F06 BAT 012 I BAT 2 V BAT V 1 ...
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... Vias should be used to connect board layers together. Planes under the charger area can be cut away from the rest of the board and connected with vias to form both a (see Figure 8). BAT 045 W LT1510/LT1510-5 required is 045 LT1510 C1 ...
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... LT1510/LT1510 APPLICATIONS INFORMATION 90 NOTE: PEAK DIE TEMPERATURE WILL BE ABOUT 10 C HIGHER THAN LEAD TEMPER- 80 ATURE AT 1.3A CHARGING CURRENT 70 2-LAYER BOARD 60 50 4-LAYER BOARD I = 1.3A 40 CHRG V = 16V 8.4V BAT BOOST BAT BOARD AREA (IN ) Figure 10. LT1510 Lead temperature low thermal resistance system and to act as a ground plane for reduced EMI ...
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... 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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... LT1510/LT1510-5 U TYPICAL APPLICATION Adjustable Voltage Regulator with Precision Adjustable Current Limit 0.22 F 1N5819 30 H 1N914 CURRENT LIMIT LEVEL = PACKAGE DESCRIPTION 0.053 – 0.069 0.010 – 0.020 45 (1.346 – 1.752) (0.254 – 0.508) 0.008 – 0.010 0 – 8 TYP (0.203 – 0.254) 0.014 – 0.019 0.016 – ...