LTC1044A Linear Technology, LTC1044A Datasheet
LTC1044A
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LTC1044A Summary of contents
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... LTC1044A • TA01 D ESCRIPTIO The LTC1044A is a monolithic CMOS switched-capacitor voltage converter. It plugs in for ICL7660/LTC1044 in applications where higher input voltage (up to 12V) is needed. The LTC1044A provides several conversion func- tions without using inductors. The input voltage can be inverted (V OUT ( OUT ...
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... Input Voltage on Pins 1, 6 and 7 (Note 2) .............................. – 0.3V < V Current into Pin 6 ................................................. 20 A Output Short-Circuit Duration + V 6.5V ................................................. Continuous Operating Temperature Range LTC1044AC ............................................ LTC1044AI ........................................ – Storage Temperature Range ................ – 150 C Lead Temperature (Soldering, 10 sec)................. 300 C ELECTRICAL C HARA TERISTICS C SYMBOL PARAMETER I ...
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... EFF f = 1kHz OSC 100k LOAD CURRENT (mA) LTC1044A • TPC06 Power Conversion Efficiency + vs Load Current 10V 300 270 P EFF 240 210 I S 180 150 120 25° 20kHz ...
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... LTC1044A • TPC13 Oscillator Frequency vs Supply Voltage 100k T = 25° OSC 10k 1k 0. SUPPLY VOLTAGE (V) LTC1044A • G16 Using the Test Circuit Output Voltage + vs Load Current SLOPE = 80 –1 –2 –3 –4 – ...
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... PPLICATI S I FOR ATIO A Theory of Operation To understand the theory of operation of the LTC1044A, a review of a basic switched-capacitor building block is helpful. In Figure 1, when the switch is in the left position, capacitor C1 will charge to voltage V1. The total charge on C1 will C1V1. The switch then moves to the right, discharg- ing C1 to voltage V2 ...
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... OSC (7) Figure 3. LTC1044A Switched-Capacitor Voltage Converter Block Diagram LV (Pin 6) The internal logic of the LTC1044A runs between (pin 6). For V greater than or equal to 3V, an internal switch shorts LV to GND (pin 3). For V LV pin should be tied to GND. For V to 3V, the LV pin can be tied to GND or left floating. ...
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... TO 12V 1N5817 1N5817 6 + REQUIRED FOR V < LTC1044A • F07 Figure 7. Voltage Doubler (3V TO 24V LTC1044A LTC1044A • F08 + REQUIRED FOR + < MAX 10 F Figure 8. Ultra-Precision Voltage Divider V = 2(V – 1) OUT ...
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... LTC1044A • F09 Figure 9. Battery Splitter *THE EXCLUSIVE NOR GATE SYNCHRONIZES BOTH LTC1044As TO MINIMIZE RIPPLE (output common). If the input voltage between pin 8 and pin 5 is less than 6V, pin 6 should also be connected to pin 3 as shown by the dashed line. ...
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... PRESSURE TRANSDUCER E 0V 39k C –1.2V 0.1 F LTC1044A OUTPUT LTC1044A LTC1044 • F12 100 F – – GAIN TRIM 46k* LT1413 100 * – LTC1044A • F13 OUTPUT 0V TO 3.5V 0psi to 350psi 0.047 F 9 ...
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... OUTPUT 100 F 4. – REF AMP + LM10 2 – OP AMP 100k 150k LTC1044A • F14 2N2219 OUT 100 120k LOAD 7 30k 50k V AT 1mA = 1mV DROPOUT OUTPUT V AT 10mA = 15mV DROPOUT ADJUST V AT 100mA = 95mV DROPOUT LTC1044A • F15 ...
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... S8 Package 8-Lead Plastic SOIC 0.228 – 0.244 (5.791 – 6.197) 45 0.053 – 0.069 (1.346 – 1.752) 0°– 8° TYP 0.014 – 0.019 (0.355 – 0.483) LTC1044A 0.400 MAX 6 5 0.250 ± 0.010 (6.350 ± 0.254 0.130 ± 0.005 (3.302 ± 0.127) ...
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... LTC1044A NORTHEAST REGION Linear Technology Corporation One Oxford Valley 2300 E. Lincoln Hwy.,Suite 306 Langhorne, PA 19047 Phone: (215) 757-8578 FAX: (215) 757-5631 Linear Technology Corporation 266 Lowell St., Suite B-8 Wilmington, MA 01887 Phone: (508) 658-3881 FAX: (508) 658-2701 FRANCE Linear Technology S.A.R.L. Immeuble "Le Quartz" ...