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MAX1853EXT Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX1853EXT Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 8 page SC70 Inverting Charge Pumps with Shutdown _______________________________________________________________________________________ 7 Table 2. Capacitor Selection to Minimize Output Resistance Table 3. Capacitor Selection to Minimize Capacitor Size Table 1. Low-ESR Capacitor Manufacturers PART FREQUENCY (kHz) CAPACITOR (µF) TYPICAL ROUT ( Ω) MAX1852 50 4.7 15 MAX1853 200 1 15 PART FREQUENCY (kHz) CAPACITOR (µF) TYPICAL ROUT ( Ω) MAX1852 50 3.3 20 MAX1853 200 0.68 20 714-960-6492 803-626-3123 603-224-1430 714-960-6492 803-626-3123 FAX PHONE 803-946-0690 714-969-2491 603-224-1961 803-946-0690 714-969-2491 X7R X7R 593D, 595D series 267 series TPS series SERIES Matsuo AVX Sprague Matsuo AVX MANUFACTURER PRODUCTION METHOD Surface-Mount Tantalum Surface-Mount Ceramic MAX1852 MAX1853 4 3 1 VOUT = (2VIN) - (VFD1) - (VFD2) C2 +VIN C1 5 2 6 VOUT = -VIN C4 D1 D1, D2 = 1N4148 C3 D2 SHDN Figure 6. Combined Doubler and Inverter MAX1852 MAX1853 2 1 GND OUT V+ RL Figure 7. Heavy Load Connected to a Positive Supply TRANSISTOR COUNT: 252 MAX1852 MAX1853 MAX1852 MAX1853 4 1 VOUT C2 4 +VIN C1 C1 5 5 22 6 3 3 6 1 VOUT = -VIN ROUT = ROUT OF SINGLE DEVICE NUMBER OF DEVICES … … SHDN Figure 5. Paralleling MAX1852/MAX1853s to Reduce Output Resistance Chip Information MAX1852 MAX1853 MAX1852 MAX1853 4 1 VOUT C2 4 +VIN C1 C2 SHDN C1 55 22 6 33 6 1 VOUT = -nVIN … … Figure 4. Cascading MAX1852/MAX1853s to Increase Output Voltage |
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