Datasheet Linear Technology LT1613 (Linear Technology) - 8
| Manufacturer | Linear Technology |
| Description | 1.4MHz, Single Cell DC/DC Converter in 5-Lead SOT-23 |
| Pages / Page | 12 / 8 — OPERATIO. Figure 10. 5V to 12V Boost Converter with 4.7. F Ceramic Output … |
| Revision | S |
| File Format / Size | PDF / 302 Kb |
| Document Language | English |
OPERATIO. Figure 10. 5V to 12V Boost Converter with 4.7. F Ceramic Output Capacitor, CPL Added to Increase Phase Margin
Model Line for this Datasheet
Text Version of Document
LT1613
U OPERATIO
L1 C3 L1 10µH D1 V 1µF OUT V 22µH IN V 12V IN 5V 3V TO 130mA C 10V PL + L2 C1 V C IN SW 200pF D1 + C1 V PL IN SW 22µH 22µF 330pF R1 22µF LT1613 R3 107k C2 LT1613 R3 10k 4.7µF 10k SHUTDOWN SHDN FB VOUT SHUTDOWN SHDN FB GND 5V R2 GND R1 R2 12.3k 37.4k C2 12.1k 10µF C1: AVX TAJB226M010 C1: AVX TAJB226M010 C2: TAIYO YUDEN EMK325BJ475MN C2: TAIYO YUDEN LMK325BJ106MN D1: MOTOROLA MBR0520 C3: TAIYO YUDEN LMK212BJ105MG 1613 F10 L1: MURATA LQH3C100 1613 F13 D1: MOTOROLA MBR0520 L1, L2: MURATA LQH3C220
Figure 10. 5V to 12V Boost Converter with 4.7
µ
F Ceramic Output Capacitor, CPL Added to Increase Phase Margin Figure 13. 5V Output SEPIC with Ceramic Output Capacitor. CPL Adds Phase Margin
VOUT VOUT 100mV/DIV 50mV/DIV AC COUPLED AC COUPLED 130mA 120mA LOAD CURRENT LOAD CURRENT 10mA 20mA 200µs/DIV 1613 F11 200µs/DIV 1613 F14
Figure 11. 5V to 12V Boost Converter Figure 14. 5V Output SEPIC with 10
µ
F with 4.7
µ
F Ceramic Output Capacitor Ceramic Output Capacitor. No CPL. VIN = 4V
VOUT VOUT 100mV/DIV 50mV/DIV AC COUPLED AC COUPLED 130mA 120mA LOAD CURRENT LOAD CURRENT 10mA 20mA 200µs/DIV 1613 F12 200µs/DIV 1613 F15
Figure 12. 5V to 12V Boost Converter with 4.7
µ
F Figure 15. 5V Output SEPIC with 10
µ
F Ceramic Output Ceramic Output Capacitor and 200pF Phase-Lead Capacitor, 330pF CPL and 10k in Series with FB Pin Capacitor CPL and 10k in Series with FB Pin
8
U OPERATIO
L1 C3 L1 10µH D1 V 1µF OUT V 22µH IN V 12V IN 5V 3V TO 130mA C 10V PL + L2 C1 V C IN SW 200pF D1 + C1 V PL IN SW 22µH 22µF 330pF R1 22µF LT1613 R3 107k C2 LT1613 R3 10k 4.7µF 10k SHUTDOWN SHDN FB VOUT SHUTDOWN SHDN FB GND 5V R2 GND R1 R2 12.3k 37.4k C2 12.1k 10µF C1: AVX TAJB226M010 C1: AVX TAJB226M010 C2: TAIYO YUDEN EMK325BJ475MN C2: TAIYO YUDEN LMK325BJ106MN D1: MOTOROLA MBR0520 C3: TAIYO YUDEN LMK212BJ105MG 1613 F10 L1: MURATA LQH3C100 1613 F13 D1: MOTOROLA MBR0520 L1, L2: MURATA LQH3C220
Figure 10. 5V to 12V Boost Converter with 4.7
µ
F Ceramic Output Capacitor, CPL Added to Increase Phase Margin Figure 13. 5V Output SEPIC with Ceramic Output Capacitor. CPL Adds Phase Margin
VOUT VOUT 100mV/DIV 50mV/DIV AC COUPLED AC COUPLED 130mA 120mA LOAD CURRENT LOAD CURRENT 10mA 20mA 200µs/DIV 1613 F11 200µs/DIV 1613 F14
Figure 11. 5V to 12V Boost Converter Figure 14. 5V Output SEPIC with 10
µ
F with 4.7
µ
F Ceramic Output Capacitor Ceramic Output Capacitor. No CPL. VIN = 4V
VOUT VOUT 100mV/DIV 50mV/DIV AC COUPLED AC COUPLED 130mA 120mA LOAD CURRENT LOAD CURRENT 10mA 20mA 200µs/DIV 1613 F12 200µs/DIV 1613 F15
Figure 12. 5V to 12V Boost Converter with 4.7
µ
F Figure 15. 5V Output SEPIC with 10
µ
F Ceramic Output Ceramic Output Capacitor and 200pF Phase-Lead Capacitor, 330pF CPL and 10k in Series with FB Pin Capacitor CPL and 10k in Series with FB Pin
8
