Datasheet LT1931, LT1931A (Analog Devices) - 10

LT1931/LT1931A
U TYPICAL APPLICATIO S 2.2MHz, 5V to –5V Converter Uses Tiny Chip Inductors Efficiency
C2 80 L1 L2 1µF 3.3µH 3.3µH VIN 5V 75 D1 VIN SW VOUT 70 –5V SHDN R1 200mA C4 65 C1 LT1931A 28.7k 68pF 2.2µF C3 NFB 4.7µF EFFICIENCY (%) GND R2 60 10k 55 C1: TAIYO YUDEN X5R JMK212BJ225MG 1931 TA06a 50 C2: TAIYO YUDEN X5R LMK212BJ105MG 0 50 100 150 200 250 C3: TAIYO YUDEN X5R JMK212BJ475MG LOAD CURRENT (mA) D1: ON SEMICONDUCTOR MBR0520 L1, L2: PANASONIC ELJPC3R3MF 1931 TA06b
SLIC Power Supply with – 33V and – 68V Outputs, Uses Soft-Start
L1 R1 22µH V 1Ω IN 12V C1 C2 4.7µF 1µF VIN SW 16V 35V D1 RSS LT1931 3 2 15k COM V C4 SS SHDN NFB GND 4.7µF 1 35V R2 R3 VOUT1 1k 25.5k –33V CSS 100mA* 68nF C6 C3 R4 1000pF 1µF 2.7k 35V D2 3 2 C5 *TOTAL OUTPUT POWER NOT TO EXCEED 3.3W 4.7µF C1 TO C5: X5R OR X7R 35V V 1 OUT2 D1, D2: BAV99 OR EQUIVALENT –66V 1931 TA08 L1: SUMIDA CR43-220 48mA* 1931fa 10