AL1906 Service Guide
Page 45
...: TSUM16AK Document Number POWER Monday, May 09, 2005 Sheet VCC3.3 1 of VCC3.3 4 Rev A 5 44 D704 SMAL140 P.S: The 1N4148 Vf=0.7V~1V can not meet LDO spec. The BAT42, Vf is about 200mA and 1.8V is OK but the If=200mA(forward current) can 't meet current... spec. Power +5V C701 NC U701SOT-223 NC/LT1117-18 3 VI VO 2 VO 4 C703 + 100uF/25V +3V3 C704 NC +3V3 H1 8 7 6 99 18 27 36 5 4 5 4 TP ...
...: TSUM16AK Document Number POWER Monday, May 09, 2005 Sheet VCC3.3 1 of VCC3.3 4 Rev A 5 44 D704 SMAL140 P.S: The 1N4148 Vf=0.7V~1V can not meet LDO spec. The BAT42, Vf is about 200mA and 1.8V is OK but the If=200mA(forward current) can 't meet current... spec. Power +5V C701 NC U701SOT-223 NC/LT1117-18 3 VI VO 2 VO 4 C703 + 100uF/25V +3V3 C704 NC +3V3 H1 8 7 6 99 18 27 36 5 4 5 4 TP ...