THV3056_Rev.2.00_E
● Low Voltage LDO(of 3.3V output)
Figure 4 shows the circuit diagram of Low voltage LDO. Applies the voltage of 5V to V_LLDO pin and outputs 3.3V.
When using the external 3.3V without LDO, short-circuit V_LLDO pin and OUT_LLDO pin and apply 3.3V.
V_LLDO
(5V Input)
1uA
SS_LLDO
VREF12
OUT_LLDO
(Output for 3.3V LDO)
1.2V
Clamp Circuit
≒2.2V
Figure 4. Low voltage LDO Circuit
● TCON Reset Circuit
TCON reset circuit generates a signal of High level, when the startup of OUT_LLDO and VGH are completed normally.
(See Figure 5, Figure 6.)
OUT_LLDO
(Output for 3.3V LDO)
80%
TCON_XRST
VREF
VGH_OK
Figure 5. TCON Reset Circuit
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THine Electronics, Inc.
Copyright©2010 THine Electronics, Inc.
THINE [ THINE ELECTRONICS, INC. ]
