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16
AP1117D33L (U701) and AP1117E18LA (U704):
DC power convert, convert to 3.3V and 1.8V
AP1117 is a low dropout positive adjustable or fixed-mode regulator with 1A output current capability. The product is
specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus
termination and low current 3.3V logic supply. AP1117 is also well suited for other applications such as VGA cards.
AP1117 is guaranteed to have lower than 1.4V dropout at full load current making it ideal to provide well-regulated
outputs of 1.25 to 5.0 with 6.4V to 18V input supply.
Pin Descriptions
Name
I/O
Pin #
Function
Adj (GND)
I
1
A resistor divider from this pin to the Vout pin and ground sets the output voltage.
(Ground only for Fixed-Mode)
Vout
O
2
The output of the regulator. A minimum of 10uF capacitor (0.15
Ω
≤
ESR
≤
20
Ω
)
must be connected from this pin to ground to insure stability.
Vin
I
3
The input pin of regulator. Typically a large storage capacitor (0.15
Ω
≤
ESR
≤
20
Ω
) is connected from this pin to ground to insure that the input voltage does
not sag below the minimum dropout voltage during the load transient response.
This pin must always be 1.3V higher than Vout in order for the device to regulate
properly.
Summary of Contents for VX2413wm-2
Page 7: ...7 2 Specification...
Page 14: ...14 Pin Assignment...
Page 15: ...15...
Page 29: ...29 6 Troubleshooting Flow Chart...
Page 41: ...41 9 PCB Layout Diagrams 9 1 Main Board...
Page 42: ...42...
Page 43: ...43 9 2 Power Board...
Page 44: ...44...
Page 45: ...45 9 3 Key Board...
Page 46: ...46 10 Exploded Diagram and Spare Parts List 10 1 EPL...