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FAN48630UC37AX Datasheet(PDF) 3 Page - Fairchild Semiconductor

Part # FAN48630UC37AX
Description  2.5 MHz, 1500 mA, Synchronous TinyBoost??Regulator with Bypass Mode
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN48630UC37AX Datasheet(HTML) 3 Page - Fairchild Semiconductor

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© 2011 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN48630 • Rev. 1.0.1
3
Pin Configuration
AGND
VIN
VSEL
PG
AGND
PGND
SW
VOUT
EN
B1
B2
C2
A1
A2
B3
A3
C3
D1
D2
D3
C1
A4
B4
C4
D4
BYP
Figure 3. Top Through View (Bumps Down)
Figure 4. Bottom View (Bumps Up)
Pin Definitions
Pin #
Name
Description
A1
EN
Enable. When this pin is HIGH, the circuit is enabled.
A2
PG
Power Good. This is an open-drain output. PG is actively pulled LOW if output falls out of
regulation due to overload or if thermal protection threshold is exceeded.
A3–A4
VIN
Input Voltage. Connect to Li-Ion battery input power source.
B1
VSEL
Output Voltage Select. When boost is running, this pin can be used to select output voltage.
B2, C2
D1
AGND
Analog Ground. This is the signal ground reference for the IC. All voltage levels are measured
with respect to this pin.
B3–B4
VOUT
Output Voltage. Place COUT as close as possible to the device.
C1
BYP
Bypass. This pin can be used to activate Forced Bypass Mode. When this pin is LOW, the
bypass switches (Q3 and Q1) are turned on and the IC is otherwise inactive.
C3–C4
SW
Switching Node. Connect to inductor.
D2–D4
PGND
Power Ground. This is the power return for the IC. The COUT bypass capacitor should be
returned with the shortest path possible to these pins.


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