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NCP1512 Datasheet(PDF) 3 Page - ON Semiconductor

Part No. NCP1512
Description  PWM Buck Converter
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP1512 Datasheet(HTML) 3 Page - ON Semiconductor

 
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NCP1512
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3
PIN FUNCTION DESCRIPTION
Pin No.
Symbol
Type
Description
A1
GNDP
Power Ground
Ground Connection for the NFET Power Stage.
A2
LX
Analog Output
Connection from Power Pass Elements to the Inductor.
A3
VCC
Analog Input
Power Supply Input for Power and Analog VCC.
B1
SYNC
Analog Input
Synchronization input for the PWM converter. If a clock signal is present, the
converter uses the rising edge for the turn on. If this pin is low, the converter is in
the Pulsed mode. If this pin is high, the converter uses the internal oscillator for
the PWM mode. This pin contains an internal pull down resistor.
B2
GNDA
Analog Ground
Ground connection for the Analog Section of the IC. This is the GND for the FB,
Ref, Sync, CB, and SHD pins.
B3
FB
Analog Input
Feedback Voltage from the Output of the Power Supply.
C1
SHD
Analog Input
Enable for Switching Regulator. This Pin is Active High to enable the NCP1512.
The SHD Pin has an internal pull down resistor to force the converter off if this pin
is not connected to the external circuit.
C2
CB1
Analog Input
Selects Vout. This pin contains an internal pull up resistor.
C3
CB0
Analog Input
Selects Vout. This pin contains an internal pull down resistor.
MAXIMUM RATINGS (Note 1)
Rating
Symbol
Value
Unit
Maximum Voltage All Pins
Vmax
5.5
V
Maximum Operating Voltage All Pins
Vmax
5.2
V
Thermal Resistance, Junction-to-Air
Rja
159
°C/W
Operating Ambient Temperature Range
TA
-30 to 85
°C
ESD Withstand Voltage
Human Body Model (Note 1)
Machine Model (Note 1)
VESD
> 2500
> 100
V
Moisture Sensitivity
MSL
Level 1
Storage Temperature Range
Tstg
-55 to 150
°C
Junction Operating Temperature
TJ
-30 to 125
°C
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model 2,000 V per MIL-STD-883, Method 3015.
Machine Model Method 200 V.


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