ncp5252 ON Semiconductor, ncp5252 Datasheet - Page 3

• Manufacturer Part Number: ncp5252
• Description: 2a Integrated Sync Buck Converter
• Manufacturer: ON Semiconductor

PIN FUNCTION DESCRIPTION
Pin No
14−15
11−13
10
16
17
1
2
3
4
5
6
7
8
9
FREQ_SET
EN/SKIP
PGOOD
Symbol
COMP
AGND
PGND
EPAD
BST
V
V
VO
FB
V5
LX
CC
CC
Internal LDO power supply
Top MOSFET driver input supply, a bootstrap capacitor connection between LX and this pin.
Power good indicator of the output voltage. High impedance (open drain) if power good (in regulation).
Low impedance if power not good.
This pin serves as two functions. Enable: Logic control for enabling the switcher. SKIP: Power saving
mode (Skip and Force PWM) programmable pin.
Output of the error amplifier.
Output voltage feed back.
Output voltage.
Analog ground.
Frequency selection pin,
0 V = 333k, No connect = 500 kHz, 5 V = 1.0 MHz
Power supply for analog circuit.
Ground reference and high−current return path for the bottom power MOSFET.
Switch node between the top MOSFET and bottom MOSFET.
Internal Main FET power supply
Connect to PGND for thermal enhancement. Exposed pad is not electrically connected.
COMP
FB
VO
AGND
Figure 2. NCP5252 Typical Application Circuits
NCP5252
http://onsemi.com
PGND
3
LX
Description
4.5 TO 13.2V
VOUT
GND