ncp1529 ON Semiconductor, ncp1529 Datasheet - Page 2

• Manufacturer Part Number: ncp1529
• Description: High Efficiency Dc-dc Converters
• Manufacturer: ON Semiconductor

1. Exposed pad for UDFN6 package, named Pin 7, must be connected to system ground.
PIN FUNCTION DESCRIPTION
TSOP-5
Pin
1
2
3
4
5
Figure 2. Pin Connections - TSOP-5
(Note 1)
UDFN6
2,4,7
Pin
6
5
3
1
GND
SW
EN
1
2
3
Pin Name
(Top View)
GND
VIN
SW
EN
FB
100
90
80
70
60
50
40
30
20
10
0
5
0
4
Power Ground
Analog Output
Analog Input
Analog Input
FB
VIN
Power Input
Analog /
Analog /
Figure 4. Efficiency vs Output Current
Type
V
IN
PIN CONNECTIONS
PERFORMANCES
http://onsemi.com
= 3.6 V, V
Enable for switching regulators. This pin is active HIGH and is turned off by
logic LOW on this pin.
This pin is the GND reference for the NFET power stage and the analog
section of the IC. The pin must be connected to the system ground.
Connection from power MOSFETs to the Inductor.
Power supply input for the PFET power stage, analog and digital blocks. The
pin must be decoupled to ground by a 4.7 mF ceramic capacitor.
Feedback voltage from the output of the power supply. This is the input to the
error amplifier.
NCP1529
I
OUT
500
2
(mA)
OUT
= 3.3 V
Figure 3. Pin Connections - UDFN6
GND
VIN
FB
Description
1
2
3
1000
(Top View)
7
6
5 SW
4
EN
GND