NCP3065 ON Semiconductor, NCP3065 Datasheet - Page 2

• Manufacturer Part Number: NCP3065
• Description: Up to 1.5 A Constant Current Switching Regulator for LEDs
• Manufacturer: ON Semiconductor

PIN DESCRIPTION
Pin No.
Comparator Inverting Input
Timing Capacitor
Switch Collector
1
2
3
4
5
6
7
8
Switch Emitter
GND
Timing Capacitor
Switch Collector
Switch Emitter
Inverting Input
Comparator
Pin Name
I
pk
Figure 2. Pin Connections
I
pk
GND
N.C.
V
Sense
Sense
CC
+V
N.C.
CC
2
3
4
1
(Top View)
8
7
6
5
Internal Darlington switch collector
Internal Darlington switch emitter
Timing Capacitor Oscillator Input, Timing Capacitor
Ground pin for all internal circuits
Inverting input pin of internal comparator
Voltage supply
Peak Current Sense Input to monitor the voltage drop across an external resistor to limit the peak
current through the circuit
Pin not connected
COMPARATOR
8
7
6
5
COMPARATOR
-
+
0.2 V
N.C.
I
V
Comparator
Inverting
Input
pk
CC
SET dominant
+
-
Figure 4. Block Diagram
NCP3065, NCV3065
Sense
http://onsemi.com
R
S
NCP3065
S
R
Q
Q
2
SET dominant
TSD
OSCILLATOR
REFERENCE
REGULATOR
Timing Capacitor
Switch Collector
NOTE:
0.235 V
Description
Switch Emitter
CT
EP Flag must be tied to GND Pin 4 on PCB
GND
Figure 3. Pin Connections
Ç Ç
Ç Ç
Ç Ç
Ç Ç
1
2
3
4
(Top View)
EP Flag
Switch Collector
Switch Emitter
Timing Capacitor
GND
Ç
Ç
Ç
Ç
N.C.
I
V
Comparator
Inverting
Input
pk
CC
Sense