NCP1010 ON Semiconductor, NCP1010 Datasheet - Page 3

• Manufacturer Part Number: NCP1010
• Description: Self-supplied Monolithic Switcher For Low Standby-power Offline Smps
• Manufacturer: ON Semiconductor

GND
V
PIN FUNCTION DESCRIPTION
(SOT-223)
NC
FB
CC
Pin No.
1
-
-
2
3
-
-
4
1
2
3
4
*Vclamp = VCC
Vclamp*
IV
CC
4 V
18 k
PDIP-7/Gull Wing)
I?
(PDIP-7,
V
Pin No.
CC
OFF
1
2
3
4
5
-
7
8
Error flag armed?
+ 200 mV (8.7 V Typical)
NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
Startup Source
Management
EMI Jittering
UVLO
Pin Name
Overload?
Figure 2. Simplified Internal Circuit Architecture
Drain
GND
GND
GND
V
NC
FB
CC
-
High when V
Drain
Powers the Internal Circuitry
Feedback Signal Input
Drain Connection
65, 100 or
http://onsemi.com
Iref = 7.4 mA
130 kHz
The IC Ground
The IC Ground
The IC Ground
Clock
Function
CC
0.5 V
IV
Soft-Start
t 3 V
-
-
CC
3
-
+
Set
+
-
DCmax = 65%
Startup Sequence
Overload
R
Flip-Flop
Reset
Reset
S
Q
This pin is connected to an external capacitor of typic‐
ally 10 mF. The natural ripple superimposed on the
V
proved standby performance, an auxiliary V
connected to Pin 1. The V
shunt which serves as an opto fail-safe protection.
By connecting an optocoupler to this pin, the peak
current setpoint is adjusted accordingly to the output
power demand.
The internal drain MOSFET connection.
CC
participates to the frequency jittering. For im‐
Q
Driver
V
-
+
CC
Description
250 ns
L.E.B.
CC
-
-
-
-
-
also includes an active
Rsense
Drain
CC
8
7
5
can be
Drain
GND
GND