Document
NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
Self-Supplied Monolithic Switcher for Low StandbyPower Offline SMPS
The NCP101X series integrates a fixed−frequency current−mode controller and a 700 V MOSFET. Housed in a PDIP−7 or SOT−223 package, the NCP101X offers everything needed to build a rugged and low−cost power supply, including soft−start, frequency jittering, short−circuit protection, skip−cycle, a maximum peak current setpoint and a Dynamic Self−Supply (no need for an auxiliary winding).
Unlike other monolithic solutions, the NCP101X is quiet by nature: during nominal load operation, the part switches at one of the available frequencies (65 − 100 − 130 kHz). When the current setpoint falls below a given value, e.g. the output power demand diminishes, the IC automatically enters the so−called skip−cycle mode and provides excellent efficiency at light loads. Because this occurs at typically 1/4 of the maximum peak value, no acoustic noise takes place. As a result, standby power is reduced to the minimum without acoustic noise generation.
Short−circuit detection takes place when the feedback signal fades away, e.g. in true short−circuit conditions or in broken Optocoupler cases. External disabling is easily done either simply by pulling the feedback pin down or latching it to ground through an inexpensive SCR for complete latched−off. Finally soft−start and frequency jittering further ease the designer task to quickly develop low−cost and robust offline power supplies.
For improved standby performance, the connection of an auxiliary winding stops the DSS operation and helps to consume less than 100 mW at high line. In this mode, a built−in latched overvoltage protection prevents from lethal voltage runaways in case the Optocoupler would brake. These devices are available in economical 8−pin dual−in−line and 4−pin SOT−223 packages.
www.onsemi.com
MARKING DIAGRAMS
4
4
SOT−223
CASE 318E
1
ST SUFFIX
AYW
101xy G G
1
8 1
PDIP−7 CASE 626A AP SUFFIX
P101xAPyy AWL
YYWWG
1
x
= Current Limit (0, 1, 2, 3, 4)
y
= Oscillator Frequency
A (65 kHz), B (100 kHz), C (130 kHz)
yy
= 06 (65 kHz), 10 (100 kHz), 13 (130 kHz)
A
= Assembly Location
WL = Wafer Lot
YY, Y = Year
WW, W = Work Week
G or G = Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 21 of this data sheet.
Features
• Built−in 700 V MOSFET with Typical RDSon of 11 W
and 22 W
• Large Creepage Distance Between High−Voltage Pins • Current−Mode Fixed Frequency Operation:
65 kHz – 100 kHz − 130 kHz
• Skip−Cycle Operation at Low Peak Currents Only:
No Acoustic Noise!
• Dynamic Self−Supply, No Need for an Auxiliary
Winding
• Internal 1.0 ms Soft−Start • Latched Overvoltage Protection with Auxiliary
Winding Operation
• Frequency Jittering for Better EMI Signature
• Auto−Recovery Internal Output Short−Circuit
Protection
• Below 100 mW Standby Power if Auxiliary Winding
is Used
• Internal Temperature Shutdown • Direct Optocoupler Connection • SPICE Models Available for TRANsient Analysis • These are Pb−Free and Halide−Free Devices
Typical Applications
• Low Power AC/DC Adapters for Chargers • Auxiliary Power Supplies (USB, Appliances,TVs, etc.)
© Semiconductor Components Industries, LLC, 2014
1
October, 2016 − Rev. 24
Publication Order Number: NCP1010/D
NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
PIN CONNECTIONS
PDIP−7
VCC 1 NC 2
8 GND 7 GND
GND 3
FB 4
5 DRAIN
(Top View)
SOT−223
VCC 1
FB 2
4 GND
DRAIN 3
(Top View)
Indicative Maximum Output Power from NCP1014
RDSon − Ip
230 Vac
100 − 250 Vac
11 W − 450 mA DSS
14 W
6.0 W
11 W − 450 mA Auxiliary Winding
19 W
8.0 W
1. Informative values only, with: Tamb = 50°C, Fswitching = 65 kHz, circuit mounted on minimum copper area as recommended.
Vout +
100−250 Vac
Quick Selection Table RDSon [W] Ipeak [mA] Freq [kHz]
+
1
8
2
7
3
+
4
5
NCP101X
Figure 1. Typical Application Example
GND
NCP1010
NCP1011
22
100
250
65 100 130 65 100 130
NCP1012
250 65 100 130
NCP1013 11 350
65 100 130
NCP1014
450 65 100
www.onsemi.com 2
NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
PIN FUNCTION DESCRIPTION
Pin No. (SOT−223)
Pin No. (PDIP−7)
Pin Name
Function
Description
1
1
VCC
Powers the Internal Circuitry This pin is connected to an external capacitor of typic-
ally 10 mF. The natural ripple superimposed on the
VCC participates to the frequency jittering. For improved standby performance, an auxiliary VCC can be connected to Pin 1. The VCC also includes an active shunt which serves as an opto fail−safe protection.
−
2
NC
−
−
−
3
GND
The IC Ground
−
2
4
FB
Feedback Signal Input
By connecting an optocoupler to this pin, the peak
current setpoint is adjusted accordingly to the output
power.