NCP1215A
NCP1215A is Low Cost Variable OFF Time Switched Mode Power Supply Controller manufactured by onsemi.
Features http://onsemi. MARKING DIAGRAM
8 8 1 SOIC- 8 D SUFFIX CASE 751 1 6 TSOP- 6 (SOT23- 6, SC59- 6) FACAYW G G SN SUFFIX CASE 318G 1 1215A ALYW G
6 1
- -
- -
- -
- -
- -
- -
FAC = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb- Free Package (Note: Microdot may be in either location)
Variable OFF Time Control Method Very Low Current Consumption at Startup Natural Frequency Dithering for Improved EMI Signature Current Mode Control Operation Peak Current pression Reduces Transformer Noise Programmable Current Sense Resistor Peak Voltage Undervoltage Lockout Pb- Free Packages are Available
PIN CONNECTIONS
SOIC- 8 FB 1 8 7 6 5 (Top View) TSOP- 6 CS GND CT 1 2 3 (Top View) 6 5 4 Gate VCC FB NC NC VCC Gate
CT 2 CS 3 GND 4
Typical Applications
Auxiliary Power Supply Standby Power Supply AC- DC Adapter Off- line Battery Charger
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 3 of this data sheet.
© Semiconductor ponents Industries, LLC, 2005
September, 2005
- Rev. 2
Publication Order Number: NCP1215A/D
Line + + + FB CT CS N NC NC
- +
VCC GND Gate
- - If your application requires a gate- source resistor, please refer to design guidelines in this document.
Figure 1. Typical Application
Feedback Loop Control
VDD Iref OFF Time parator Reference Regulator
- Voffset + CT 10 m A 0- 7 V
- +
+
- VCC 12/8.5 V
Undervoltage Lockout
CS 12.5- 50 m A
Set Q
Gate Driver Gate
Current Sense parator GND...
