1.0 A Low-Dropout Positive Fixed and Adjustable Voltage Regulators

The NCP1117 series are low dropout positive voltage regulators that are capable of providing an output current that is in excess of 1.0 A with a maximum dropout voltage of 1.2 V at 800 mA over temperature. This series contains nine fixed output voltages of 1.5 V, 1.8 V, 1.9 V, 2.0 V, 2.5 V, 2.85 V, 3.3 V, 5.0 V, and 12 V that have no minimum load requirement to maintain regulation. Also included is an adjustable output version that can be programmed from 1.25 V to 18.8 V with two external resistors. On chip trimming adjusts the reference/output voltage to within ±1.0% accuracy. Internal protection features consist of output current limiting, safe operating area compensation, and thermal shutdown. The NCP1117 series can operate with up to 20 V input. Devices are available in SOT−223 and DPAK packages.

Features• Output Current in Excess of 1.0 A
• 1.2 V Maximum Dropout Voltage at 800 mA Over Temperature
• Fixed Output Voltages of 1.5 V, 1.8 V, 1.9 V, 2.0 V, 2.5 V, 2.85 V, 3.3 V, 5.0 V, and 12 V
• Adjustable Output Voltage Option
• No Minimum Load Requirement for Fixed Voltage Output Devices
• Reference/Output Voltage Trimmed to ±1.0%
• Current Limit, Safe Operating and Thermal Shutdown Protection
• Operation to 20 V Input
• NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
• These are Pb-Free Devices

Applications• Consumer and Industrial Equipment Point of Regulation
• Active SCSI Termination for 2.85 V Version
• Switching Power Supply Post Regulation
• Hard Drive Controllers
• Battery Chargers

Manufacturer	onsemi
Product Category	AC DC Converters, Offline Switchers
Series	-
Product	Current Mode Controllers
Packaging	Tube
Unit-Weight	0.030018 oz
Mounting-Style	Through Hole
Package-Case	8-DIP (0.300", 7.62mm), 7 Leads
Operating-Temperature	-40°C ~ 150°C (TJ)
Mounting-Type	Through Hole
Supplier-Device-Package	7-PDIP
Watt	43W
Number-of-Outputs	1 Output
Output-Isolation	Isolated
Internal-Switch-s	Yes
Voltage-Breakdown	650V
Topology	Flyback
Voltage-Start-Up	17V
Voltage-Supply-Vcc-Vdd	8.8 V ~ 35 V
Duty-Cycle	80%
Frequency-Switching	100kHz
Fault-Protection	Over Load, Over Temperature, Over Voltage, Short Circuit
Control-Features	-
Shutdown	Yes
Isolation	Non-Isolated
Maximum Operating Temperature	+ 150 C
Operating temperature range	- 40 C
Description-Function	High voltage switching regulator for offline power supplies
Operating-Supply-Current	3.3 mA
Switching-Frequency	108 kHz
Fall-Time	5.94 ns
Rise-Time	7.54 ns
Package-Case	PDIP-7
Duty-Cycle-Max	82 %