IR21571S

Series: -
Packaging: Tube
Type: Ballast Controller
Current - Output: 500mA
Current - Supply: 5.5mA
Manufacturer: International Rectifier
Operating Temperature: -40°C ~ 125°C
Package / Case: 16-SOIC (0.154", 3.90mm Width)
Supplier Device Package: 16-SOIC N
Frequency: 45.5 ~ 50.5 kHz
Voltage - Supply: 11.4 V ~ 15.6 V


Features:

• Programmable preheat time & frequency
• Programmable ignition ramp
• Protection from failure-to-strike
• Lamp filament sensing & protection
• Protection from operation below resonance - 0.2V CS threshold sync'd to falling edge on LO
• Protection from low-line condition
• Automatic restart for lamp exchange
• Thermal overload protection
• Programmable deadtime
• Integrated 600V level-shifting gate driver
• Internal 15.6V zener clamp diode on VCC
• Micropower startup (150uA)
• Latch immunity protection on all leads
• ESD protection on all leads


Pinout




Specifications

Symbol	Definition		Min.	Max.	Units
VB	High side floating supply voltage		-0.3	625	V
VS	High side floating supply offset voltage		VB - 25	VB + 0.3
VHO	High side floating output voltage		VS - 0.3	VB + 0.3
VLO	Low side output voltage		-0.3	VCC + 0.3
IOMAX	Maximum allowable output current (either output) due to external power transistor miller effect		-500	500	mA
IRT	RT pin current		-5	5
VCT	CT pin voltage		-0.3	5.5	V
VDC	VDC pin voltage		-0.3	VCC + 0.3
ICPH	CPH pin current		-5	5	mA
IRPH	RPH pin current		-5	5
VRUN	RUN pin current		-5	5
IDT	Deadtime pin current		-5	8
VCS	Current sense pin voltage		-0.3	5.5	V
ICS	Current sense pin current		-5	5	mA
IOC	Over-current threshold pin current		-5	5
ISD	Shutdown pin current		-5	5
ICC	Supply current (note 1)		-20	20
dV/dt	Allowable offset voltage slew rate		-50	50	V/ns
PD	Package power dissipation @ TA +25 PD = (TJMAX-TA)/RthJA	(14 pin PDIP)	-	1.60	W
		(14 pin SOIC)	-	1.00
RthJA	Thermal resistance, junction to ambient	(14 pin PDIP)	-	75	/W
		(14 pin SOIC)	-	115
TJ	Junction temperature		-55	150
TS	Storage temperature		-55	150
TL	Lead temperature (soldering, 10 seconds)		-	300

Description

The IR21571S is a fully integrated, fully protected 600V ballast control IC designed to drive virtually all types of rapid start fluorescent lamp ballasts. Externally programmable features such as preheat time & frequency, ignition ramp characteristics, and running mode operating frequency provide a high degree of flexibility for the ballast design engineer. Comprehensive protection features of the IR21571S such as protection from failure of a lamp to strike, filament failures, low dc bus conditions, thermal overload, or lamp failure during normal operation, as well as an automatic restart function, have been included in the design. The heart of this control IC of the IR21571S is a variable frequency oscillator with externally programmable deadtime. Precise control of a 50% duty cycle is accomplished using a T-flip-flop. The IR21571S is available in both 16 pin DIP and 16 pin narrow body SOIC packages.

Parameters:

Technical/Catalog Information	IR21571S
Vendor	International Rectifier
Category	Integrated Circuits (ICs)
Package / Case	16-SOIC (3.9mm Width)
Packaging	Tube
Voltage - Supply	11.4 V ~ 15.6 V
Type	Ballast Controller
Current - Supply	5.5mA
Current - Output	500mA
Frequency	45.5 ~ 50.5 kHz
Operating Temperature	-40°C ~ 125°C
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	IR21571S IR21571S