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IR21571S PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 IR21571S
部品説明 FULLY INTEGRATED BALLAST CONTROL IC
メーカ International Rectifier
ロゴ International Rectifier ロゴ 



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IR21571S Datasheet, IR21571S PDF,ピン配置, 機能
Data Sheet PD No. 60179 revM
Not recommended for new design:
please use IRS21571D
IR21571(S) & (PbF)
FULLY INTEGRATED BALLAST CONTROL IC
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
Description
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
Parts also available LEAD-FREE
Packages
The IR21571 is a fully integrated, fully protected 600V ballast control IC designed
to drive virtually all types of rapid start fluorescent lamp ballasts. Externally pro-
grammable features such as preheat time & frequency, ignition ramp characteris-
tics, and running mode operating frequency provide a high degree of flexibility for
the ballast design engineer. Comprehensive protection features such as protec-
tion 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 is a variable
frequency oscillator with externally programmable deadtime. Precise control of a
50% duty cycle is accomplished using a T-flip-flop. The IR21571 is available in both
16 pin DIP and 16 pin narrow body SOIC packages.
16 Lead SOIC
(narrow body)
16 Lead PDIP
Typical Connection
+ Rectified AC Line
+ VBUS
R2
R1
C1
CPH
CRAMP RPH
RT RRUN
CSTART RSTART
CT
ROC
RDT
VDC
1
CPH
2
RPH
3
RT
4
RUN
5
CT
6
DT
7
OC
8
HO
16
VS
15
VB
14
VCC
13
COM
12
LO
11
CS
10
SD
9
RSupply
RGHS
CBS
DBOOT
CVCC
R3 RGLS
R4
C2 RCS
CBLOCK LRES
CSNUBBER
D1
D2
R5
CRES
VBUS return
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1
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