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參數(shù)資料
| 型號： | CS2843ALN8 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 273K |
| 代理商： | CS2843ALN8 |
Semiconductor Components Industries, LLC, 2006
July, 2006 Rev. 4
1
Publication Order Number:
CS2842A/D
CS2842A, CS3842A,
CS2843A, CS3843A
OffLine Current Mode
PWM Control Circuit with
Undervoltage Lockout
The CS284XA, CS384XA provides all the necessary features to
implement offline fixed frequency currentmode control with a
minimum number of external components.
The CS384XA family incorporates a new precision
temperaturecontrolled oscillator with an internally trimmed
discharge current to minimize variations in frequency. A precision
dutycycle clamp eliminates the need for an external oscillator when a
50% dutycycle is used. Dutycycles greater than 50% are also
possible. On board logic ensures that VREF is stabilized before the
output stage is enabled. Ion implant resistors provide tighter control of
undervoltage lockout.
Other features include low startup current, pulsebypulse current
limiting, and a highcurrent totem pole output for driving capacitive
loads, such as the gate of power MOSFET. The output is LOW in the
off state, consistent with Nchannel devices.
The CS384XA series of currentmode control ICs are available in
8 and14 lead packages for surface mount (SO) applications as well as
8 lead PDIP packages.
Features
Optimized for Offline Control
Internally Trimmed Temperature Compensated Oscillator
Maximum DutyCycle Clamp
VREF Stabilized Before Output Stage is Enabled
Low Startup Current
PulseByPulse Current Limiting
Improved Undervoltage Lockout
Double Pulse Suppression
1.0% Trimmed Bandgap Reference
High Current Totem Pole Output
http://onsemi.com
x
= 2 or 3
y
= 2 or 3
A
= Assembly Location
WL, L
= Wafer Lot
YY, Y
= Year
WW, W = Work Week
DIP8
N SUFFIX
CASE 626
1
8
SO8
D SUFFIX
CASE 751
1
8
SO14
D SUFFIX
CASE 751A
1
14
1
8
x84yA
AWL
YYWW
MARKING
DIAGRAM
1
x84yA
ALYWX
8
1
CSx84yA
AWLYWW
14
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
ORDERING INFORMATION
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