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參數資料
| 型號： | PJ3842BCS |
| 元件分類： | 穩壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | PLASTIC, SOP-8 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 887K |
| 代理商： | PJ3842BCS |
PJ3842B / PJ3843B
High Performance Current Mode Controller
1-15
2002.ver.A
he PJ3842B and PJ3843B series are high performance
fixed frequency current mode controllers. This is
specifically designed for Off-Line and DC-to-DC converter
applications offering the designer a cost effective solution
with minimal external components.This integrated circuits
feature a trimmed oscillator for precise duty cycle control, a
temperature compensated reference, high gain error amplifier,
current sensing comparator,and a high current totem pole
output ideally suited for driving a power MOSFET.
Also included are protective features consisting of input
and reference undervoltage lockouts each with hysteresis,
cycle-by-cycle current limiting , programmable output
deadtime, and a latch for single pulse metering.
This device is available in 8-pin dual-in-line plastic
packages as well as the 8-pin plastic surface mount (SOP-8).
The SOP-8 package has separate power and ground pins for
the totem pole output stage.
The PJ3842B has UVLO thresholds of 16V (on) and
10V (off), ideally suited for off-line converters. The PJ3843B
is tailored for lowervoltage applications having UVLO
thresholds of 8.5V (on) and 7.6V (off).
Trimmed Oscillator Discharge Current for Precise Duty
Cycle Control
Current Mode Operation to 500KHz
Automatic Feed Forward Compensation
Latching PWM for Cycle-By-Cycle Current Limiting
Internally Trimmed Reference with Undervoltage
Lockout
High Current Totem Pole Output
Undervoltage Lockout with Hystersis
Low Start-Up and Operating Current
Device
Operating Temperature
(Ambient)
Package
PJ3842/3843BCD
DIP-8
PJ3842/3843BCS
-20℃ TO +85℃
SOP-8
The document contains information on a new product.Specifications and information herein are subject to change without notice.
T
DIP-8
SOP-8
SIMPLIFIED BLOCK DIAGRAM
FEATURES
Pin: 1. Compensation
5. Gnd
2. Voltage Feedback
6. Output
3. Current Sense
7. Vcc
4. RT/CT
8. Vref
ORDERING INFORMATION
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| PJ3844BCD | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDIP8 |
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| PJ431BCY | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.495 V, PSSO3 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| PJ3843 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High Performance Current Mode Controller |
| PJ3843B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High Performance Current Mode Controller |
| PJ3843BCD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High Performance Current Mode Controller |
| PJ3843BCS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High Performance Current Mode Controller |
| PJ3844 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High Performance Current Mode Controller |
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