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TL2843P 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
PWM控制器
封装:
PDIP-8
描述:
TL28/TL38 系列，Texas Instruments隔离式回扫电源控制器提供恒定电压 (CV) 和恒定电流 (CC) 输出调节，用于提高对较大负载阶跃的瞬时响应。 初级侧调节 (PSR) 无需光耦合器。### 回扫控制器，Texas Instruments电流模式和电压模式 PWM 控制器 初级侧调节 峰值功率模式 低功率
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引脚图在P3Hot
典型应用电路图在P10P11P12
原理图在P8P11
封装尺寸在P16P17P18P19P21P22
标记信息在P16P17P18P19
封装信息在P15P16P17P18P19P20P21P22
技术参数、封装参数在P4
应用领域在P1P28
电气规格在P5P6
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TL2843P数据手册
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TL2842
,
TL2843
,
TL2844
,
TL2845
TL3842
,
TL3843
,
TL3844
,
TL3845
SLVS038H –JANUARY 1989–REVISED JANUARY 2015
TLx84x Current-Mode PWM Controllers
1 Features 3 Description
The TL284x and TL384x series of control integrated
1
• Optimized for Off-Line and DC-to-DC Converters
circuits provide the features that are necessary to
• Low Start-Up Current (< 1 mA)
implement off-line or DC-to-DC fixed-frequency
• Automatic Feed-forward compensation
current-mode control schemes, with a minimum
number of external components. Some of the
• Pulse-by-Pulse Current Limiting
internally implemented circuits are an undervoltage
• Enhanced Load-Response Characteristics
lockout (UVLO), featuring a start-up current of less
• Undervoltage Lockout With Hysteresis
than 1 mA, and a precision reference trimmed for
accuracy at the error amplifier input. Other internal
• Double-Pulse Suppression
circuits include logic to ensure latched operation, a
• High-Current Totem-Pole Output
pulse-width modulation (PWM) comparator (that also
• Internally Trimmed Bandgap Reference
provides current-limit control), and a totem-pole
• 500-kHz Operation
output stage designed to source or sink high-peak
current. The output stage, suitable for driving N-
• Error Amplifier With Low Output Resistance
channel MOSFETs, is low when it is in the off state.
• Designed to be Interchangeable with UC2842 and
UC3842 Series
Device Information
(1)
PART NUMBER PACKAGE (PIN) BODY SIZE (NOM)
2 Applications
SOIC (8) 4.90 mm × 3.91 mm
• Switching regulators of any polarity
TLx84x SOIC (14) 8.65 mm × 3.91 mm
• Transformer-coupled DC/DC convertors
PDIP (8) 9.81 mm × 6.35 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Device Pinout Drawing
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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