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參數(shù)資料
| 型號： | 5962-8951101EA |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.5 A SWITCHING CONTROLLER, 350 kHz SWITCHING FREQ-MAX, CDIP16 |
| 封裝： | CERAMIC, DIP-16 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大小： | 780K |
| 代理商： | 5962-8951101EA |
UC1525A/27A
UC2525A/27A
UC3525A/27A
Regulating Pulse Width Modulators
FEATURES
8 to 35V Operation
5.1V Reference Trimmed to
±1%
100Hz to 500kHz Oscillator
Range
Separate Oscillator Sync
Terminal
Adjustable Deadtime Control
Internal Soft-Start
Pulse-by-Pulse Shutdown
Input Undervoltage Lockout
with Hysteresis
Latching PWM to Prevent
Multiple Pulses
Dual Source/Sink Output
Drivers
DESCRIPTION
The UC1525A/1527A series of pulse width modulator integrated circuits are de-
signed to offer improved performance and lowered external parts count when used
in designing all types of switching power supplies. The on-chip +5.1V reference is
trimmed to
±1% and the input common-mode range of the error amplifier includes
the reference voltage, eliminating external resistors. A sync input to the oscillator
allows multiple units to be slaved or a single unit to be synchronized to an external
system clock. A single resistor between the CT and the discharge terminals pro-
vides a wide range of dead-time adjustment. These devices also feature built-in
soft-start circuitry with only an external timing capacitor required. A shutdown termi-
nal controls both the soft-start circuitry and the output stages, providing instantane-
ous turn off through the PWM latch with pulsed shutdown, as well as soft-start
recycle with longer shutdown commands. These functions are also controlled by
an undervoltage lockout which keeps the outputs off and the soft-start capacitor
discharged for sub-normal input voltages. This lockout circuitry includes approxi-
mately 500mV of hysteresis for jitter-free operation. Another feature of these PWM
circuits is a latch following the comparator. Once a PWM pulse has been termi-
nated for any reason, the outputs will remain off for the duration of the period. The
latch is reset with each clock pulse. The output stages are totem-pole designs ca-
pable of sourcing or sinking in excess of 200mA. The UC1525A output stage fea-
tures NOR logic, giving a LOW output for an OFF state. The UC1527A utilizes OR
logic which results in a HIGH output level when OFF.
BLOCK DIAGRAM
2/96
相關PDF資料 |
PDF描述 |
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| 5962-8951103EA | 0.5 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CDIP16 |
| 5962-8951105EA | 0.5 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CDIP16 |
| 5962-8951105V2A | 0.5 A SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, CQCC20 |
| 5962-8951105VEA | 0.5 A SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, CDIP16 |
| 5962-8951106V2A | 0.5 A SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, CQCC20 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 5962-89511032A | 制造商:Texas Instruments 功能描述:Voltage Mode PWM Controller 400mA 20-Pin LCCC Tube 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 5962-8951103EA | 制造商:Texas Instruments 功能描述:Voltage Mode PWM Controller 400mA 16-Pin CDIP Tube 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述:VOLT MODE PWM CNTRLR 400MA 16CDIP - Rail/Tube |
| 5962-8951104EA | 制造商:Texas Instruments 功能描述:Voltage Mode PWM Controller 400mA 16-Pin CDIP Tube 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述:VOLT MODE PWM CNTRLR 400MA 16CDIP - Rail/Tube |
| 5962-8951105EA | 制造商:Texas Instruments 功能描述:Voltage Mode PWM Controller 400mA 16-Pin CDIP Tube |
| 5962-8951105V2A | 功能描述:電壓模式 PWM 控制器 Regulating PWM RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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