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參數(shù)資料
| 型號(hào)： | TS3406CX5RF |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.5 A SWITCHING REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | ROHS COMPLIANT, SOT-25, 5 PIN |
| 文件頁數(shù)： | 3/7頁 |
| 文件大?。?/td> | 279K |
| 代理商： | TS3406CX5RF |
TS3406
600mA / 1.5MHz Synchronous Buck Converter
3/7
Version: B07
Block Diagram
Function Description
Operation
TS3406 is a monolithic switching mode Step-Down DC-DC converter. It utilizes internal MOSFETs to achieve high
efficiency and can generate very low output voltage by using internal reference at 0.6V. It operates at a fixed switching
frequency, and uses the slope compensated current mode architecture. This Step-Down DC-DC Converter supplies
600mA output current at VCC = 3V with input voltage range from 2.5V to 5.5V.
Current Mode PWM Control
Slope compensated current mode PWM control provides stable switching and cycle-by-cycle current limit for excellent
load and line responses and protection of the internal main switch (P-CH MOSFET) and synchronous rectifier (N-CH
MOSFET). During normal operation, the internal P-CH MOSFET is turned on for a certain time to ramp the inductor
current at each rising edge of the internal oscillator, and switched off when the peak inductor current is above the error
voltage. The current comparator, ICOMP, limits the peak inductor current. When the main switch is off, the
synchronous rectifier will be turned on immediately and stay on until either the inductor current starts to reverse, as
indicated by the current reversal comparator, IZERO, or the beginning of the next clock cycle. The OVDET comparator
controls output transient overshoots by turning the main switch off and keeping it off until the fault is no longer present.
Idle Mode Operation
At very light loads, the TS3406 automatically enters Idle Mode. In the Idle Mode, the inductor current may reach zero or
reverse on each pulse. The PWM control loop will automatically skip pulses to maintain output regulation. The bottom
MOSFET is turned off by the current reversal comparator, IZERO and the switch voltage will ring. This is discontinuous
mode operation, and is normal behavior for the switching regulator. When the input voltage decreases toward the value
of the output voltage, the TS3406 allows the main switch to remain on for more than one switching cycle and increases
the duty cycle until it reaches 100%. The output voltage then is the input voltage minus the voltage drop across the
main switch and the inductor. At low input supply voltage, the RDS(ON) of the P-CH MOSFET increases, and the
efficiency of the converter decreases. Caution must be exercised to ensure the heat dissipated not to exceed the
maximum junction temperature of the IC.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS3406CXRF | 制造商:TSC 制造商全稱:Taiwan Semiconductor Company, Ltd 功能描述:600mA / 1.5MHz Synchronous Buck Converter |
| TS3407IPT | 制造商:ST 功能描述:Micropower quad CMOS voltage comparator |
| TS3408 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| TS3410 | 制造商:TSC 制造商全稱:Taiwan Semiconductor Company, Ltd 功能描述:1A / 1.5MHz Synchronous Buck Converter |
| TS3410_10 | 制造商:TSC 制造商全稱:Taiwan Semiconductor Company, Ltd 功能描述:1A / 1.4MHz Synchronous Buck Converter |
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