參數(shù)資料
型號(hào)： LM3370TLX-3806
廠商： National Semiconductor Corporation
元件分類： DC/DC變換器
英文描述： Dual Synchronous Step-Down DC-DC Converter with Dynamic Voltage Scaling Function
中文描述： 雙同步降壓型DC - DC轉(zhuǎn)換器的動(dòng)態(tài)電壓調(diào)節(jié)功能
文件頁(yè)數(shù)： 15/26頁(yè)
文件大?。?/td> 5302K
代理商： LM3370TLX-3806
FORCED PWM MODE
The LM3370 auto mode can be bypassed by forcing the de-
vice to operate in PWM mode, this can be implemented
through the I
2
C compatible interface, see
Table 1
.
SOFT-START
The LM3370 has a soft start circuit that limits in-rush current
during start up. Soft start is activated only if EN goes from
logic low to logic high after V
IN
reaches 2.7V.
LDO - LOW DROP OUT OPERATION
The LM3370 can operate at 100% duty cycle (no switching,
PFET switch completely on) for low drop out support of the
output voltage. In this way the output voltage will be controlled
down to the lowest possible input voltage. The minimum input
voltage needed to support the output voltage is V
IN,MIN
=
I
LOAD
*(R
DSON,PFET
+ R
INDUCTOR
) + V
OUT
I
LOAD
load current
R
DSON/PFET
drain to source resistance of PFET switch in the
triode region
R
INDUCTOR
inductor resistance
20167303
FIGURE 5. Operation in PFM Mode and Transfer to PWM Mode
15
www.national.com
L
相關(guān)PDF資料
PDF描述
LM3370SD-3013 Dual Synchronous Step-Down DC-DC Converter with Dynamic Voltage Scaling Function
LM3370SD-3021 Switching Regulator Control (Voltage Mode type AC/DC); Vin (V) max.: 10 to 35; Icc (mA) max.: 12; Fmax (kHz) max.: 500; Topr [Tjopr] (°C): -20 to +85; Remarks: Primary control MOSFET drive; Package: SOP; Pin count: 10
LM3370SD-3416 Switching Regulator Control (Voltage Mode type AC/DC); Vin (V) max.: 10 to 35; Icc (mA) max.: 12; Fmax (kHz) max.: 500; Topr [Tjopr] (°C): -20 to +85; Remarks: Primary control MOSFET drive; Package: DIP; Pin count: 14
LM3370SD-3621 Dual Synchronous Step-Down DC-DC Converter with Dynamic Voltage Scaling Function
LM3370SD-3806 Dual Synchronous Step-Down DC-DC Converter with Dynamic Voltage Scaling Function
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM3370TLX-3806/NOPB 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
LM337AHVK 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Regulator
LM337AHVLCC4 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Regulator
LM337AHVLCC4-8QR-B 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Regulator
LM337AK 制造商:SEME-LAB 制造商全稱:Seme LAB 功能描述:NEGATIVE ADJUSTABLE VOLTAGE REGULATOR
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