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参数资料
| 型号： | LTC3838IFE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/54页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 38TSSOP |
| 标准包装： | 50 |
| 系列： | PolyPhase® |
| PWM 型： | 电流模式 |
| 输出数： | 2 |
| 频率 - 最大： | 2MHz |
| 电源电压： | 4.5 V ~ 38 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 38-TFSOP （0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 管件 |
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LTC3838
TYPICAL PERFORMANCE CHARACTERISTICS
I LOAD
10A/DIV
V OUT
50mV/DIV
AC-COUPLED
I L
10A/DIV
Transient Response
(Forced Continuous Mode)
I LOAD
10A/DIV
V OUT
50mV/DIV
AC-COUPLED
I L
10A/DIV
Load Step
(Forced Continuous Mode)
I LOAD
10A/DIV
V OUT
50mV/DIV
AC-COUPLED
I L
10A/DIV
Load Release
(Forced Continuous Mode)
50μs/DIV
3838 G01
5μs/DIV
3838 G02
5μs/DIV
3838 G03
I LOAD
10A/DIV
LOAD TRANSIENT = 0A TO 15A TO 0A
V IN = 12V
V OUT = 1.2V
FIGURE 17 CIRCUIT, CHANNEL 1, V RNG1 = SGND
Transient Response
(Discontinuous Mode)
I LOAD
10A/DIV
LOAD STEP = 0A TO 15A
V IN = 12V
V OUT = 1.2V
FIGURE 17 CIRCUIT, CHANNEL 1, V RNG1 = SGND
Load Step
(Discontinuous Mode)
I LOAD
10A/DIV
LOAD RELEASE = 15A TO 0A
V IN = 12V
V OUT = 1.2V
FIGURE 17 CIRCUIT, CHANNEL 1, V RNG1 = SGND
Load Release
(Discontinuous Mode)
V OUT
50mV/DIV
AC-COUPLED
I L
10A/DIV
V OUT
50mV/DIV
AC-COUPLED
I L
10A/DIV
V OUT
50mV/DIV
AC-COUPLED
I L
10A/DIV
50μs/DIV
3838 G04
5μs/DIV
3838 G05
5μs/DIV
3838 G06
LOAD TRANSIENT = 500mA TO 15A TO 500mA
V IN = 12V
V OUT = 1.2V
FIGURE 17 CIRCUIT, CHANNEL 1, V RNG1 = SGND
LOAD STEP = 500mA TO 15A
V IN = 12V
V OUT = 1.2V
FIGURE 17 CIRCUIT, CHANNEL 1, V RNG1 = SGND
LOAD RELEASE = 15A TO 500mA
V IN = 12V
V OUT = 1.2V
FIGURE 17 CIRCUIT, CHANNEL 1, V RNG1 = SGND
SW
3V/DIV
V OUT
50mV/DIV
AC-COUPLED
ITH
1V/DIV
I L
10A/DIV
Load Release with Detect Transient (DTR)
Feature Enabled
SW
3V/DIV
V OUT
50mV/DIV
AC-COUPLED
ITH
1V/DIV
I L
10A/DIV
Load Release with Detect Transient (DTR)
Feature Disabled
5μs/DIV
3838 G07
5μs/DIV
3838 G08
LOAD RELEASE = 15A TO 5A
V IN = 5V
V OUT = 0.6V
FIGURE 17 CIRCUIT, CHANNEL 1 MODIFIED:
R FB2 = 0Ω, V RNG2 = SGND, C ITH1 = 120pF, C ITH2 = 0pF,
FROM DTR1 PIN: R ITH1 = 46.4k TO SGND, R ITH2 = 42.2k TO INTV CC
LOAD RELEASE = 15A TO 5A
V IN = 5V
V OUT = 0.6V
FIGURE 17 CIRCUIT, CHANNEL 1 MODIFIED:
R FB2 = 0Ω, V RNG2 = SGND, C ITH1 = 120pF, C ITH2 = 0pF,
R ITH1/2 = 46.4k TO SGND//42.2k TO INTV CC ,
CONNECTION FROM R ITH1/2 AND C ITH1 TO DTR1 PIN REMOVED.
DTR1 PIN TIED TO INTV CC
3838fa
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3838IUHF#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 38-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC3838IUHF#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 38-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC3838IUHF-1#PBF | 制造商:Linear Technology 功能描述:IC REG CTRLR BUCK PWM CM 38QFN 制造商:Linear Technology 功能描述:BUCK DUAL CNTRL 4.5-38V 2MHZ 38QFN 制造商:Linear Technology 功能描述:BUCK, DUAL, CNTRL, 4.5-38V, 2MHZ, 38QFN 制造商:Linear Technology 功能描述:DP-SWREG/Controller, Dual, Fast, Accurate Step-Down Controller with Differential 制造商:Linear Technology 功能描述:DC-DC CONTROLLER, DUAL, BUCK, ADJ, QFN-38, Primary Input Voltage:38V, No. of Outputs:2, Output Current:25A, No. of Pins:38, Operating Temperature Min:-40C, Operating Temperature Max:125C, MSL:MSL 1 - Unlimited , RoHS Compliant: Yes |
| LTC3838IUHF-1#TRPBF | 制造商:Linear Technology 功能描述:IC REG CTRLR BUCK PWM CM 38QFN 制造商:Linear Technology 功能描述:DP-SWREG/Controller, Dual, Fast, Accurate Step-Down Controller with Differential 制造商:Linear Technology 功能描述:DC-DC CONTROLLER, DUAL, BUCK, ADJ, QFN-38, Primary Input Voltage:38V, No. of Outputs:2, Output Current:25A, No. of Pins:38, Operating Temperature Min:-40C, Operating Temperature Max:125C, MSL:MSL 1 - Unlimited , RoHS Compliant: Yes |
| LTC3838IUHF-2#PBF | 制造商:Linear Technology 功能描述:IC REG CTRLR BUCK PWM CM 38-QFN 制造商:Linear Technology 功能描述:BUCK DUAL CNTRL 4.5-38V 2MHZ 38QFN 制造商:Linear Technology 功能描述:DC-DC CONTROLLER BUCK 2MHZ QFN-38 制造商:Linear Technology 功能描述:BUCK, DUAL, CNTRL, 4.5-38V, 2MHZ, 38QFN 制造商:Linear Technology 功能描述:DP-SWREG/Controller, Dual, Fast, Accurate Step-Down Controller with Differential |
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