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参数资料
| 型号： | LTC3838IFE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/54页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 38TSSOP |
| 标准包装： | 2,500 |
| 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： | 带卷 (TR) |
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LTC3838
ORDER INFORMATION
LEAD FREE FINISH
LTC3838EUHF#PBF
LTC3838IUHF#PBF
LTC3838EFE#PBF
LTC3838IFE#PBF
TAPE AND REEL
LTC3838EUHF#TRPBF
LTC3838IUHF#TRPBF
LTC3838EFE#TRPBF
LTC3838IFE#TRPBF
PART MARKING*
3838
3838
LTC3838FE
LTC3838FE
PACKAGE DESCRIPTION
38-Lead (5mm × 7mm) Plastic QFN
38-Lead (5mm × 7mm) Plastic QFN
38-Lead Plastic TSSOP
38-Lead Plastic TSSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T A = 25°C. V IN = 15V unless otherwise noted (Note 3).
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Main Control Loops
V IN
V OUT1,2(REG)
Input Voltage Operating Range
Regulated Output Voltage Operating Range V OUT1 Regulated Differentially with Respect to
V OUTSENSE1– , V OUT2 Regulated with Respect to
4.5
0.6
38
5.5
V
V
SGND
I Q
Input DC Supply Current
Both Channels Enabled
Only One Channel Enabled
Shutdown Supply Current
MODE/PLLIN = 0V, No Load
RUN1 or RUN2 (But Not Both) = 0V
RUN1 = RUN2 = 0V
3
2
15
mA
mA
μA
V OUTSENSE1(REG) Regulated Differential Feedback Voltage on ITH1 = 1.2V (Note 5)
Channel 1 (V OUTSENSE1+ – V OUTSENSE1– ) T A = 25°C
T A = 0°C to 85°C
T A = –40°C to 125°C
Regulated Differential Feedback Voltage on V IN = 4.5V to 38V, ITH1 = 0.5V to 1.9V (Note 5),
Channel 1 Over Line, Load and Common –0.5V < V OUTSENSE1– < 0.5V
Mode T A = 0°C to 85°C
T A = –40°C to 125°C
l
l
l
l
0.5985
0.596
0.594
0.594
0.591
0.6
0.6
0.6
0.6
0.6
0.6015
0.604
0.606
0.606
0.609
V
V
V
V
V
V FB2(REG)
Regulated Feedback Voltage on Channel 2
ITH2 = 1.2V (Note 5)
T A = 25°C
T A = 0°C to 85°C
T A = –40°C to 125°C
l
l
0.597
0.594
0.592
0.6
0.6
0.6
0.603
0.606
0.608
V
V
V
I VOUTSENSE1+
I VOUTSENSE1–
I VFB2
g m(EA)1,2
t ON(MIN)1,2
t OFF(MIN)1,2
Regulated Feedback Voltage on Channel 2
Over Line, Load
V OUTSENSE1+ Input Bias Current
V OUTSENSE1– Input Bias Current
V FB2 Input Bias Current
Error Amplifier Transconductance
Minimum Top Gate On-Time
Minimum Top Gate Off-Time
V IN = 4.5V to 38V, ITH2 = 0.5V to 1.9V (Note 5)
T A = 0°C to 85°C
T A = –40°C to 125°C
V OUTSENSE1+ – V OUTSENSE1– = 0.6V
V OUTSENSE1+ – V OUTSENSE1– = 0.6V
V FB2 = 0.6V
ITH = 1.2V (Note 5)
V IN = 38V, V OUT = 0.6V, R T = 20k (Note 6)
(Note 6)
l
l
0.592
0.588
0.6
0.6
±5
–25
–5
1.7
30
90
0.608
0.612
±25
–50
±50
V
V
nA
μA
nA
mS
ns
ns
3838fa
3
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相关代理商/技术参数 |
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| 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 |
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