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参数资料
型号： LT1374IS8-SYNC#TRPBF
厂商： LINEAR TECHNOLOGY CORP
元件分类： 稳压器
英文描述： 8.5 A SWITCHING REGULATOR, 560 kHz SWITCHING FREQ-MAX, PDSO8
封装： 0.150 INCH, PLASTIC, SO-8
文件页数： 23/32页
文件大小： 698K
代理商： LT1374IS8-SYNC#TRPBF
3
LT1374
1374fd
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Feedback Voltage (Adjustable)
2.39
2.42
2.45
V
All Conditions
●
2.36
2.48
V
Sense Voltage (Fixed 5V)
4.94
5.0
5.06
V
All Conditions
●
4.90
5.10
V
SENSE Pin Resistance
710
14
k
Reference Voltage Line Regulation
5V ≤ VIN ≤ 25V (5V ≤ VIN ≤ 32V for LT1374HV)
0.01
0.03
%/V
Feedback Input Bias Current
●
0.5
2
A
Error Amplifier Voltage Gain
(Notes 2, 8)
200
400
Error Amplifier Transconductance
I (VC) = ±10A (Note 8)
1500
2000
2700
Mho
●
1000
3100
Mho
VC Pin to Switch Current Transconductance
5.3
A/ V
Error Amplifier Source Current
VFB = 2.1V or VSENSE = 4.4V
●
140
225
320
A
Error Amplifier Sink Current
VFB = 2.7V or VSENSE = 5.6V
●
140
225
320
A
VC Pin Switching Threshold
Duty Cycle = 0
0.9
V
VC Pin High Clamp
2.1
V
Switch Current Limit
VC Open, VFB = 2.1V or VSENSE = 4.4V, DC ≤ 50%
●
4.5
6
8.5
A
Slope Compensation (Note 9)
DC = 80%
0.8
A
Switch On Resistance (Note 7)
ISW = 4.5A
0.07
0.1
●
0.13
Maximum Switch Duty Cycle
VFB = 2.1V or VSENSE = 4.4V
90
93
%
●
86
93
%
Switch Frequency
VC Set to Give 50% Duty Cycle
460
500
540
kHz
●
440
560
kHz
Switch Frequency Line Regulation
5V ≤ VIN ≤ 25V, (5V ≤ VIN ≤ 32V for LT1374HV)
●
0
0.15
%/ V
Frequency Shifting Threshold on FB Pin
f = 10kHz
●
0.8
1.0
1.3
V
Minimum Input Voltage (Note 3)
●
5.0
5.5
V
Minimum Boost Voltage (Note 4)
ISW ≤ 4.5A
●
2.3
3.0
V
Boost Current (Note 5)
ISW = 1A
●
20
35
mA
ISW = 4.5A
●
90
140
mA
VIN Supply Current (Note 6)
VBIAS = 5V
●
0.9
1.4
mA
BIAS Supply Current (Note 6)
VBIAS = 5V
●
3.2
4.0
mA
Shutdown Supply Current
VSHDN = 0V, VIN ≤ 25V, VSW = 0V, VC Open
20
50
A
●
75
A
VSHDN = 0V, VIN ≤ 32V, VSW = 0V, VC Open
30
75
A
●
100
A
Lockout Threshold
VC Open
●
2.3
2.38
2.46
V
Shutdown Thresholds
VC Open Device Shutting Down
●
0.13
0.37
0.60
V
Device Starting Up
●
0.25
0.45
0.7
V
Synchronization Threshold
●
1.5
2.2
V
Synchronizing Range
580
1000
kHz
SYNC Pin Input Resistance
40
k
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Gain is measured with a VC swing equal to 200mV above the
switching threshold level to 200mV below the upper clamp level.
Note 3: Minimum input voltage is not measured directly, but is guaranteed
by other tests. It is defined as the voltage where internal bias lines are still
regulated so that the reference voltage and oscillator frequency remain
constant. Actual minimum input voltage to maintain a regulated output will
depend on output voltage and load current. See Applications Information.
Note 4: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the internal power switch.
The
● denotes specifications which apply over the full operating tempera-
ture range, otherwise specifications are at TJ = 25°C. VIN = 15V, VC = 1.5V, Boost = VIN + 5V, switch open, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
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相关代理商/技术参数
参数描述
LT1374IT7 功能描述:IC REG BUCK ADJ 4.5A TO220-7 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT
LT1374IT7#PBF 功能描述:IC REG BUCK ADJ 4.5A TO220-7 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT
LT1374IT7-5 功能描述:IC REG BUCK 5V 4.5A TO220-7 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT
LT1374IT7-5#PBF 功能描述:IC REG BUCK 5V 4.5A TO220-7 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT
LT1375 制造商:LINER 制造商全称:Linear Technology 功能描述:1.5A, 500kHz Step-Down Switching Regulators
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