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参数资料
| 型号： | LT1171CT#FLOW-06PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 5.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PZFM5 |
| 封装： | LEAD FREE, PLASTIC, TO-220, 5 PIN |
| 文件页数： | 19/24页 |
| 文件大小： | 225K |
| 代理商： | LT1171CT#FLOW-06PBF |
LT1170/LT1171/LT1172
4
117012fg
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VC = 0.5V, VFB = VREF, output pin open, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VREF
Reference Voltage
Measured at Feedback Pin
VC = 0.8V
l
1.224
1.214
1.244
1.264
1.274
V
IB
Feedback Input Current
VFB = VREF
l
350
750
1100
nA
gm
Error Amplifier Transconductance
ΔIC = ±25μA
l
3000
2400
4400
6000
7000
μmho
Error Amplifier Source or Sink Current
VC = 1.5V
l
150
120
200
350
400
μA
Error Amplifier Clamp Voltage
Hi Clamp, VFB = 1V
Lo Clamp, VFB = 1.5V
1.80
0.25
0.38
2.30
0.52
V
Reference Voltage Line Regulation
3V ≤ VIN ≤ VMAX
VC = 0.8V
l
0.03
%/V
AV
Error Amplifier Voltage Gain
0.9V ≤ VC ≤ 1.4V
500
800
V/V
Minimum Input Voltage (Note 5)
l
2.6
3.0
V
IQ
Supply Current
3V ≤ VIN ≤ VMAX, VC = 0.6V
6
9
mA
Control Pin Threshold
Duty Cycle = 0
l
0.8
0.6
0.9
1.08
1.25
V
Normal/Flyback Threshold on Feedback Pin
0.4
0.45
0.54
V
VFB
Flyback Reference Voltage (Note 5)
IFB = 50μA
l
15.0
14.0
16.3
17.6
18.0
V
Change in Flyback Reference Voltage
0.05 ≤ IFB ≤ 1mA
4.5
6.8
9
V
Flyback Reference Voltage Line Regulation
(Note 5)
IFB = 50μA
7V ≤ VIN ≤ VMAX
0.01
0.03
%/V
Flyback Amplifier Transconductance (gm)ΔIC = ±10μA
150
300
650
μmho
Flyback Amplifier Source and Sink Current
VC = 0.6V
Source
IFB = 50μA
Sink
l
15
25
32
40
70
mA
BV
Output Switch Breakdown Voltage
3V ≤ VIN ≤ VMAX,
LT1170/LT1171/LT1172
ISW = 1.5mA
LT1170HV/LT1171HV/LT1172HV
LT1172S8
l
65
75
60
90
80
V
VSAT
Output Switch “On” Resistance (Note 3)
LT1170
LT1171
LT1172
l
0.15
0.30
0.60
0.24
0.50
1.00
Ω
Control Voltage to Switch Current
Transconductance
LT1170
LT1171
LT1172
8
4
2
A/V
ILIM
Switch Current Limit (LT1170)
Duty Cycle = 50%
TJ ≥ 25°C
Duty Cycle = 50%
TJ < 25°C
Duty Cycle = 80% (Note 4)
l
5
4
10
11
10
A
(LT1171)
Duty Cycle = 50%
TJ ≥ 25°C
Duty Cycle = 50%
TJ < 25°C
Duty Cycle = 80% (Note 4)
l
2.5
2.0
5.0
5.5
5.0
A
(LT1172)
Duty Cycle = 50%
TJ ≥ 25°C
Duty Cycle = 50%
TJ < 25°C
Duty Cycle = 80% (Note 4)
l
1.25
1.00
3.0
3.5
2.5
A
ΔIIN
ΔISW
Supply Current Increase During Switch
On-Time
25
35
mA/A
f
Switching Frequency
l
88
85
100
112
115
kHz
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| LT1171HVCQ | 功能描述:IC REG MULTI CONFIG ADJ D2PAK 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 |
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