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参数资料
| 型号： | LT1070HVIT#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | IC REG MULTI CONFIG ADJ TO220-5 |
| 标准包装： | 50 |
| 类型： | 降压（降压），升压（升压），反相，Cuk，回扫，正向转换器 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.25 V ~ 60 V |
| 输入电压： | 3 V ~ 60 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 40kHz |
| 电流 - 输出： | 5A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-220-5 成形引线 |
| 包装： | 管件 |
| 供应商设备封装： | TO-220-5 |
LT1070/LT1071
TYPICAL PERFOR M A N CE CHARACTERISTICS
Transconductance of Error
Switch “Off” Characteristics
V C Pin Characteristics
Amplifier
1000
300
T J = 25 ° C
7000
– 30
900
800
700
600
200
100
0
V FB = 1.5V
(CURRENT INTO
V C PIN)
6000
5000
4000
θ
g m
0
30
60
500
400
300
V SUPPLY =
3V
15V
40V
55V
–100
– 200
V FB = 0.8V
(CURRENT OUT OF V C PIN)
3000
2000
1000
90
120
150
200
100
– 300
0
180
0
0
10 20 30 40 50 60 70 80 90 100
– 400
0
0.5
1.0
1.5
2.0
2.5
–1000
1k
10k
100k 1M
210
10M
SWITCH VOLTAGE (V)
1070/71 G19
V C PIN VOLTAGE (V)
1070/71 G20
FREQUENCY (Hz)
1070/71 G21
BLOCK DIAGRA M
V IN
2.3V
REG
FLYBACK
ERROR
AMP
16V
SWITCH
OUT
40kHz
OSC
MODE
SELECT
LOGIC
DRIVER
ANTISAT
5A, 75V
SWITCH
COMP
FB
ERROR
AMP
V C
+
SHUTDOWN
CIRCUIT
CURRENT
AMP
0.02 ?
(0.04 ? LT1071)
1.24V
REF
0.15V
GAIN ≈ 6
–
1070/71 BD
OPERATIO N
The LT1070/LT1071 is a current mode switcher. This
means that switch duty cycle is directly controlled by
switch current rather than by output voltage. Referring to
the Block Diagram, the switch is turned “on” at the start
of each oscillator cycle. It is turned “off” when switch
current reaches a predetermined level. Control of output
voltage is obtained by using the output of a voltage
sensing error amplifier to set current trip level. This
technique has several advantages. First, it has immediate
response to input voltage variations, unlike ordinary
switchers which have notoriously poor line transient
response. Second, it reduces the 90 ° phase shift at
10701fe
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1070HVMK | 制造商:n/a 功能描述:_ |
| LT1070HVMK/883 | 制造商:Linear Technology 功能描述:Conv DC-DC Single Non-Inv/Inv/Step Up/Step Down 3V to 60V 5-Pin(4+Tab) TO-3 |
| LT1070IT | 功能描述:IC REG MULTI CONFIG ADJ TO220-5 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 |
| LT1070IT#06 | 制造商:Linear Technology 功能描述:5A Power Switching Reg |
| LT1070IT#06PBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Non-Inv/Inv/Step Up/Step Down 3V to 60V 5-Pin(5+Tab) TO-220 制造商:Linear Technology 功能描述:IC REG MULTI CONFIG ADJ TO-220-5 |
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