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参数资料
| 型号： | LT3434IFE |
| 厂商： | Linear Technology |
| 文件页数： | 6/24页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 3A 16TSSOP |
| 标准包装： | 95 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.25 V ~ 54 V |
| 输入电压： | 3.3 V ~ 60 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 200kHz |
| 电流 - 输出： | 3A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 16-TSSOP-EP |
LT3434
TYPICAL PERFOR A CE CHARACTERISTICS
3.3V Dropout Operation
5V Dropout Operation
Burst Mode Operation
4.0
V OUT = 3.3V
6
V OUT = 5V
3.5
BOOST DIODE = DIODES INC B1100
5
BOOST DIODE = DIODES INC B1100
V OUT
3.0
50mV/DIV
2.5
4
LOAD CURRENT
2.0
1.5
1.0
0.5
0
LOAD CURRENT
0.25A
LOAD CURRENT
2.5A
3
2
1
0
0.25A
LOAD CURRENT
2.5A
I OUT
500mA/DIV
V IN = 12V
V OUT = 3.3V
I Q = 100 μ A
5ms/DIV
3434 G14
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0
1
2
3
4
5
6
INPUT VOLTAGE (V)
3434 G24
INPUT VOLTAGE (V)
3434 G25
V OUT
50mV/DIV
I OUT
500mA/DIV
Burst Mode Operation
V OUT
50mV/DIV
I OUT
1A/DIV
No Load 2A Step Response
V OUT
50mV/DIV
I OUT
1A/DIV
Step Response
V IN = 12V
V OUT = 3.3V
I Q = 100 μ A
5 μ s/DIV
3434 G15
V IN = 12V
V OUT = 3.3V
C OUT = 100 μ F
500 μ s/DIV
3434 G17
V IN = 12V 500μs/DIV
V OUT = 3.3V
C OUT = 100 μ F
I LOAD(DC) = 500mA
3434 G18
PI FU CTIO S
NC (Pin 1): No Connection.
SW (Pins 2, 5): The SW pin is the emitter of the on-chip
power NPN switch. This pin is driven up to the input pin
voltage during switch on time. Inductor current drives the
SW pin negative during switch off time. Negative voltage
is clamped with the external catch diode. Maximum nega-
tive switch voltage allowed is –0.8V.
V IN (Pins 3, 4): This is the collector of the on-chip power
NPN switch. V IN powers the internal control circuitry when
a voltage on the BIAS pin is not present. High dI/dt edges
occur on this pin during switch turn on and off. Keep the
path short from the V IN pin through the input bypass
capacitor, through the catch diode back to SW. All trace
inductance on this path will create a voltage spike at switch
off, adding to the V CE voltage across the internal NPN.
BOOST (Pin 6): The BOOST pin is used to provide a drive
voltage, higher than the input voltage, to the internal
bipolar NPN power switch. Without this added voltage, the
typical switch voltage loss would be about 1.5V. The
additional BOOST voltage allows the switch to saturate
and its voltage loss approximates that of a 0.1 ? FET
structure.
C T (Pin 7): A capacitor on the C T pin determines the amount
of delay time between the PGFB pin exceeding its thresh-
old (V PGFB ) and the PG pin set to a high impedance state.
When the PGFB pin rises above V PGFB , current is sourced
3434fb
6
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相关代理商/技术参数 |
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| LT3434IFE#PBF | 功能描述:IC REG BUCK ADJ 3A 16TSSOP 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 |
| LT3434IFE#PBF | 制造商:Linear Technology 功能描述:IC, STEP-DOWN REGULATOR, 16-TSSOP |
| LT3434IFE#TR | 功能描述:IC REG BUCK ADJ 3A 16TSSOP 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 |
| LT3434IFE#TRPBF | 功能描述:IC REG BUCK ADJ 3A 16TSSOP 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 |
| LT3434IFEPBF | 制造商:Linear Technology 功能描述:DC-DC Converter Step-Down 60V TSSOP16EP |
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