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参数资料
| 型号： | LT3470HDDB |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.2 A SWITCHING REGULATOR, PDSO8 |
| 封装： | 3 X 2 MM, 0.75MM INCH HEIGHT, MO-229WECD-1, PLASTIC, DFN-8 |
| 文件页数： | 17/20页 |
| 文件大小： | 256K |
| 代理商： | LT3470HDDB |
6
LT3470
3470fc
UU
U
PI FU CTIO S
SHDN (Pin 1/Pin 8): The SHDN pin is used to put the
LT3470 in shutdown mode. Tie to ground to shut down the
LT3470. Apply 2V or more for normal operation. If the
shutdown feature is not used, tie this pin to the VIN pin.
NC (Pin 2/Pin 7): This pin can be left floating or connected
to VIN.
VIN (Pin 3/Pin 6): The VIN pin supplies current to the
LT3470’s internal regulator and to the internal power
switch. This pin must be locally bypassed.
GND (Pin 4/Pin 5): Tie the GND pin to a local ground plane
below the LT3470 and the circuit components. Return the
feedback divider to this pin.
SW (Pin 5/Pin 4): The SW pin is the output of the internal
power switch. Connect this pin to the inductor, catch diode
and boost capacitor.
BOOST (Pin 6/Pin 3): The BOOST pin is used to provide a
drive voltage, which is higher than the input voltage, to the
internal bipolar NPN power switch.
BIAS (Pin 7/Pin 2): The BIAS pin connects to the internal
boost Schottky diode and to the internal regulator. Tie to
VOUT when VOUT > 2V or to VIN otherwise. When VBIAS >
3V the BIAS pin will supply current to the internal
regulator.
FB (Pin 8/Pin 1): The LT3470 regulates its feedback pin
to 1.25V. Connect the feedback resistor divider tap to this
pin. Set the output voltage according to VOUT = 1.25V
(1 + R1/R2) or R1 = R2 (VOUT/1.25 – 1).
Exposed Pad (DD, Pin 9): Ground. Must be soldered
to PCB.
(ThinSOT/DD)
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Boost Diode Forward Voltage
Minimum Input Voltage, VOUT = 3.3V
Minimum Input Voltage, VOUT = 5V
BOOST DIODE CURRENT (mA)
0
SCHOTTKY
V
F(V)
500
600
700
200
3470 G17
400
300
0
50
100
150
100
200
900
800
LOAD CURRENT (mA)
0
3.0
INPUT
VOLTAGE
(V)
3.5
4.0
4.5
5.0
5.5
6.0
50
100
150
200
3470 G18
TA = 25°C
VIN TO START
VIN TO RUN
LOAD CURRENT (mA)
0
INPUT
VOLTAGE
(V)
6
7
200
3470 G19
5
4
50
100
150
8
TA = 25°C
VIN TO START
VIN TO RUN
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相关代理商/技术参数 |
参数描述 |
|---|---|
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| LT3470HDDB#TRPBF | 功能描述:IC REG BUCK ADJ 0.2A 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LT3470HTS8 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Buck Regulator with Integrated Boost and Catch Diodes |
| LT3470HTS8#PBF | 制造商:Linear Technology 功能描述:SP-SWREG/Monolithic, Cut Tape 300mA, 40V MicroPower Step-Down Regulator with Int |
| LT3470HTS8#TRMPBF | 功能描述:IC REG BUCK ADJ 0.2A TSOT23-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
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