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参数资料
| 型号： | LT3470AIDDB#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.56 A SWITCHING REGULATOR, PDSO8 |
| 封装： | 3 X 2 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, MO-229WECD-1, DFN-8 |
| 文件页数： | 18/20页 |
| 文件大小： | 197K |
| 代理商： | LT3470AIDDB#PBF |
LT3470A
7
3470afb
SHDN (Pin 8): The SHDN pin is used to put the LT3470A in
shutdown mode. Tie to ground to shut down the LT3470A.
Apply 2V or more for normal operation. If the shutdown
feature is not used, tie this pin to the VIN pin.
NC (Pin 7): This pin can be left floating, connected to VIN,
or tied to GND.
VIN (Pin 6): The VIN pin supplies current to the LT3470A’s
internal regulator and to the internal power switch. This
pin must be locally bypassed.
GND (Pin 5): Tie the GND pin to a local ground plane
below the LT3470A and the circuit components. Return
the feedback divider to this pin.
SW (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 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 2): The BIAS pin connects to the internal boost
Schottky diode and to the internal regulator. Tie to VOUT
when VOUT > 2.5V or to VIN otherwise. When VBIAS > 3V
the BIAS pin will supply current to the internal regulator.
FB (Pin 1): The LT3470A 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 (Pin 9):
Ground. Must be soldered to PCB.
PIN FUNCTIONS
BLOCK DIAGRAM
–
+
–
+
RQ
SQ
500ns
ONE SHOT
VREF
1.25V
BURST MODE
DETECT
SW
GND
3470a BD
FB
R2
R1
SHDN
ENABLE
VIN
NC
BIAS
BOOST
L1
C2
C3
VOUT
gm
C1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3470AIDDB-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Buck Regulator with Integrated Boost and Catch Diodes |
| LT3470EDDB | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 4V to 40V 8-Pin DFN EP |
| LT3470EDDB#PBF | 制造商:Linear Technology 功能描述:BUCK 40V 0.3A 8DFN 制造商:Linear Technology 功能描述:BUCK, 40V, 0.3A, 8DFN |
| LT3470EDDB#TRMPBF | 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:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
| LT3470EDDB#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:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
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