参数资料
型号: LA5757TP-TL-E
厂商: ON Semiconductor
文件页数: 3/6页
文件大小: 0K
描述: IC REG BUCK ADJ TP5HFA
标准包装: 700
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 可调至 1.255V
输入电压: 4.5 V ~ 32 V
频率 - 开关: 300kHz
同步整流器:
工作温度: -30°C ~ 125°C
安装类型: 表面贴装
封装/外壳: TO-252-5,DPak(4 引线 + 接片),TO-252AD
包装: 带卷 (TR)
供应商设备封装: TP5HFA
LA5757TP
Block Diagram
VIN 1
2 SWOUT
Constnt
Current
Circuit
Reg.
OSC
Comp.
RESET
OCP
DRIVE
TSD
2 VOS
Amp.
ON/OFF Comp.
5
SS
0.4V
3
GND
VREF
Application Circuit Example
L1
VIN
LA5757TP
SWOUT
C1
D1
C2
SS
GND
VOS
R2
R1
C3
Notes: C3 is for the soft start function. Delete C3 and keep the SS pin open when the soft function is not necessary.
Description of Functional Settings
1. Calculation equation to set the output voltage
This IC controls the switching output so that the VOS pin voltage becomes 1.255V (typ).
The equation to set the output voltage is as follows:
VO = 1+
R2
R1
× 1.255 V(typ)
The VOS pin has the inrush current of 1 μ A (typ). Therefore, the error becomes larger when R1 and R2 resistance
values are large.
No.A1439-3/6
相关PDF资料
PDF描述
LA5759-MDB-E IC REG BUCK ADJ TO220-5
LA5771MP-DL-E IC REG BUCK 3.3V SMP5
LA5774-E IC REG BUCK ADJ TO220-5H
LA5774MP-DL-E IC REG BUCK ADJ SMP5
LA5779-E IC REG BUCK ADJ TO220-5H
相关代理商/技术参数
参数描述
LA5759 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Monolithic Linear IC Separately-excited Step-down Switching Regulator (Variable Type)
LA5759-MDB-E 功能描述:直流/直流开关调节器 SWITCHING REGULATOR RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
LA5771 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Monolithic Linear IC Separately-excited Step-down Switching Regulator (3.3V)
LA5771-HK-E 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
LA5771MP 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Separately-excited Step-down Switching Regulator (3.3V)