CX8822 Convertor Datasheet

CX8822 Datasheet, PDF, Equivalent


Part Number

CX8822

Description

Step-Down DC/DC Convertor

Manufacture

High-Neon

Total Page 6 Pages
Datasheet
Download CX8822 Datasheet


CX8822
High-Neon microeconomics Inc.
CX8822
33V 3A, CV&CC Synchronous Step-Down DC/DC Convertor
概述
特点
CX8822是一款输入耐压可达33V,并且
能够实现精确恒压以及恒流的降压型DC-DC
转换器
CX8822内置50mΩ High-side PMOS
以及30mΩ Low-side NMOS,可支持3A
续输出电流
CX8822 具 备 高 性 能 的 负 载 响 应 以 及 输
入电压响应能力,同时精确的恒压和恒流控制
环路实现极小的负载调整率和线性调整率
CX8822无需外部补偿,可以依靠自身内
置稳定环路实现恒流以及恒压控制,同时具备
线缆压降补偿功能
CX8822是一款应用极简,性能卓越,稳
定可靠的恒压恒流降压型DC-DC转换器
- 高性价比车载充电器方案
- 输入耐压可达35V
- 内置50mΩ High-side PMOS
- 内置30mΩ Low-side NMOS
- 可支持3A持续输出电流
- 内置高精度恒流以及恒压控制环路
- 恒流精度 ±7%
- 恒压精度 ±2%
- 无需外部补偿
- 135k Hz固定开关频率
- 线缆补偿压降
- 超简洁应用线路
- 短路保护(SCP),过热保护(OTP),过
压保护(OVP)以及欠压保护(UVLO
- SOP-8L封装形式
典型应用
VIN
GND
VIN
SW
C1
50V
47uF
C2
50V
1uF
ISEN
VOUT
GND
L1
3.5A&33uH
RSEN
20mΩ
5.1V 2.5A
OUT+
C4
16V
220uF
C5
6.3V
4.7uF
OUT-
Page1-6
Rev. 1.0 Mar-06-2013

CX8822
High-Neon microeconomics Inc.
引脚定义
CX8822
33V 3A, CV&CC Synchronous Step-Down DC/DC Convertor
VOUT 1
ISEN 2
NC 3
VIN 4
CX8822
SOP-8L
8 GND
7 GND
6 SW
5 SW
IN
1
2
3
4
5, 6
78
NAME
VOUT
ISEN
NC
VIN
SW
GND
DISCRIPTION
Output Voltage Sense Input
Output Current Sense Input
Not Connected
Power Supply Input. Bypass this pin with a 1μF ceramic
capacitor and 47uF electrolytic capacitor to GND, placed as
close to the IC as possible.
Switch, Connect to the Inductor
Ground
额定电气参数 (at TA = 25°C)
Characteristics
VIN to GND
SW to GND
VOUT, ISEN to GND
Junction to Ambient Thermal Resistance
Operating Junction Temperature
Storage Junction Temperature
Lead Temperature (Soldering 10 sec.)
Symbol
Rating
-0.3 to 33
-0.3 to 33
-0.3 to + 20
105
-40 to 150
-55 to 150
260
Unit
V
V
V
°C/W
°C
°C
°C
Page2-6
Rev. 1.0 Mar-06-2013


Features .
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