Datasheet > ML4825CS

ML4825CS

更新时间： 2024-02-23 01:45:42

品牌	Logo	应用领域
MICRO-LINEAR		开关光电二极管控制器
页数	文件大小	规格书
9页	175K
描述
High Frequency Power Supply Controller

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中文翻译

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技术参数
数据手册

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ML4825CS 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	DIP, DIP16,.3	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.92	模拟集成电路 - 其他类型：	DUAL SWITCHING CONTROLLER
控制模式：	CURRENT/VOLTAGE-MODE	JESD-30 代码：	R-XDIP-T16
JESD-609代码：	e0	端子数量：	16
最高工作温度：	125 °C	最低工作温度：	-55 °C
最大输出电流：	0.2 A	封装主体材料：	CERAMIC
封装代码：	DIP	封装等效代码：	DIP16,.3
封装形状：	RECTANGULAR	封装形式：	IN-LINE
认证状态：	Not Qualified	子类别：	Switching Regulator or Controllers
表面贴装：	NO	最大切换频率：	1000 kHz
技术：	BIPOLAR	温度等级：	MILITARY
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
Base Number Matches：	1

ML4825CS 数据手册

May 1997

ML4825*

High Frequency Power Supply Controller

GENERAL DESCRIPTION

FEATURES

■ Practical operation at switching frequencies to 1.0MHz

■ High current (2A peak) dual totem pole outputs

■ Wide bandwidth error amplifier

The ML4825 High Frequency PWM Controller is an IC

controller optimized for use in Switch Mode Power

Supply designs running at frequencies to 1MHz.

Propagation delays are minimal through the comparators

and logic for reliable high frequency operation while slew

rate and bandwidth are maximized on the error amplifier.

This controller is designed to work in either voltage or

current mode and provides for input voltage feed forward.

■ Fully latched logic with double pulse suppression

■ Pulse-by-pulse current limiting

■ Soft start and maximum duty cycle control

■ Under voltage lockout with hysteresis

A 1V threshold current limit comparator provides cycle-

by-cycle current limit while exceeding a 1.4V threshold

initiates a soft-start cycle. The soft start pin doubles as a

maximum duty cycle clamp. An under-voltage lockout

circuit with 800mV of hysteresis assures low startup

current and drives the outputs low.

■ Precision trimmed 5.1V bandgap reference

■ Pin compatible improved replacement for UC1825

■ Fast shut down path from current limit to outputs

■ Outputs preset to known condition after under voltage

lockout

This controller is similar in architecture and performance

to the UC1825 controller, however the ML4825 includes

many features not found on the 1825. These features are

set in Italics.

■ Soft start latch ensures full soft start cycle

■ Outputs pull low for undervotage lockout

BLOCK DIAGRAM (Pin configuration shown for 16-pin version)

*Some Packages Are Obsolete or End Of Life

CLOCK OUT

OSC

1.25V

RAMP

COMP

–

E/A OUT

PWR V

ERROR

AMP

–

OUT A

INV

V+

POWER GND

POWER V

TF.F.

9µA

OUT B

PWR GND

–

ENABLE

REF

1.5V V

REF

/SD

–

REF

GEN

LIM

–

INTERNAL

BIAS

–

1.4V

SIGNAL GND

UNDER

VOLTAGE

LOCKOUT

12 3 4 5 6 7...9

中文翻译

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与ML4825CS相关器件

型号	品牌	获取价格	描述	数据表
ML4825IP	MICRO-LINEAR	获取价格	High Frequency Power Supply Controller
ML4825IQ	MICRO-LINEAR	获取价格	High Frequency Power Supply Controller
ML4825IS	MICRO-LINEAR	获取价格	High Frequency Power Supply Controller
ML4826	FAIRCHILD	获取价格	PFC and Dual Output PWM Controller Combo
ML4826	MICRO-LINEAR	获取价格	PFC and Dual Output PWM Controller Combo
ML4826CP-1	MICRO-LINEAR	获取价格	PFC and Dual Output PWM Controller Combo
ML4826CP-1	FAIRCHILD	获取价格	Power Factor Controller With Post Regulator, Current-mode, 0.5A, 250kHz Switching Freq-Max
ML4826CP2	FAIRCHILD	获取价格	PFC and Dual Output PWM Controller Combo
ML4826CP-2	MICRO-LINEAR	获取价格	PFC and Dual Output PWM Controller Combo
ML4826CS-1	MICRO-LINEAR	获取价格	PFC and Dual Output PWM Controller Combo

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