UC2527BL

更新时间： 2024-09-14 03:57:23

品牌	Logo	应用领域
德州仪器 - TI		稳压器开关式稳压器或控制器电源电路开关式控制器脉冲
页数	文件大小	规格书
14页	651K
描述
Regulating Pulse Width Modulators

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中文翻译

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技术参数
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UC2527BL 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	QLCC	针数：	20
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.84
Is Samacsys：	N	控制模式：	VOLTAGE-MODE
JESD-30 代码：	S-XQCC-N20	端子数量：	20
最高工作温度：	85 °C	最低工作温度：	-40 °C
最大输出电流：	0.1 A	封装主体材料：	CERAMIC
封装代码：	QCCN	封装等效代码：	LCC20,.35SQ
封装形状：	SQUARE	封装形式：	CHIP CARRIER
认证状态：	Not Qualified	子类别：	Switching Regulator or Controllers
表面贴装：	YES	最大切换频率：	500 kHz
技术：	BIPOLAR	温度等级：	INDUSTRIAL
端子形式：	NO LEAD	端子节距：	1.27 mm
端子位置：	QUAD	Base Number Matches：	1

UC2527BL 数据手册

application

INFO

UC1525B UC1527B

UC2525B UC2527B

UC3525B UC3527B

available

Regulating Pulse Width Modulators

FEATURES

DESCRIPTION

• 8 to 35V Operation

The UC1525B/1527B series of pulse width modulator integrated circuits

are designed to offer improved performance and lowered external parts

count when used in designing all types of switching power supplies. The

on-chip +5.1V buried zener reference is trimmed to ±0.75% and the input

common-mode range of the error amplifier includes the reference voltage,

eliminating external resistors. A sync input to the oscillator allows multiple

units to be slaved or a single unit to be synchronized to an external system

clock. A single resistor between the CT and the discharge terminals provide

a wide range of dead time adjustment. These devices also feature built-in

soft-start circuitry with only an external timing capacitor required. A shut-

down terminal controls both the soft-start circuitry and the output stages,

providing instantaneous turn off through the PWM latch with pulsed shut-

down, as well as soft-start recycle with longer shutdown commands. These

functions are also controlled by an undervoltage lockout which keeps the

outputs off and the soft-start capacitor discharged for sub-normal input volt-

ages. This lockout circuitry includes approximately 500mV of hysteresis for

jitter-free operation. Another feature of these PWM circuits is a latch follow-

ing the comparator. Once a PWM pulse has been terminated for any rea-

son, the outputs will remain off for the duration of the period. The latch is

reset with each clock pulse. The output stages are totem-pole designs ca-

pable of sourcing or sinking in excess of 200mA. The UC1525B output

stage features NOR logic, giving a LOW output for an OFF state. The

UC1527B utilizes OR logic which results in a HIGH output level when OFF.

• 5.1V Buried Zener Reference

Trimmed to ±0.75%

• 100Hz to 500kHz Oscillator Range

• Separate Oscillator Sync Terminal

• Adjustable Deadtime Control

• Internal Soft-Start

• Pulse-by-Pulse Shutdown

• Input Undervoltage Lockout with

Hysteresis

• Latching PWM to Prevent Multiple

Pulses

• Dual Source/Sink Output Drivers

• Low Cross Conduction Output Stage

• Tighter Reference Specifications

BLOCK DIAGRAM

UDG-95055

SLUS376 JULY 1995

12 3 4 5 6 7...14

中文翻译

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与UC2527BL相关器件

型号	品牌	获取价格	描述	数据表
UC2527BN	TI	获取价格	Regulating Pulse Width Modulators
UC2527BQ	TI	获取价格	Regulating Pulse Width Modulators
UC2527BQTR	TI	获取价格	暂无描述
UC2543	TI	获取价格	Power Supply Supervisory Circuit
UC2543DW	TI	获取价格	Power Supply Supervisory Circuit
UC2543DWG4	TI	获取价格	Power Supply Supervisory Circuit
UC2543DWTR	ETC	获取价格	Voltage Detector
UC2543DWTRG4	TI	获取价格	IC,VOLT DETECTOR,ADJUSTABLE,BIPOLAR,SOP,16PIN,PLASTIC
UC2543J	TI	获取价格	Power Supply Supervisory Circuit
UC2543L	ETC	获取价格	Voltage Detector

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