Datasheet > UC2856-Q1

UC2856-Q1

更新时间： 2024-11-23 11:47:51

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
12页	210K
描述
IMPROVED CURRENT-MODE PWM CONTROLLER

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数据手册

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UC2856-Q1 数据手册

UC2856-Q1

www.ti.com ...................................................................................................................................................................................................... SLVS863–JUNE 2008

IMPROVED CURRENT-MODE PWM CONTROLLER

FEATURES

•

Qualified for Automotive Applications

DW PACKAGE

(TOP VIEW)

Pin-for-Pin Compatible With the UC2846

65-ns Typical Delay From Shutdown to

Outputs and 50-ns Typical Delay From Sync to

Outputs

CL SS

VREF

CS−

CS+

EA+

EA−

COMP

SHUTDOWN

VIN

BOUT

•

Improved Current Sense Amplifier With

Reduced Noise Sensitivity

GND

Differential Current Sense With 3-V

Common-Mode Range

AOUT

SYNC

Trimmed Oscillator Discharge Current for

Accurate Deadband Control

P0008-01

•

Accurate 1-V Shutdown Threshold

High Current Dual Totem Pole Outputs

(1.5-A Peak)

•

TTL Compatible Oscillator SYNC Pin

Thresholds

ESD Protection

–

4-kV Human-Body Model (HBM)

500-V Charged-Device Model (CDM)

DESCRIPTION

The UC2856 is a high performance version of the popular UC2846 series of current mode controllers, and is

intended for both design upgrades and new applications where speed and accuracy are important. All input to

output delays have been minimized, and the current sense output is slew rate limited to reduce noise sensitivity.

Fast 1.5-A peak output stages have been added to allow rapid switching of power FETs.

A low impedance TTL compatible sync output has been implemented with a 3-state function when used as a

sync input.

Internal chip grounding has been improved to minimize internal noise caused when driving large capacitive

loads. This, in conjunction with the improved differential current-sense amplifier, results in enhanced noise

immunity.

Other features include a trimmed oscillator current (8%) for accurate frequency and dead-time control, a 1-V 5%

shutdown threshold, and 4-kV minimum ESD protection (HBM) on all pins.

ORDERING INFORMATION⁽¹⁾

T_A

PACKAGE⁽²⁾

ORDERABLE PART NUMBER

TOP-SIDE MARKING

UC2856Q1

–40°C to 125°C

SOP – DW

Reel of 2000

UC2856QDWRQ1

(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...12

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与UC2856-Q1相关器件

型号	品牌	获取价格	描述	数据表
UC2856QDWR	TI	获取价格	IMPROVED CURRENT MODE PWM CONTROLLER
UC2856QDWRQ1	TI	获取价格	IMPROVED CURRENT-MODE PWM CONTROLLER
UC2856QP	ETC	获取价格	Current-Mode SMPS Controller
UC2856QTR	TI	获取价格	1.5A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PQCC20, PLASTIC, LCC-20
UC285-ADJ	TI	获取价格	FAST TRANSIENT REPONSE 5-A LOW-DROPOUT REGULATOR
UC285DW	TI	获取价格	UC285DW
UC285DWTR	TI	获取价格	UC285DWTR
UC285J	TI	获取价格	UC285J
UC285L	TI	获取价格	暂无描述
UC285N	TI	获取价格	UC285N

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