UC34463L-S08-R [UTC]

200KHZ, 2A PWM BUCK SWITCHING REGULATOR; 200KHZ ， 2A PWM降压开关稳压器


型号：	UC34463L-S08-R
厂家：	Unisonic Technologies
描述：	200KHZ, 2A PWM BUCK SWITCHING REGULATOR 200KHZ ， 2A PWM降压开关稳压器稳压器开关
文件：	总6页 (文件大小：192K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UNISONIC TECHNOLOGIES CO., LTD

UC34463

LINEAR INTEGRATED CIRCUIT

200KHZ, 2A PWM BUCK

SWITCHING REGULATOR

DESCRIPTION

UTC UC34463 is a PWM control, step down DC to DC power

supply, fixed out 5V, with CA/CV mode and output line voltage

loss compensation function. External EN port can control

shutdown of the IC.

IC internal integration of various protection function, such as

SCP, OTP, OCP and so on. The highest working voltage is up to

40V. The built-in compensation simplifies the peripheral

applications.

SOP-8

The packages are available in a standard 8-lead SOP8.

FEATURES

* Voltage mode non-synchronous PWM control

* Thermal-shutdown and current-limit protection

* ON/OFF shutdown control input

* Input voltage range up to 40V

* Output load current: 2A

* 200 kHz fixed frequency internal oscillator

* Low power standby mode

* Built-in switching transistor on chip

ORDERING INFORMATION

Ordering Number

Lead Free

Package

Packing

Halogen Free

UC34463L-S08-R

UC34463L-S08-T

UC34463G-S08-R

UC34463G-S08-T

SOP-8

Tape Reel

Tube

UC34463L-S08-R

(1) Packing Type

(2) Package Type

(1) R: Tape Reel, T: Tube

(2) S08: SOP-8

(3) Lead Free

(3) Halogen Free, L: Lead Free

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LINEAR INTEGRATED CIRCUIT

PIN CONFIGURATION

PIN DESCRIPTION

PIN NO.

PIN NAME

V_CC

DESCRIPTION

Operating voltage input

Compensation

Shutdown pin

COMP

GND

V_REF

S-

Ground.

5V reference voltage

Negative input

Positive input

S+

Switching output

BLOCK DIAGRAM

VREF

VCC

Bias

start

REF

2.5V

REF

OCP

switch

driver

PWM

COMP

S-

S+

OSC.

GND

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UC34463

LINEAR INTEGRATED CIRCUIT

ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

V_CC

RATINGS

+45

UNIT

Supply Voltage

Power Dissipation

Storage Temperature

Operating Temperature

P_D

Internally limited

-65 ~ +150

-40 ~ +125

T_STG

°C

T_OPR

°C

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.

ELECTRICAL CHARACTERISTICS (V_IN=12V, I_LOAD= 0.2A, unless otherwise specified)

PARAMETER

SYMBOL

F_OSC

TEST CONDITIONS

MIN

170

TYP MAX UNIT

Oscillator Frequency

Oscillator Frequency of Short Circuit

Protect

200

220

Khz

When current limit occurred and

F_SCP

Khz

_OUTlow

_OUT=1.5A no outside circuit

_OUT=0V force driver on

1.25

100

1.4

1.5

Saturation Voltage

V_SAT

Max. Duty Cycle(ON)

Min. Duty cycle(OFF)

V_OUT=0V force driver on

V_OUT=12V force driver off

peak current no outside circuit

_OUT=0 force driver on

no outside circuit

_OUT=12 force driver off

2.4

2.9

3.3

3.6

Current Limit

I_CL

Output = 0V

Output = -1V

-200

Output Leakage

Current

I_L

V_IN=24V

-5

Quiescent Current

I_Q

V_OUT=12 force driver off

150

200

0.6

1.3

Standby Quiescent Current

I_STBY

ON/OFF pin=5V, V_IN=24V

V_IL

V_IH

I_H

Low (regulator ON)

High (regulator OFF)

V_LOGIC=2.5V (OFF)

V_LOGIC=0.5V (ON)

T_Jincreasing

ON/OFF Pin Logic Input Threshold

Voltage

2.0

ON/OFF Pin Logic Input Current

ON/OFF Pin Input Current

Over Temperature Shutdown

Threshold

0.01

-1

°C

I_L

-0.1

175

150

T_Jdecreasing

UNISONIC TECHNOLOGIES CO., LTD

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UC34463

LINEAR INTEGRATED CIRCUIT

TYPICAL APPLICATION CIRCUIT

Note: If V_CC>24V, COMP pin to GND need to add 0.1uF (option) compensation capacitor

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UC34463

LINEAR INTEGRATED CIRCUIT

TYPICAL CHARACTERISTICS

1. Boot Power (CH2: Yellow 5V/div, CH3: Blue 2V/div)

V_IN=12V

V_IN=24V

Time (5ms/div)

2. CA Mode

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UC34463

LINEAR INTEGRATED CIRCUIT

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

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