Datasheet > UC2833L

UC2833L

更新时间： 2024-11-30 23:38:55

品牌	Logo	应用领域
其他 - ETC		稳压器
页数	文件大小	规格书
8页	762K
描述
Positive Adjustable Voltage Regulator

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中文翻译

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UC2833L 数据手册

UC1832/3

UC2832/3

UC3832/3

Precision Low Dropout Linear Controllers

FEATURES

DESCRIPTION

•

Precision 1% Reference

The UC1832 and UC1833 series of precision linear regulators include all the

control functions required in the design of very low dropout linear regulators.

Additionally, they feature an innovative duty-ratio current limiting technique

which provides peak load capability while limiting the average power dissipa-

tion of the external pass transistor during fault conditions. When the load cur-

rent reaches an accurately programmed threshold, a gated-astable timer is

enabled, which switches the regulator’s pass device off and on at an externally

programmable duty-ratio. During the on-time of the pass element, the output

current is limited to a value slightly higher than the trip threshold of the duty-ra-

tio timer. The constant-current-limit is programmable on the UCx832 to allow

higher peak current during the on-time of the pass device. With duty-ratio con-

trol, high initial load demands and short circuit protection may both be accom-

modated without extra heat sinking or foldback current limiting. Additionally, if

the timer pin is grounded, the duty-ratio timer is disabled, and the IC operates

in constant-voltage/constant-current regulating mode.

•

Over-Current Sense Threshold

Accurate to 5%

•

Programmable Duty-Ratio

Over-Current Protection

•

4.5V to 36V Operation

100mA Output Drive, Source or

Sink

•

Under-Voltage Lockout

Additional Features of the UC1832

series:

•

Adjustable Current Limit to

Current Sense Ratio

These IC’s include a 2 Volt (±1%) reference, error amplifier, UVLO, and a high

current driver that has both source and sink outputs, allowing the use of either

NPN or PNP external pass transistors. Safe operation is assured by the inclu-

sion of under-voltage lockout (UVLO) and thermal shutdown.

•

Separate +VIN terminal

Programmable Driver Current

Limit

The UC1833 family includes the basic functions of this design in a low-cost, 8-

pin mini-dip package, while the UC1832 series provides added versatility with

the availability of 14 pins. Packaging options include plastic (N suffix), or ce-

ramic (J suffix). Specified operating temperature ranges are: commercial (0°C

to 70°C), order UC3832/3 (N or J); industrial (–25°C to 85°C), order UC2832/3

(N or J); and military (–55°C to 125°C), order UC1832/3J. Surface mount

packaging is also available.

•

Access to V_REFand E/A(+)

Logic-Level Disable Input

BLOCK DIAGRAMS

UDG-92040

6/94

12 3 4 5 6 7 8

中文翻译

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与UC2833L相关器件

型号	品牌	获取价格	描述	数据表
UC2833N	TI	获取价格	Precision Low Dropout Linear Controllers
UC2833NG4	TI	获取价格	Precision Low Dropout Linear Controllers
UC2833Q	ETC	获取价格	Positive Adjustable Voltage Regulator
UC2833QTR	TI	获取价格	SPECIALTY ANALOG CIRCUIT, PQCC20, PLASTIC, LCC-20
UC2834	TI	获取价格	High Efficiency Linear Regulator
UC2834DW	TI	获取价格	High Efficiency Linear Regulator
UC2834DWG4	TI	获取价格	High Efficiency Linear Regulator
UC2834DWTR	TI	获取价格	High Efficiency Linear Regulator
UC2834DWTRG4	TI	获取价格	High Efficiency Linear Regulator
UC2834J	TI	获取价格	High Efficiency Linear Regulator

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