UC3824

更新时间： 2024-09-23 22:39:59

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
8页	387K
描述
High Speed PWM Controller

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UC3824 数据手册

UC1824

UC2824

UC3824

High Speed PWM Controller

FEATURES

DESCRIPTION

•

Complementary Outputs

The UC1824 family of PWM control ICs is optimized for high fre-

quency switched mode power supply applications. Particular care

was given to minimizing propagation delays through the comparators

and logic circuitry while maximizing bandwidth and slew rate of the

error amplifier. This controller is designed for use in either current-

mode or voltage mode systems with the capability for input voltage

feed-forward.

•

Practical Operation Switching Frequencies

to 1MHz

•

50ns Propagation Delay to Output

High Current Dual Totem Pole Outputs

(1.5A Peak)

Protection circuitry includes a current limit comparator with a 1V

threshold, a TTL compatible shutdown port, and a soft start pin which

will double as a maximum duty cycle clamp. The logic is fully latched

to provide jitter free operation and prohibit multiple pulses at an out-

put. An under-voltage lockout section with 800mV of hysteresis as-

sures low start up current. During under-voltage lockout, the outputs

are high impedance.

•

Wide Bandwidth Error Amplifier

Fully Latched Logic with Double Pulse

Suppression

•

Pulse-by-Pulse Current Limiting

Soft Start / Max. Duty Cycle Control

Under-Voltage Lockout with Hysteresis

Low Start Up Current (1.1 mA)

These devices feature totem pole outputs designed to source and

sink high peak currents from capacitive loads, such as the gate of a

power MOSFET. The on state is designed as a high level.

Trimmed Bandgap Reference (5.1V 1%)

BLOCK DIAGRAM

UDG-92034-1

3/97

12 3 4 5 6 7 8

中文翻译

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UC3824 替代型号

型号	品牌	替代类型	描述	数据表
UC2824	TI	功能相似	High Speed PWM Controller

与UC3824相关器件

型号	品牌	获取价格	描述	数据表
UC3824DW	TI	获取价格	HIGH SPEED PWM CONTROLLER
UC3824DWTR	TI	获取价格	HIGH SPEED PWM CONTROLLER
UC3824J	ETC	获取价格	Analog IC
UC3824L	ETC	获取价格	Analog IC
UC3824N	TI	获取价格	HIGH SPEED PWM CONTROLLER
UC3824Q	ETC	获取价格	Current/Voltage-Mode SMPS Controller
UC3824QTR	ETC	获取价格	Current/Voltage-Mode SMPS Controller
UC3825	TI	获取价格	High Speed PWM Controller
UC3825	ONSEMI	获取价格	high speed pwm controller
UC3825A	TI	获取价格	High Speed PWM Controller