UCC28C45

所属类别：ACDC-和-DCDC-电源
产品名称：BiCMOS 低功耗电流模式 PWM 控制器
厂商：TI
生产批号：09+
封装：8MSOP, 8PDIP, 8SOIC
库存状态：有库存
库存量：12000
最低订购量：1
详细资料：

Product Introduction

The UCC38C4x home is a high-performance current-mode PWM controller. This is an enhanced version of BiCMOS with pin-to-pin compatibility with the industry standard UC384xA home and PWM controller UC384x home. In addition, the 7-volt low-voltage version of the start-up is available as a UCC38C40 and UCC38C41.

Providing the necessary features to control a fixed-frequency, peak-current-mode power supply, the series offers the following performance benefits: The device provides high operating frequencies up to one low start-up and operating current megahertz to improve efficiency, minimize start-up losses, and low operating power. The device also features a very fast current-detected output with a delay time of 35 nanoseconds and an improved peak output rise and fall time of ±1 for driving high currents directly from external MOSFETs.

characteristic

Enhance pin-to-pin compatibility with home and replacement UC3842A
1 - MHz operation
50μA start-up current, 100μA max
The low operating current of 2.3 mA is 52 kHz
Periodic overcurrent protection for cycles as fast as 35 ns
± 1 peak output current
Orbital time 25-ns rise and 20 nanosecond orbit output swing fall
± 1% of the initial edge of the 2.5-V error amplifier reference
Side vibration discharge current
New version of low voltage locking
The MSOP-8 package reduces board space
apply
- Switching power supply
- DC-to-DC converters
- Board-mounted power module

parameter

	UCC28C45
topology	Boost, reverse, forward
Control method	Current mode
Duty Cycle (Max) (%)	50
Frequency (max) (kHz)	1000
On/off of undervoltage lockout threshold (5)	8.4/7.6
Pin/Pack	8MSOP，8PDIP，8SOIC
(#) Regulated output	One
Operating Temperature Range (°C)	-40 to 105, -40 to 85

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UCC28C45

parameter

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