UC2860

更新时间： 2024-11-23 08:26:23

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
9页	586K
描述
Resonant Mode Power Supply Controller

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中文翻译

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UC2860 数据手册

UC1860

UC2860

UC3860

Resonant Mode Power Supply Controller

FEATURES

DESCRIPTION

•

3MHz VFO Linear over 100:1 Range

The UC1860 family of control ICs is a versatile system for resonant mode

power supply control. This device easily implements frequency modulated

fixed-on-time control schemes as well as a number of other power supply

control schemes with its various dedicated and programmable features.

•

5MHz Error Amplifier with Controlled

Output Swing

•

Programmable One Shot Timer—

Down to 100ns

The UC1860 includes a precision voltage reference, a wide-bandwidth er-

ror amplifier, a variable frequency oscillator operable to beyond 3MHz, an

oscillator-triggered one-shot, dual high-current totem-pole output drivers,

and a programmable toggle flip-flop. The output mode is easily pro-

grammed for various sequences such as A, off, B, off; A & B, off; or A, B,

off. The error amplifier contains precision output clamps that allow pro-

gramming of minimum and maximum frequency.

•

Precision 5V Reference

Dual 2A Peak Totem Pole Outputs

Programmable Output Sequence

Programmable Under Voltage Lockout

Very Low Start Up Current

The device also contains an uncommitted comparator, a fast comparator

for fault sensing, programmable soft start circuitry, and a programmable

restart delay. Hic-up style response to faults is easily achieved. In addi-

tion, the UC1860 contains programmable under voltage lockout circuitry

that forces the output stages low and minimizes supply current during

start-up conditions.

Programmable Fault Management &

Restart Delay

•

Uncommitted Comparator

ABSOLUTE MAXIMUM RATINGS

Supply Voltage (pin 19) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V Comparator Output Voltage (pin 15) . . . . . . . . . . . . . . . . . . 15V

Output Current, Source or Sink (pins 17 & 20) Soft Start or Restart Delay Sink Current (pins 22 & 23) . . . 5mA

DC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8A Power Dissipation at TA = 50°C (DIP) . . . . . . . . . . . . . . . 1.25W

Pulse (0.5µs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0A Power Dissipation at TA = 50°C (PLCC) . . . . . . . . . . . . . . . . 1W

Power Ground Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.2V Lead Temperature (Soldering, 10 seconds) . . . . . . . . . . . 300°C

Inputs (pins 1, 2, 3, 4, 8, 9, 11, 12,

Note: All voltages are with respect to signal ground and all

currents are positive into the specified terminal.

Pin numbers refer to the DIP.

13, 14, 21, 22, 23 & 24) . . . . . . . . . . . . . . . . . . . . . . -0.4 to 6V

Error Amp Output Current, Source or Sink (pin 5). . . . . . . . 2mA

IVFO Current (pin 7). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA

Comparator Output Current (pin 15) . . . . . . . . . . . . . . . . . . 5mA

Refer to Packaging Section of Databook for thermal

limitations and considerations of packages.

BLOCK DIAGRAM

10/93

12 3 4 5 6 7...9

中文翻译

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与UC2860相关器件

型号	品牌	获取价格	描述	数据表
UC2860DW	TI	获取价格	Resonant Mode Power Supply Controller
UC2860DWTR	TI	获取价格	Resonant Mode Power Supply Controller
UC2860J	ETC	获取价格	Analog IC
UC2860L	ETC	获取价格	Analog IC
UC2860N	TI	获取价格	Resonant Mode Power Supply Controller
UC2860Q	TI	获取价格	Resonant Mode Power Supply Controller
UC2860QTR	TI	获取价格	Resonant Mode Power Supply Controller
UC2861	TI	获取价格	Resonant-Mode Power Supply Controllers
UC2861-2868	ETC	获取价格	Resonant-Mode Power Supply Controllers
UC2861DW	TI	获取价格	Resonant-Mode Power Supply Controllers

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