Datasheet > 电源电路 > 开关式稳压器或控制器> UCC38083P

UCC38083P

更新时间： 2024-11-28 12:01:43

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
27页	918K
描述
8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION

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技术参数
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替代型号

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UCC38083P 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	DIP
包装说明：	DIP, DIP8,.3	针数：	8
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	1.58
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最小输入电压：	9.3 V
标称输入电压：	10 V	JESD-30 代码：	R-PDIP-T8
JESD-609代码：	e4	长度：	9.81 mm
功能数量：	1	端子数量：	8
最高工作温度：	70 °C	最低工作温度：
最大输出电流：	1 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP	封装等效代码：	DIP8,.3
封装形状：	RECTANGULAR	封装形式：	IN-LINE
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
座面最大高度：	3.9 mm	子类别：	Switching Regulator or Controllers
表面贴装：	NO	切换器配置：	PUSH-PULL
最大切换频率：	1000 kHz	技术：	BICMOS
温度等级：	COMMERCIAL	端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	6.35 mm	Base Number Matches：	1

UCC38083P 数据手册

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SLUS488E − SEPTEMBER 2002 − REVISED JULY 2009

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FEATURES

APPLICATIONS

Programmable Slope Compensation

High-Efficiency Switch-Mode Power Supplies

Telecom dc-to-dc Converters

Internal Soft-Start on the UCC38083/4

Cycle-by-Cycle Current Limiting

Point-of-Load or Point-of-Use Power Modules

Low Start-Up Current of 120 µA and 1.5 mA

Typical Run Current

Low-Cost Push-Pull and Half-Bridge

Applications

Single External Component Oscillator

Programmable from 50 kHz to 1 MHz

DESCRIPTION

The UCC38083/4/5/6 is a family of BiCMOS pulse width

modulation (PWM) controllers for dc-to-dc or off-line

fixed-frequency current-mode switching power

supplies. The dual output stages are configured for the

push-pull topology. Both outputs switch at half the

oscillator frequency using a toggle flip-flop. The dead

time between the two outputs is typically 110 ns, limiting

each output’s duty cycle to less than 50%.

High-Current Totem-Pole Dual Output Stage

Drives Push-Pull Configuration with 1-A Sink

and 0.5-A Source Capability

Current Sense Discharge Transistor to

Improve Dynamic Response

Internally Trimmed Bandgap Reference

Undervoltage Lockout with Hysteresis

The new UCC3808x family is based on the UCC3808A

architecture. The major differences include the addition

of a programmable slope compensation ramp to the CS

signal and the removal of the error amplifier. The current

flowing out of the ISET pin through an external resistor

is monitored internally to set the magnitude of the slope

compensation function. This device also includes an

^OUTinternal discharge transistor from the CS pin to ground,

which is activated at each clock cycle after the pulse is

terminated. This discharges any filter capacitance on

the CS pin during each cycle and helps minimize filter

capacitor values and current sense delay.

BASIC APPLICATION

POWER

TRANSFORMER

VDD

UCC3808x

CTRL OUTA

The UCC38083 and the UCC38084 devices have a

typical soft-start interval time of 3.5 ms while the

UCC38085 and the UCC38086 has less than 100 µs for

applications where internal soft-start is not desired.

OUTB

ISET

The UCC38083 and the UCC38085 devices have the

turn-on/off thresholds of 12.5 V / 8.3 V, while the

UCC38084 and the UCC38086 has the turn-on/off

thresholds of 4.3 V / 4.1 V. Each device is offered in 8-pin

TSSOP (PW), 8-pin SOIC (D) and 8-pin PDIP (P)

packages.

GND

SET

FEEDBACK

UDG−01080

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

semiconductor products and disclaimers thereto appears at the end of this data sheet.

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UCC38083P 替代型号

型号	品牌	替代类型	描述	数据表
UCC38083PG4	TI	类似代替	8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION

与UCC38083P相关器件

型号	品牌	获取价格	描述	数据表
UCC38083PG4	TI	获取价格	8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION
UCC38083PWG4	TI	获取价格	IC 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO8, GREEN, PLASTIC, TSSOP-8,
UCC38083PWR	TI	获取价格	1A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO8, GREEN, PLASTIC, TSSOP-8
UCC38083PWRG4	TI	获取价格	1A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO8, GREEN, PLASTIC, TSSOP-8
UCC38084	TI	获取价格	8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION
UCC38084D	TI	获取价格	8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION
UCC38084DG4	TI	获取价格	8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION
UCC38084DR	TI	获取价格	8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION
UCC38084DRG4	TI	获取价格	8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION
UCC38084P	TI	获取价格	8-PIN CURRENT MODE PUSH-PULL PWM CONTROLLERS WITH PROGRAMMABLE SLOPE COMPENSATION

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