Datasheet > HPA00001DTR

HPA00001DTR

更新时间： 2024-11-11 21:54:47

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
10页	160K
描述
LOW POWER CURRENT MODE PUSH-PULL PWM

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中文翻译

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数据手册

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HPA00001DTR 数据手册

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SLUS456D – APRIL 1999 - REVISED AUGUST 2002

D OR N PACKAGE

(TOP VIEW)

Dual Output Drive Stages in Push-Pull

Configuration

Current Sense Discharge Transistor to

Improve Dynamic Response

VDD

COMP

OUTA

OUTB

GND

130-µA Typical Starting Current

1-mA Typical Run Current

Operation to 1 MHz

Internal Soft Start

PW PACKAGE

(TOP VIEW)

On-Chip Error Amplifier With 2-MHz Gain

Bandwidth Product

OUTA

VDD

COMP

OUTB

GND

On Chip VDD Clamping

Output Drive Stages Capable of 500-mA

Peak-Source Current, 1-A Peak-Sink Current

description

The UCC3808A is a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCC3808A

contains all of the control and drive circuitry required for off-line or dc-to-dc fixed frequency current-mode switching

power supplies with minimal external parts count.

The UCC3808A dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the

oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60 ns to 200 ns

depending on the values of the timing capacitor and resistors, thus limiting each output stage duty cycle to less than

50%.

block diagram

COMP

VDD

OVERCURRENT

COMPARATOR

22 k

Ω

PEAK CURRENT

COMPARATOR

14 V

0.75 V

2.0 V

0.5 V

2.2 V

OUTA

VDD OK

OSCILLATOR

PWM

LATCH

1.2R

VDD–1 V

PWM

COMPARATOR

VDD

0.5 V

SOFT START

OUTB

GND

VOLTAGE

REFERENCE

SLOPE = 1 V/ms

Note: Pinout shown is for SOIC and PDIP packages. TSSOP pinout is different.

UDG-00097

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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与HPA00001DTR相关器件

型号	品牌	获取价格	描述	数据表
HPA00002DTR	TI	获取价格	LOW POWER CURRENT MODE PUSH-PULL PWM
HPA00021DGGR	TI	获取价格	14-BIT REGISTERED BUFFER WITH SSTL 2 INPUTS AND OUTPUTS
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HPA00034DTR	TI	获取价格	Single Ended Active Clamp/Reset PWM
HPA00035DTR	TI	获取价格	Single Ended Active Clamp/Reset PWM
HPA00036DTR	TI	获取价格	Single Ended Active Clamp/Reset PWM
HPA00086DDCR	TI	获取价格	HPA00086DDCR
HPA00138RHLR	TI	获取价格	4.5A BATTERY CHARGE CONTROLLER, 1100kHz SWITCHING FREQ-MAX, PQCC20, 3.50 X 4.50 MM, GREEN,
HPA00420RGVR	TI	获取价格	2.4-GHz RF Front End
HPA00530RGER	TI	获取价格	IC,SMPS CONTROLLER,VOLTAGE-MODE,LLCC,24PIN,PLASTIC

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