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參數(shù)資料

型號：	TLE6389GVT
廠商：	INFINEON TECHNOLOGIES AG
元件分類：	穩(wěn)壓器
英文描述：	SWITCHING CONTROLLER, 420 kHz SWITCHING FREQ-MAX, PDSO14
封裝：	PLASTIC, DSO-14
文件頁數(shù)：	12/37頁
文件大小：	368K
代理商：	TLE6389GVT

TLE 6389

Preliminary data sheet Rev. 1.0

2003-05-05

1.2

Short functional description

The TLE6389 step-down DC-DC switching controllers provide high efficiency over loads

ranging from 1mA up to 3A. A unique PWM/PFM control scheme operates with up to a

100% duty cycle, resulting in very low dropout voltage. This control scheme eliminates

minimum load requirements and reduces the supply current under light loads to 100A.

For the start up procedure a slow start feature is implemented to avoid overshoots at the

output. The TLE6389 step-down controllers drive an external P-channel MOSFET,

allowing design flexibility for applications up to 15W of output power. A high switching

frequency and operation in continuous-conduction mode allow the use of tiny surface-

mount inductors. Output capacitor requirements are also reduced, minimizing PC board

area and system costs. The output voltage is preset at 5V (TLE6389G50-1 and

TLE6389G50) and adjustable for the TLE6389GV. Input voltages can be up to 60V.

1.3

Pin Configuration (top view)

P-D-SO-14

ENABLE /

SI_ENABLE

VOUT

GND

SYNC

SI_GND

GDRV

BDS

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