Datasheet > UCC39151PWP

UCC39151PWP

更新时间： 2024-11-19 23:39:03

品牌	Logo	应用领域
其他 - ETC		光电二极管信息通信管理
页数	文件大小	规格书
6页	229K
描述
Power Control/Management

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UCC39151PWP 数据手册

UCC39151

15V Programmable Hot Swap Power Manager

FEATURES

DESCRIPTION

• Integrated 0.15Ω Power MOSFET

The UCC39151 Programmable Hot Swap Power Manager provides com-

plete power management, hot swap capability, and circuit breaker func-

tions. The only external component required to operate the device, other

• 7V to 15V Operation

than power supply bypassing, is the fault timing capacitor, C . All control

• Digital Programmable Current Limit

from 0A to 3A

and housekeeping functions are integrated, and externally programmable.

These include the fault current level, maximum output sourcing current,

maximum fault time, and startup delay. In the event of a constant fault, the

Internal fixed 2% duty cycle ratio limits average output power.

• Programmable ON Time

• Programmable Start Delay

• Fixed 2% Duty Cycle

• Thermal Shutdown

The internal 4 bit DAC allows programming of the fault level current from

0A to 3A with 0.25A resolution. The IMAX control pin sets the maximum

sourcing current to 1A above the trip level or to a full 4A of output current

for fast output capacitor charging.

• Fault Output Indicator

When the output current is below the fault level, the output MOSFET is

switched ON with a nominal ON resistance of 0.15Ω. When the output cur-

rent exceeds the fault level, but is less than the maximum sourcing level,

the output remains switched ON, but the fault timer starts, charging CT.

Once CT charges to a preset threshold, the switch is turned OFF, and re-

mains OFF for 50 times the programmed fault time. When the output cur-

rent reaches the maximum sourcing level, the MOSFET transitions from a

switch to a constant current source.

• Maximum Output Current can be set

to 1A above the Programmed Fault

Level or to a full 4A

• Power SOIC and TSSOP, Low

Thermal Resistance Packaging

(continued)

BLOCK DIAGRAM

Note: Pin numbers refer to DIL-16 and SOIC-16 packages.

UDG-94136-3

02/99

12 3 4 5 6

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