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UCC3919D Datasheet

  • UCC3919D

  • Power Control/Management

  • 255.63KB

  • 18頁

  • ETC

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UCC2919
UCC3919
SLUS374A 鈥?JULY 1999 鈥?REVISED JULY 2001
3 V TO 8 V HOT SWAP POWER MANAGER
FEATURES
D
Precision Fault Threshold
D
Charge Pump for Low R
DS(on
) High Side Drive
D
Differential Sense Inputs
D
Programmable Average Power Limiting
D
Programmable Linear Current Control
D
Programmable Fault Time
D
Fault Output Indicator
D
Manual and Automatic Reset Modes
D
Shutdown Control With Programmable
D
D
Softstart
Undervoltage Lockout
Electronic Circuit Breaker Function
DESCRIPTION
The UCC3919 family of hot swap power managers
provide complete power management, hot swap, and
fault handling capability. The UCC3919 features a duty
ratio current limiting technique, which provides peak
load capability while limiting the average power
dissipation of the external pass transistor during fault
conditions. The UCC3919 has two reset modes,
selected with the TTL/CMOS compatible L/R pin. In one
mode, when a fault occurs the IC repeatedly tries to
reset itself at a user defined rate, with user defined
maximum output current and pass transistor power
dissipation. In the other mode the output latches off and
stays off until either the L/R pin is reset or the shutdown
pin is toggled. The on board charge pump circuit
provides the necessary gate voltage for an external
N-channel power FET.
TYPICAL APPLICATION DIAGRAM
RS
VDD
CSN
GATE
LINEAR
CURRENT AMP
IMAX
FROM
SUPPLY
3 V TO 8 V
+
TO LOAD
IBIAS
TIMER
CT
CAP
GND
UDG鈥?1068
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
錚?/div>
2001, Texas Instruments Incorporated
www.ti.com
1

UCC3919D 產(chǎn)品屬性

  • 40

  • 集成電路 (IC)

  • PMIC - 熱交換

  • -

  • 熱交換控制器

  • 通用

  • 無

  • -

  • 3 V ~ 8 V

  • 0°C ~ 70°C

  • 表面貼裝

  • 16-SOIC（0.154"，3.90mm 寬）

  • 16-SOIC N

  • 管件

  • 296-2339-5

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