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UCC2915N

更新时间： 2024-10-01 23:39:03
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其他 - ETC /
页数 文件大小 规格书
8页 141K
描述
Power Control/Management

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UCC2915N 数据手册

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SLUS198B – FEBUARY 2000 - REVISED - DECEMBER 2000  
D
Integrated 0.15-Ω Power MOSFET  
D
D
D
Thermal Shutdown  
D
D
7-V to 15-V Operation  
Fault-Output Indicator  
Digital-Programmable Current Limit from  
0 A to 3 A  
Maximum-Output Current Can Be Set to 1 A  
Above the Programmed-Fault Level or to a  
Full 4 A  
D
D
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D
100-µA I  
When Disabled  
CC  
D
Power SOIC and TSSOP, Low Thermal  
Resistance Packaging  
Programmable On Time  
Programmable Start Delay  
Fixed 2% Duty Cycle  
description  
The UCC3915 programmable hot swap power manager provides complete power-management, hot-swap  
capability, and circuit breaker functions. The only external component required to operate the device, other than  
power supply bypassing, is the fault-timing capacitor, C . All control and housekeeping functions are integrated,  
T
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.  
The internal 4-bit DAC allows programming of the fault-level current from 0 A to 3 A with 0.25-A resolution. The  
IMAX control pin sets the maximum-sourcing current to 1 A above the trip level or to a full 4 A of output current  
for fast output capacitor charging. (continued)  
block diagram  
2
3
VIN  
VIN  
REVERSE VOLTAGE  
COMPARATOR  
–
30 mV  
CHARGE  
PUMP  
H = 4 A  
IMAX 10  
+
V
OUT  
MAX  
CURRENT  
LEVEL  
CURRENT SENSE  
H = OPEN  
4 A  
+
–
POWER  
FET *  
LINEAR CURRENT  
AMPLIFIER  
1 A  
ABOVE  
FAULT  
14 VOUT  
15 VOUT  
OVER CURRENT  
COMPARATOR  
ON TIME  
CONTROL  
CURRENT FAULT  
LEVEL 0–3 A  
+
–
2% DUTY  
CYCLE  
THERMAL  
SHUTDOWN  
1.5 V  
0–3 A  
+
–
0.25  
RES  
INTERNAL  
BIAS  
1
SHTDWN  
6
7
8
9
5
4
13  
12  
11  
16  
HEAT SINK  
GND PINS  
B3  
B2  
B1  
B0  
GND  
CT  
FAULT  
4 BIT DAC  
UDG-99174  
NOTE: Pin numbers refer to DIL-16 and SOIC-16 packages.  
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.  
Copyright 2000, Texas Instruments Incorporated  
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
12345678

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