參數(shù)資料
型號: TPS5120QDBTRQ1
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: 1.5 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO30
封裝: PLASTIC, SM8-30
文件頁數(shù): 9/21頁
文件大?。?/td> 320K
代理商: TPS5120QDBTRQ1
TPS5120Q1
DUAL OUTPUT, TWOPHASE SYNCHRONOUS BUCK DC/DC CONTROLLER
SGLS225B JANUARY 2004 REVISED APRIL 2008
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 26
OSCILLATOR FREQUENCY
vs
CAPACITANCE
10
100
1000
0
50
100
150
200
250
CT Capacitance pF
f OSC
Oscillator
Frequency
kHz
VCC = 7 V,
TJ = 25 °C
Figure 27
OUTPUT MAXIMUM DUTY CYCLE
vs
JUNCTION TEMPERATURE
81.0
81.5
82.0
82.5
83.0
83.5
84.0
84.5
85.0
50
0
50
100
150
Output
Maximum
Duty
Cycle
%
VCC = 7 V,
VCC = 28 V
VCC = 4.5 V
TJ Junction Temperature °C
fosc = 300 kHz
Figure 28
SCP DELAY TIME
vs
CAPACITANCE
1
10
100
1 k
10 k
100 k
10
100
1 k
10 k
100 k
SCP Capacitance pF
SCP
Delay
T
ime
(OVP)
s
t d(SCP)
Figure 29
SOFTSTART TIME
vs
SOFTSTART CAPACITANCE
10
100
1 k
10 k
100 k
100
1 k
10 k
100 k
Softstart Capacitance pF
t
Softstart
T
ime
s
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