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參數(shù)資料
| 型號： | DCT104803P |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 440 kHz SWITCHING FREQ-MAX, PDIP22 |
| 封裝： | PLASTIC, DIP-28 |
| 文件頁數(shù)： | 5/11頁 |
| 文件大小： | 154K |
| 代理商： | DCT104803P |
DCT104803
DCT104805
SLVS407 – OCTOBER 2001
3
www.ti.com
electrical characteristics, TA = 25°C, VI = 48 VDC, VO set to nominal output voltage, Load = 2A
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI
Input voltage range
32
75
V
Line regulation
VI = 32 V–75 V,
Relative to VI = 48 V,
See Figure 1
±0.2
±0.5
%VO
Under voltage lockout
See Figure 1
28
V
Input current during remote shutdown
VI = 75 V,
See Figure 1
3.5
mA
Vref
Reference voltage
See output voltage programming section
1.223
1.238
1.252
V
Nominal output voltage
DCT104803
See Figure 1
3.3
V
Nominal output voltage
DCT104805
See Figure 1
5
V
Output voltage trim range
DCT104803,
VI = 40 V–60 V, Tested at nominal output volts,
See Figure 1
–10%
10%
Output voltage trim range
DCT104803,
DCT104805
VI = 32 V–75 V, Tested at nominal output
volts, See Figure 1
–2%
2%
Load regulation
IO = 10% to 100% Imax, relative to 50% Imax
±0.5
±1
%VO
IO
Output current
0.2
2
A
Output power
DCT104803
6.6
W
Output power
DCT104805
10
W
Output ripple and noise
IO = 100% Imax, See Note 1 and Figure 1
50
mVpp
Output voltage temperature coefficient
Relative to 25
°C, See Figure 1
±0.02
%/C
Transient response
IO = 50 to 75% Imax, See Figure 1
5
%VO
Transient recovery
(Time to within 1% of nominal volts)
IO = 50 to 75% Imax, See Figure 1
250
s
VOS
Start-up overshoot
See Figure 1
5
%VO
Start-up time
(Time to within 1% of nominal volts)
See Figure 1
TBD
S
Efficiency
DCT104803
IO = 75% Imax at nominal output voltage,
76%
Efficiency
DCT104805
IO = 75% Imax at nominal out ut voltage,
thermal steady state, See Figure 1
80%
Maximum output short circuit duration
See
Note 3
S
V
Remote shutdown on logic low input
See Note 2
03
08
V
VIL
Remote shutdown on logic low in ut
voltage
See Note 2
–0.3
0.8
V
Logic low pullup current
Tested at VIL= 0.8 V
–1300
–640
–200
A
Operating temperature
–40
85
°C
Tstg
Storage temperature
–40
125
°C
Switching frequency
440
kHz
Assured by design.
NOTES:
1. Measurement made using tip and barrel technique, decoupled with a 100-nF ceramic capacitor. Bandwidth of oscilloscope limited
to 20 MHz.
2. Remote shutdown (RSD) pin is active low. See application section for more information.
3. Continuous
PR
O
DU
C
T
PREVIEW
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