參數(shù)資料
型號(hào)： TL2575-12I
廠商： Texas Instruments, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
中文描述： 1，一個(gè)簡單的步驟式開關(guān)穩(wěn)壓器
文件頁數(shù)： 7/28頁
文件大小： 916K
代理商： TL2575-12I
www.ti.com
TL2575HV Electrical Characteristics
I
LOAD
= 200 mA, V
IN
= 12 V for 3.3-V, 5-V, and adjustable versions, V
IN
= 25 V for 12-V version, V
IN
= 30 V for 15-V version
(unless otherwise noted) (see
Figure 2
)
TL2575, TL2575HV
1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B–MAY 2006–REVISED JANUARY 2007
TL2575HV
PARAMETER
TEST CONDITIONS
T
J
UNIT
MIN
3.234
3.168
3.135
4.9
4.8
4.75
11.76
11.52
11.4
14.7
14.4
14.25
TYP
3.3
3.3
MAX
3.366
3.450
3.482
5.1
5.225
5.275
12.24
12.54
12.66
15.3
15.68
15.83
V
IN
= 12 V, I
LOAD
= 0.2 A
25
°
C
25
°
C
TL2575HV-33
4.75 V
≤
V
IN
≤
60 V,
0.2 A
≤
I
LOAD
≤
1 A
Full range
25
°
C
25
°
C
Full range
25
°
C
25
°
C
Full range
25
°
C
25
°
C
Full range
V
IN
= 12 V, I
LOAD
= 0.2 A
5
5
TL2575HV-05
8 V
≤
V
IN
≤
60 V,
0.2 A
≤
I
LOAD
≤
1 A
V
OUT
Output voltage
V
V
IN
= 25 V, I
LOAD
= 0.2 A
12
12
TL2575HV-12
15 V
≤
V
IN
≤
60 V,
0.2 A
≤
I
LOAD
≤
1 A
V
IN
= 30 V, I
LOAD
= 0.2 A
15
15
15
TL2575HV-15
18 V
≤
V
IN
≤
60 V,
0.2 A
≤
I
LOAD
≤
1 A
V
IN
= 12 V, V
OUT
= 5 V,
I
LOAD
= 0.2 A
25
°
C
1.217
1.23
1.243
Feedback voltage
TL2575HV-ADJ
V
25
°
C
1.193
1.180
1.23
1.273
1.286
8 V
≤
V
IN
≤
60 V, V
OUT
= 5 V,
0.2 A
≤
I
LOAD
≤
1 A
Full range
TL2575HV-33
TL2575HV-05
TL2575HV-12
TL2575HV-15
V
IN
= 12 V, I
LOAD
= 1 A
V
IN
= 12 V, I
LOAD
= 1 A
V
IN
= 15 V, I
LOAD
= 1 A
V
IN
= 18 V, I
LOAD
= 1 A
V
IN
= 12 V, V
OUT
= 5 V,
I
LOAD
= 1 A
75
77
88
88
η
Efficiency
25
°
C
%
TL2575HV-ADJ
77
25
°
C
50
100
500
58
63
1.2
1.4
I
IB
Feedback bias current
V
OUT
= 5 V (ADJ version only)
nA
Full range
25
°
C
Full range
25
°
C
Full range
25
°
C
25
°
C
Full range
47
42
52
f
o
Oscillator frequency
(1)
kHz
0.9
V
SAT
Saturation voltage
I
OUT
= 1 A
(2)
V
Maximum duty cycle
(3)
93
1.7
1.3
98
2.8
%
3.6
I
CL
Switch peak current
(1)(2)
A
4
2
V
IN
= 60
(4)
, Output = 0 V
V
IN
= 60
(4)
, Output = –1 V
I
L
Output leakage current
25
°
C
mA
7.5
30
10
I
Q
I
STBY
Quiescent current
(4)
Standby quiescent current
25
°
C
25
°
C
5
mA
μ
A
OFF (ON/OFF = 5 V)
50
200
(1)
In the event of an output short or an overload condition, self-protection features lower the oscillator frequency to
～
18 kHz and the
minimum duty cycle from 5% to
～
2%. The resulting output voltage drops to
～
40% of its nominal value, causing the average power
dissipated by the IC to lower.
Output is not connected to diode, inductor, or capacitor. Output is sourcing current.
FEEDBACK is disconnected from output and connected to 0 V.
To force the output transistor off, FEEDBACK is disconnected from output and connected to 12 V for the adjustable, 3.3-V, and 5-V
versions and to 25 V for the 12-V and 15-V versions.
(2)
(3)
(4)
7
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