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TL2575_07 Datasheet(PDF) 5 Page - Texas Instruments

Part No. TL2575_07
Description  1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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TL2575 Electrical Characteristics
TL2575, TL2575HV
1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638B – MAY 2006 – REVISED JANUARY 2007
I
LOAD = 200 mA, VIN = 12 V for 3.3-V, 5-V, and adjustable versions, VIN = 25 V for 12-V version, VIN = 30 V for 15-V version
(unless otherwise noted) (see Figure 2)
TL2575
PARAMETER
TEST CONDITIONS
TJ
UNIT
MIN
TYP
MAX
VIN = 12 V, ILOAD = 0.2 A
25
°C
3.234
3.3
3.366
TL2575-33
25
°C
3.168
3.3
3.432
4.75 V
≤ V
IN ≤ 40 V,
0.2 A
≤ I
LOAD ≤ 1 A
Full range
3.135
3.465
VIN = 12 V, ILOAD = 0.2 A
25
°C
4.9
5
5.1
TL2575-05
25
°C
4.8
5
5.2
8 V
≤ V
IN ≤ 40 V,
0.2 A
≤ I
LOAD ≤ 1 A
Full range
4.75
5.25
VOUT
Output voltage
V
VIN = 25 V, ILOAD = 0.2 A
25
°C
11.76
12
12.24
TL2575-12
25
°C
11.52
12
12.48
15 V
≤ V
IN ≤ 40 V,
0.2 A
≤ I
LOAD ≤ 1 A
Full range
11.4
12.6
VIN = 30 V, ILOAD = 0.2 A
25
°C
14.7
15
15.3
TL2575-15
25
°C
14.4
15
15.6
18 V
≤ V
IN ≤ 40 V,
0.2 A
≤ I
LOAD ≤ 1 A
Full range
14.25
15
15.75
VIN = 12 V, VOUT = 5 V,
25
°C
1.217
1.23
1.243
ILOAD = 0.2 A
Feedback voltage
TL2575-ADJ
V
25
°C
1.193
1.23
1.267
8 V
≤ V
IN ≤ 40 V, VOUT = 5 V,
0.2 A
≤ I
LOAD ≤ 1 A
Full range
1.18
1.28
TL2575-33
VIN = 12 V, ILOAD = 1 A
75
TL2575-05
VIN = 12 V, ILOAD = 1 A
77
TL2575-12
VIN = 15 V, ILOAD = 1 A
88
η
Efficiency
25
°C
%
TL2575-15
VIN = 18 V, ILOAD = 1 A
88
VIN = 12 V, VOUT = 5 V,
TL2575-ADJ
77
ILOAD = 1 A
25
°C
50
100
IIB
Feedback bias current
VOUT = 5 V (ADJ version only)
nA
Full range
500
25
°C
47
52
58
fo
Oscillator frequency(1)
kHz
Full range
42
63
25
°C
0.9
1.2
VSAT
Saturation voltage
IOUT = 1 A(2)
V
Full range
1.4
Maximum duty cycle(3)
25
°C
93
98
%
25
°C
1.7
2.8
3.6
ICL
Switch peak current(1)(2)
A
Full range
1.3
4
VIN = 40(4), Output = 0 V
2
IL
Output leakage current
25
°C
mA
VIN = 40(4), Output = –1 V
7.5
30
IQ
Quiescent current(4)
25
°C
5
10
mA
ISTBY
Standby quiescent current
OFF (ON/OFF = 5 V)
25
°C
50
200
µA
(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.
(2)
Output is not connected to diode, inductor, or capacitor. Output is sourcing current.
(3)
FEEDBACK is disconnected from output and connected to 0 V.
(4)
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.
5
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