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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, 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
PARAMETER TEST CONDITIONS T
J
UNIT
MIN TYP MAX
V
IN
= 12 V, I
LOAD
= 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
V
IN
= 12 V, I
LOAD
= 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
V
OUT
Output voltage V
V
IN
= 25 V, I
LOAD
= 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
V
IN
= 30 V, I
LOAD
= 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
V
IN
= 12 V, V
OUT
= 5 V,
25 ° C 1.217 1.23 1.243
I
LOAD
= 0.2 A
Feedback voltage TL2575-ADJ V
25 ° C 1.193 1.23 1.267
8 V ≤ V
IN
≤ 40 V, V
OUT
= 5 V,
0.2 A ≤ I
LOAD
≤ 1 A
Full range 1.18 1.28
TL2575-33 V
IN
= 12 V, I
LOAD
= 1 A 75
TL2575-05 V
IN
= 12 V, I
LOAD
= 1 A 77
TL2575-12 V
IN
= 15 V, I
LOAD
= 1 A 88
η Efficiency 25 ° C %
TL2575-15 V
IN
= 18 V, I
LOAD
= 1 A 88
V
IN
= 12 V, V
OUT
= 5 V,
TL2575-ADJ 77
I
LOAD
= 1 A
25 ° C 50 100
I
IB
Feedback bias current V
OUT
= 5 V (ADJ version only) nA
Full range 500
25 ° C 47 52 58
f
o
Oscillator frequency
(1)
kHz
Full range 42 63
25 ° C 0.9 1.2
V
SAT
Saturation voltage I
OUT
= 1 A
(2)
V
Full range 1.4
Maximum duty cycle
(3)
25 ° C 93 98 %
25 ° C 1.7 2.8 3.6
I
CL
Switch peak current
(1) (2)
A
Full range 1.3 4
V
IN
= 40
(4)
, Output = 0 V 2
I
L
Output leakage current 25 ° C mA
V
IN
= 40
(4)
, Output = –1 V 7.5 30
I
Q
Quiescent current
(4)
25 ° C 5 10 mA
I
STBY
Standby quiescent current OFF ( ON/OFF = 5 V) 25 ° C 50 200 µ A
(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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