TL2575 datasheet(7/31 Pages) TI

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TL2575HV Electrical Characteristics

TL2575, TL2575HV

1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS

SLVS638B – MAY 2006 – REVISED JANUARY 2007

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)

TL2575HV

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

VIN = 12 V, ILOAD = 0.2 A

°C

3.234

3.3

3.366

TL2575HV-33

°C

3.168

3.3

3.450

4.75 V

≤ V

IN ≤ 60 V,

0.2 A

≤ I

LOAD ≤ 1 A

Full range

3.135

3.482

VIN = 12 V, ILOAD = 0.2 A

°C

4.9

5.1

TL2575HV-05

°C

4.8

5.225

8 V

≤ V

IN ≤ 60 V,

0.2 A

≤ I

LOAD ≤ 1 A

Full range

4.75

5.275

VOUT

Output voltage

VIN = 25 V, ILOAD = 0.2 A

°C

11.76

12.24

TL2575HV-12

°C

11.52

12.54

15 V

≤ V

IN ≤ 60 V,

0.2 A

≤ I

LOAD ≤ 1 A

Full range

11.4

12.66

VIN = 30 V, ILOAD = 0.2 A

°C

14.7

15.3

TL2575HV-15

°C

14.4

15.68

18 V

≤ V

IN ≤ 60 V,

0.2 A

≤ I

LOAD ≤ 1 A

Full range

14.25

15.83

VIN = 12 V, VOUT = 5 V,

°C

1.217

1.23

1.243

ILOAD = 0.2 A

Feedback voltage

TL2575HV-ADJ

°C

1.193

1.23

1.273

8 V

≤ V

IN ≤ 60 V, VOUT = 5 V,

0.2 A

≤ I

LOAD ≤ 1 A

Full range

1.180

1.286

TL2575HV-33

VIN = 12 V, ILOAD = 1 A

TL2575HV-05

VIN = 12 V, ILOAD = 1 A

TL2575HV-12

VIN = 15 V, ILOAD = 1 A

Efficiency

°C

TL2575HV-15

VIN = 18 V, ILOAD = 1 A

VIN = 12 V, VOUT = 5 V,

TL2575HV-ADJ

ILOAD = 1 A

°C

100

IIB

Feedback bias current

VOUT = 5 V (ADJ version only)

Full range

500

°C

Oscillator frequency(1)

kHz

Full range

°C

0.9

1.2

VSAT

Saturation voltage

IOUT = 1 A(2)

Full range

1.4

Maximum duty cycle(3)

°C

1.7

2.8

3.6

ICL

Switch peak current(1)(2)

Full range

1.3

VIN = 60(4), Output = 0 V

Output leakage current

°C

VIN = 60(4), Output = –1 V

7.5

Quiescent current(4)

°C

ISTBY

Standby quiescent current

OFF (ON/OFF = 5 V)

°C

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.

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