LM2588T-ADJ datasheet(6/38 Pages) TI1

No de pièce	LM2588T-ADJ

Description	SIMPLE SWITCHER 5A Flyback Regulator with Shutdown

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LM2588

SNVS117D – APRIL 1998 – REVISED APRIL 2013

www.ti.com

LM2588-12 Electrical Characteristics

Specifications with standard type face are for TJ = 25°C, and those in bold type face apply over full Operating Temperature

Range. Unless otherwise specified, VIN = 5V.

Symbol

Parameters

Conditions

Typical

Min

Max

Units

SYSTEM PARAMETERS Test Circuit of Figure 19(1)

VOUT

Output Voltage

VIN = 4V to 10V

12.0

11.52/11.40

12.48/12.60

V

ILOAD = 300 mA to 1.2A

ΔVOUT/

Line Regulation

VIN = 4V to 10V

20

100/200

mV

ΔVIN

ILOAD = 300 mA

ΔVOUT/

Load Regulation

VIN = 10V

20

100/200

mV

ΔILOAD

ILOAD = 300 mA to 1.2A

η

Efficiency

VIN = 10V, ILOAD = 1A

90

%

UNIQUE DEVICE PARAMETERS(2)

VREF

Output Reference

Measured at Feedback Pin

12.0

11.79/11.76

12.21/12.24

V

Voltage

VCOMP = 1.0V

ΔVREF

Reference Voltage Line VIN = 4V to 40V

7.8

mV

Regulation

GM

Error Amp

ICOMP = −30 μA to +30 μA

0.328

0.186

0.621

mmho

Transconductance

VCOMP = 1.0V

AVOL

Error Amp Voltage

VCOMP = 0.5V to 1.6V

70

41/21

V/V

Gain

RCOMP = 1.0 MΩ

(3)

(1)

External components such as the diode, inductor, input and output capacitors can affect switching regulator performance. When the

LM2588 is used as shown in Figure 18 and Figure 19, system performance will be as specified by the system parameters.

(2)

All room temperature limits are 100% production tested, and all limits at temperature extremes are specified via correlation using

standard Statistical Quality Control (SQC) methods.

(3)

A 1.0 M

Ω resistor is connected to the compensation pin (which is the error amplifier output) to ensure accuracy in measuring AVOL.

6

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