LM2585 datasheet(4/32 Pages) TI

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LM2585

SNVS120F – APRIL 2000 – REVISED APRIL 2013

www.ti.com

LM2585-12

Symbol

Parameters

Conditions

Typical

Min

Max

Units

SYSTEM PARAMETERS Test Circuit of Figure 20 (1)

VOUT

Output Voltage

VIN = 4V to 10V

12.0

11.52/11.40

12.48/12.60

ILOAD = 0.2A to 0.8A

ΔVOUT/

Line Regulation

VIN = 4V to 10V

100/200

ΔVIN

ILOAD = 0.2A

ΔVOUT/

Load Regulation

VIN = 10V

100/200

ΔILOAD

ILOAD = 0.2A to 0.8A

Efficiency

VIN = 10V, ILOAD = 0.6A

UNIQUE DEVICE PARAMETERS(2)

VREF

Output Reference

Measured at Feedback Pin

12.0

11.79/11.76

12.21/12.24

Voltage

VCOMP = 1.0V

ΔVREF

Reference Voltage

VIN = 4V to 40V

7.8

Line Regulation

Error Amp

ICOMP = −30 μA to +30 μA

0.328

0.186

0.621

mmho

Transconductance

VCOMP = 1.0V

AVOL

Error Amp

VCOMP = 0.5V to 1.6V

41/21

V/V

Voltage 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

LM2585 is used as shown in Figure 19 and Figure 20, 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.

LM2585-ADJ

Symbol

Parameters

Conditions

Typical

Min

Max

Units

SYSTEM PARAMETERS Test Circuit of Figure 20 (1)

VOUT

Output Voltage

VIN = 4V to 10V

12.0

11.52/11.40

12.48/12.60

ILOAD = 0.2A to 0.8A

ΔVOUT/

Line Regulation

VIN = 4V to 10V

100/200

ΔVIN

ILOAD = 0.2A

ΔVOUT/

Load Regulation

VIN = 10V

100/200

ΔILOAD

ILOAD = 0.2A to 0.8A

Efficiency

VIN = 10V, ILOAD = 0.6A

UNIQUE DEVICE PARAMETERS(2)

VREF

Output Reference

Measured at Feedback Pin

1.230

1.208/1.205

1.252/1.255

Voltage

VCOMP = 1.0V

ΔVREF

Reference Voltage

VIN = 4V to 40V

1.5

Line Regulation

Error Amp

ICOMP = −30 μA to +30 μA

3.200

1.800

6.000

mmho

Transconductance

VCOMP = 1.0V

AVOL

Error Amp

VCOMP = 0.5V to 1.6V

670

400/200

V/V

Voltage Gain

RCOMP = 1.0 MΩ

(3)

Error Amp

VCOMP = 1.0V

125

425/600

Input Bias Current

(1)

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

LM2585 is used as shown in Figure 19 and Figure 20, 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.

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