LM3524DM datasheet(3/29 Pages) TI

3 / 29 page

LM2524D, LM3524D

www.ti.com

SNVS766E – JUNE 2009 – REVISED MAY 2013

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

Absolute Maximum Ratings

(1) (2)

Supply Voltage

40V

Collector Supply Voltage

LM2524D

55V

LM3524D

40V

Output Current DC (each)

200 mA

Oscillator Charging Current (Pin 7)

5 mA

Internal Power Dissipation

Operating Junction Temperature Range (3)

LM2524D

−40°C to +125°C

LM3524D

0°C to +125°C

Maximum Junction Temperature

150°

Storage Temperature Range

−65°C to +150°C

Lead Temperature (Soldering 4 sec.)

NFG, D Pkg.

260°C

(1)

Absolute maximum ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not

apply when operating the device beyond its rated operating conditions.

(2)

If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and

specifications.

(3)

For operation at elevated temperatures, devices in the NFG package must be derated based on a thermal resistance of 86°C/W,

junction to ambient. Devices in the D package must be derated at 125°C/W, junction to ambient.

Electrical Characteristics

(1)

Symbol

Parameter

Conditions

LM2524D

LM3524D

Units

Typ

Tested

Design

Typ

Tested

Design

Limit(2)

Limit(3)

Limit(2)

Limit(3)

REFERENCE SECTION

VREF

Output Voltage

4.85

4.80

4.75

VMin

5.15

5.20

5.25

VMax

VRLine

Line Regulation

VIN = 8V to 40V

mVMax

VRLoad

Load Regulation

IL = 0 mA to 20 mA

mVMax

ΔVIN/ΔVREF

Ripple Rejection

f = 120 Hz

IOS

Short Circuit Current

VREF = 0

mA Min

180

200

mA Max

Output Noise

10 Hz

≤ f ≤ 10 kHz

100

μVrms

Max

Long Term Stability

TA = 125°C

mV/kHr

OSCILLATOR SECTION

fOSC

Max. Freq.

RT = 1k, CT = 0.001 μF

(4)

550

500

350

kHzMin

fOSC

Initial Accuracy

RT = 5.6k, CT = 0.01 μF

(4)

17.5

kHzMin

22.5

kHzMax

RT = 2.7k, CT = 0.01 μF

(4)

kHzMin

kHzMax

(1)

Unless otherwise stated, these specifications apply for TA = TJ = 25°C. Boldface numbers apply over the rated temperature range:

LM2524D is

−40° to 85°C and LM3524D is 0°C to 70°C. VIN = 20V and fOSC = 20 kHz.

(2)

Tested limits are ensured and 100% tested in production.

(3)

Design limits are ensured (but not 100% production tested) over the indicated temperature and supply voltage range. These limits are

not used to calculate outgoing quality level.

(4)

The value of a Ct capacitor can vary with frequency. Careful selection of this capacitor must be made for high frequency operation.

Polystyrene was used in this test. NPO ceramic or polypropylene can also be used.

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