LMZ12010

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SNVS667F – FEBRUARY 2010 – REVISED MARCH 2013

Electrical Characteristics

to +125°C. Minimum and Maximum limits are ensured through test, design or statistical correlation. Typical values represent

Min

Typ

Max

Symbol

Parameter

Conditions

Units

(1)

(2)

(1)

SYSTEM PARAMETERS

Enable Control

EN threshold

1.096

1.274

1.452

V

EN hysteresis source current

13

µA

Soft-Start

SS source current

40

50

60

µA

Internal soft-start interval

1.6

msec

Current Limit

Current limit threshold

d.c. average

12.5

A

Internal Switching Oscillator

Free-running oscillator frequency

314

359

404

kHz

Regulation and Over-Voltage Comparator

In-regulation feedback voltage

0.775

0.795

0.815

V

Feedback over-voltage protection

0.86

V

threshold

Feedback input bias current

5

nA

Non Switching Quiescent Current

3

mA

Shut Down Quiescent Current

32

μA

Maximum Duty Factor

85

%

Thermal Characteristics

Thermal Shutdown

Rising

165

°C

Thermal shutdown hysteresis

Falling

15

°C

Natural Convection

9.9

°C/W

225 LFPM

6.8

500 LFPM

5.2

Junction to Case

1.0

°C/W

Output voltage ripple

BW@ 20 MHz

24

Line regulation

±0.2

%

Load regulation

1

mV/A

η

Peak efficiency

89.5

%

η

Full load efficiency

87.5

%

(1)

Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlation

using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).

(2)

Typical numbers are at 25°C and represent the most likely parametric norm.

(3)

hundred and ten 12 mil thermal vias, and 2W power dissipation. Refer to evaluation board application note layout diagrams.

(4)

Refer to BOM in Typical Application Bill of Materials.

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