LMZ22010

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SNVS687H – MARCH 2011 – REVISED AUGUST 2015

6.5 Electrical Characteristics

Limits are for TJ = 25°C unless otherwise specified. Minimum and Maximum limits are ensured through test, design or

statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference

purposes only. Unless otherwise stated the following conditions apply: VIN = 12 V, VOUT = 3.3 V.

PARAMETER

TEST CONDITIONS

MIN(1)

TYP(2)

MAX(1)

UNIT

SYSTEM PARAMETERS

ENABLE CONTROL

1.274

VEN

EN threshold

VEN rising

V

over the junction temperature (TJ) range

1.096

1.452

of –40°C to +125°C

IEN-HYS

EN hysteresis source current

VEN > 1.274 V

13

µA

SOFT-START

50

ISS

SS source current

VSS = 0 V

µA

over the junction temperature (TJ) range

40

60

of –40°C to +125°C

tSS

Internal soft-start interval

1.6

ms

CURRENT LIMIT

ICL

Current limit threshold

DC average

12.5

A

INTERNAL SWITCHING OSCILLATOR

Free-running oscillator

fosc

Sync input connected to ground

314

359

404

kHz

frequency

fsync

Synchronization range

Vsync = 3.3 Vp-p

314

600

kHz

Synchronization logic zero

over the junction temperature (TJ) range

VIL-sync

Relative to AGND

0.4

V

amplitude

of –40°C to +125°C

Synchronization logic one

over the junction temperature (TJ) range

VIH-sync

Relative to AGND

1.8

V

amplitude

of –40°C to +125°C

Synchronization duty cycle

SyncDC

15%

50%

85%

range

REGULATION AND OVERVOLTAGE COMPARATOR

0.795

VSS >+ 0.8 V

VFB

In-regulation feedback voltage

V

over the junction temperature (TJ) range

IO = 10 A

0.775

0.815

of –40°C to +125°C

Feedback over-voltage

VFB-OV

0.86

V

protection threshold

IFB

Feedback input bias current

5

nA

Non-switching quiescent

IQ

SYNC = 3 V

3

mA

current

ISD

Shutdown quiescent current

VEN = 0 V

32

μA

Dmax

Maximum duty factor

85%

THERMAL CHARACTERISTICS

TSD

Thermal shutdown

Rising

165

°C

TSD-HYST

Thermal shutdown hysteresis

Falling

15

°C

PERFORMANCE PARAMETERS(3)

ΔVO

Output voltage ripple

BW at 20 MHz

24

mVPP

ΔVO/ΔVIN

Line regulation

VIN = 12 V to 20 V, IOUT= 10 A

±0.2%

ΔVO/ΔIOUT

Load regulation

VIN = 12 V, IOUT= 0.001 A to 10 A

1

mV/A

η

Peak efficiency

VIN = 12 V, VOUT = 3.3 V, IOUT = 5 A

89.5%

η

Full load efficiency

VIN = 12V, VOUT = 3.3 V, IOUT = 10 A

87.5%

(1)

Minimum and Maximum 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)

Refer to BOM in Table 1.

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