MAS6251 datasheet(5/21 Pages) MAS

5 / 21 page

DA6251.002

27 October, 2017

5 (21)

ELECTRICAL CHARACTERISTICS

TA = -40°C to +85°C, typical values at TA = 27°C, VIN = 3.0 V, L = 2.2 H, CIN = 10 F, COUT = 100 nF, CLOAD = 15 nF, fPIEZO = 3.8 kHz;

unless otherwise specified

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Boost DC/DC Converter

Switch ON-Resistance

RDS(ON)_LS

Low side switch

VIN=3V, VOUT=15V, TA = 27°C

0.55

1.0



RDS(ON)_HS

High side switch

VIN=3V, VOUT=15V, TA = 27°C

1.1

2.5

DC/DC Converter

Startup-Up Time

tSTART-UP

VOUT=10V (R2/R1=24)

VIN=3.0V

VIN=1.2V

200

340

µs

Output Rise/Fall Time

tSLEW

VIN=3V, VOUT=10V (R2/R1=24)

VOB: CLOAD=15nF

VOB-VOS: CLOAD=15nF

VOB: CLOAD=75nF, COUT=470nF

VOB-VOS: CLOAD=75nF, COUT=470nF

100

µs

Shutdown Delay

tOFF

Time before device off mode after both

DIN and CTRL have gone to LOW

Control Input Threshold

VIH

DIN and CTRL pins. Note 1

0.9

VIL

DIN and CTRL pins

0.4

Control Input Current

IIH

DIN, CTRL = 3V

DIN, CTRL = 0.4V. Note 2

0.01

µA

IIL

DIN, CTRL = 0V

0.01

µA

Note 1: Control inputs can be driven even from low supply voltage controller due to low 0.9V VIH min threshold.

Note 2: DIN and CTRL pins have active pull-down by 400k

Ω which disabled to save current when inputs are pulled high.

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