TPS65021 datasheet(5/45 Pages) TI

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ELECTRICAL CHARACTERISTICS

TPS65021

SLVS613 – OCTOBER 2005

VINDCDC1 = VINDCDC2 = VINDCDC3 = VCC = VINLDO = 3.6 V, VBACKUP = 3 V, T

A = –40°C to 85°C, typical values are

at T

A = 25°C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SUPPLY PINS: VBACKUP, VSYSIN, VRTC

VBACKUP = 3 V, VSYSIN = 0 V;

I(q)

Operating quiescent current

µA

VCC = 2.6 V, current into VBACKUP

VBACKUP < V_VBACKUP, current into

I(SD)

Operating quiescent current

µA

VBACKUP

VRTC LDO output voltage

VSYSIN = VBACKUP = 0 V, IO = 0 mA

Output current for VRTC

VSYSIN < 2.57 V and VBACKUP < 2.57 V

VRTC short-circuit current limit

VRTC = GND; VSYSIN = VBACKUP = 0 V

100

Maximum output current at VRTC for

VRTC > 2.6 V, VCC = 3 V;

RESPWRON = 1

VSYSIN = VBACKUP = 0 V

Output voltage accuracy for VRTC

VSYSIN = VBACKUP = 0 V; Io = 0 mA

-1%

Line regulation for VRTC

VCC = VRTC + 0.5 V to 6.5 V, IO = 5 mA

-1%

IO = 1 mA to 30 mA;

Load regulation VRTC

-3%

VSYSIN = VBACKUP = 0 V

Regulation time for VRTC

Load change from 10% to 90%

µs

Ilkg

Input leakage current at VSYSIN

VSYSIN < V_VSYSIN

µA

rDS(on) of VSYSIN switch

12.5

Ω

rDS(on) of VBACKUP switch

12.5

Ω

Input voltage range at VBACKUP(1)

2.73

3.75

Input voltage range at VSYSIN(1)

2.73

3.75

VSYSIN threshold

VSYSIN falling

–3%

2.55

VSYSIN threshold

VSYSIN rising

–3%

2.65

VBACKUP threshold

VBACKUP falling

–3%

2.55

VBACKUP threshold

VBACKUP falling

–3%

2.65

SUPPLY PIN: VINLDO

I(q)

Operating quiescent current

Current per LDO into VINLDO

µA

Total current for both LDOs into VINLDO,

I(SD)

Shutdown current

0.1

µA

VLDO = 0 V

(1)

Based on the requirements for the Intel PXA270 processor.

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