ACT5880 datasheet(49/87 Pages) ACTIVE-SEMI

49 / 87 page

ACT5880

Rev 2, 03-Sep-13

- 49 -

www.active-semi.com

ActivePMU

TM and ActivePathTM are trademarks of Active-Semi.

I2CTM is a trademark of NXP.

Active-Semi Confidential―Do Not Copy or Distribute

LOW-NOISE LDO ELECTRICAL CHARACTERISTICS

(VINL = 3.6V, TA = 25°C, unless otherwise specified.)

Note: See the TYPICAL PERFORMANCE CHARACTERISTICS for:

The REG4 Start up Waveform, No Load; The REG4 Start up Waveform, Full Load;

The REG4 voltage step transition response; The REG4 Load Transition Response.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Operating Voltage Range

VINL

2.4

Output Programming Range

0.6

3.9

Output Voltage Accuracy

LOWIQ[ ]=0

TA = 25°C

-1.5

+1.5

TA = -40°C to 85°C

-2.5

+2.5

Line Regulation

VINL = (VOUT + 0.5V) to 5.5V

%/V

Load Regulation

Load=1mA to maximum load current.

0.03

%/A

Power Supply Rejection Ratio

(PSRR)

COUT=1μF,

Load=20mA,

VOUT=1.8V, REG5,

REG6, REG9,

REG10, REG11,

REG12,REG13

At 1kHz, LOWIQ[ ]=Any

-80

At 10kHz.

LOWIQ[ ]=0

-70

LOWIQ[ ]=1

-60

Maximum Load Current

REG4, REG6, REG7, REG8

0.36

REG5, REG9, REG12

0.25

REG10, REG13

0.15

REG11

0.08

Current Limit

When 5% Voltage

drop is seen from

the normal output

voltage.

REG4, REG6, REG7, REG8

0.41

0.68

REG5, REG9, REG12

0.28

0.47

REG10, REG13

0.17

0.28

REG11

0.09

0.15

0.22

Dropout Voltage

Set load current to 1/4 of max output current;

Ramp down input supply until VOUT=VSET - 100mV.

140

Output Noise

REG5, REG6, REG9, REG10, REG11, REG12,

REG13, COUT=1μF, Load=20mA, VOUT=1.8V,

LOWIQ[ ]=0

µVRMS

Turn-On Propagation Delay

From the I2C last bit latched or PWRHLD, ON6 or

ON9 set 1 to output changes.

150

μs

Soft-Start Ramp Time

Time between 2 intersection points of the ramp

slope and 2 voltages; 0% and 100% of the final,

no and full load.

150

OK Threshold to Normal Ratio OK[ ] asserts 0

Current Limit Fold-Back Ratio Ratio to the current limit, when output short circuit.

Discharge Resistance

LDO Disabled, DIS[ ] = 1

1.5

kΩ

Stable COUT Range

REG4, REG6, REG7, REG8

3.3

μF

REG5, REG9, REG12

2.2

REG10, REG13

1.5

REG11

No Load Current

LOWIQ[ ]=0

LOWIQ[ ]=1

Shutdown Current

μA

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