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LNLDO

BCM4354 Data Sheet

BROADCOM CONFIDENTIAL

Broadcom®

October 15, 2014 • 4354-DS109-R

Page 163

LNLDO

Table 48: LNLDO Specifications

Specification

Notes

Min.

Typ.

Max.

Units

Input supply voltage, Vin

Min. = 1.2Vo + 0.15V = 1.35V dropout

voltage requirement must be met under

maximum load.

1.3

1.35

1.5

Output Current

–

0.1

–

150

Output Voltage, Vo

Programmable in 25 mV steps.

Default = 1.2V

1.1

1.2

1.275

Dropout Voltage

At maximum load

–

150

Output Voltage DC Accuracy Includes line/load regulation

–4

–

Quiescent current

No load

–

µA

Max. load

–

970

990

µA

Line Regulation

Vin from (Vo + 0.1V) to 1.5V, max. load

–

mV/V

Load Regulation

Load from 1 mA to 150 mA

–

0.02

0.05

mV/mA

Leakage Current

Power-down

–

µA

Output Noise

@30 kHz, 60–150 mA load Co = 2.2 µF

@100 kHz, 60–150 mA load Co = 2.2 µF

–

nV/rt Hz

PSRR

@ 1kHz, Input > 1.35V, Co= 2.2 µF, Vo =

1.2V

–

LDO Turn-on Time

LDO turn-on time when rest of chip is up

–

140

180

µs

External Output Capacitor,

Total ESR (trace/capacitor):

5 mΩ–240 mΩ

0.5a

a. Minimum capacitor value refers to the residual capacitor value after taking into account the part–to–part

tolerance, DC–bias, temperature, and aging.

2.2

4.7

µF

External Input Capacitor

Only use an external input capacitor at the

VDD_LDO pin if it is not supplied from

CBUCK output.

Total ESR (trace/capacitor): 30 mΩ–200 mΩ

–

2.2

µF

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