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2.5V LDO (BTLDO2P5)

BCM4354 Data Sheet

BROADCOM CONFIDENTIAL

Broadcom®

October 15, 2014 • 4354-DS109-R

Page 161

2.5V LDO (BTLDO2P5)

Table 46: BTLDO2P5 Specifications

Specification

Notes

Min.

Typ.

Max.

Units

Input supply voltage

Min. = 2.5V + 0.2V = 2.7V.

Dropout voltage requirement must be

met under maximum load for

performance specifications.

3.0

3.6

5.25a

a. The maximum continuous voltage is 5.25V. Voltages up to 6.0V for up to 10 seconds, cumulative duration, over

the lifetime of the device are allowed. Voltages as high as 5.5V for up to 250 seconds, cumulative duration, over

the lifetime of the device are allowed.

Nominal output voltage

Default = 2.5V.

–

2.5

–

Output voltage programmability

Range

2.2

2.5

2.8

Accuracy at any step (including line/

load regulation), load > 0.1 mA.

–5

–5%

Dropout voltage

At maximum load.

–

200

Output current

–

0.1

–

Quiescent current

No load.

–

µA

Maximum load at 70 mA.

–

660

700

µA

Leakage current

Power-down mode.

–

1.5

µA

Line regulation

Vin from (Vo + 0.2V) to 4.8V,

maximum load.

––3.5

mV/V

Load regulation

Load from 1 mA to 70 mA,

Vin = 3.6V.

––0.3

mV/mA

PSRR

Vin ≥ Vo + 0.2V, Vo = 2.5V, Co = 2.2 µF,

maximum load, 100 Hz to 100 kHz.

––dB

LDO turn-on time

Chip already powered up.

–

150

µs

In-rush current

Vin = Vo + 0.15V to 4.8V, Co = 2.2 µF,

No load.

–

250

External output capacitor, Co

Ceramic, X5R, 0402,

(ESR: 5–240 mΩ), ±10%, 10V

0.7b

b. The minimum value refers to the residual capacitor value after taking into account part–to–part tolerance, DC–

bias, temperature, and aging.

2.2

2.64

µF

External input capacitor

For SR_VDDBATA5V pin (shared with

Bandgap) ceramic, X5R, 0402,

(ESR: 30–200 mΩ), ±10%, 10V.

Not needed if sharing VBAT 4.7 µF

capacitor with SR_VDDBATP5V.

–4.7

–

µF

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