LP5523 datasheet(5/61 Pages) TI2

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LP5523

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SNVS550E – SEPTEMBER 2009 – REVISED JANUARY 2017

Product Folder Links: LP5523

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(1)

For more information about traditional and new thermal metrics, see Semiconductor and IC Package Thermal Metrics.

(2)

Junction-to-ambient thermal resistance is highly application and board-layout dependent. In applications where high maximum power

dissipation exists, special care must be paid to thermal dissipation issues in board design.

6.4 Thermal Information

THERMAL METRIC(1)

LP5523

UNIT

YFQ (DSBGA)

25 PINS

RθJA

(2)

Junction-to-ambient thermal resistance

60.9

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

0.4

°C/W

RθJB

Junction-to-board thermal resistance

9.9

°C/W

ψJT

Junction-to-top characterization parameter

0.2

°C/W

ψJB

Junction-to-board characterization parameter

10.0

°C/W

(1)

The Electrical Characteristics tables list ensured specifications under Recommended Operating Conditions except as otherwise modified

or specified by the Electrical Characteristics conditions and/or notes. Typical specifications are estimations only and are not ensured.

(2)

All voltages are with respect to the potential at the GND pin.

(3)

Minimum and maximum limits are ensured by design, test, or statistical analysis.

(4)

Low-ESR surface-mount ceramic capacitors (MLCCs) used in setting electrical characteristics.

6.5 Electrical Characteristics

Unless otherwise noted: typical limits are for TA = 25°C; minimum and maximum limits apply over the operating ambient

temperature range (

−30°C < TA < +85°C), specifications apply to the Functional Block Diagram with: VDD = 3.6 V, VEN = 1.65

V, COUT = 1 µF, CIN = 1 µF, C1–2 = 0.47 µF.

(1) (2) (3) (4)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IVDD

Standby supply current

VEN = 0V, CHIP_EN=0 (bit),

external 32-kHz clock running or not

running

0.2

µA

CHIP_EN=0 (bit), external 32 kHz

clock not running

µA

CHIP_EN=0 (bit), external 32 kHz

clock running

1.4

µA

Normal mode supply current

External 32-kHz clock running,

charge pump and current source

outputs disabled

0.6

Charge pump in 1× mode, no load,

current source outputs disabled

0.8

Charge pump in 1.5× mode, no

load, current source outputs

disabled

1.8

Power-save mode supply current

External 32-kHz clock running

µA

Internal oscillator running

0.6

ƒOSC

Internal oscillator frequency accuracy

–4%

–7%

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