WM8352 datasheet(19/336 Pages) WOLFSON

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Production Data

WM8352

PD, February 2011, Rev 4.4

7.3

DC-DC STEP DOWN CONVERTER ELECTRICAL CHARACTERISTICS

Test Conditions

VIN = 3.7, VOUT = 1.8V, TA = +25ºC unless otherwise noted.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DC-DC1 and DC-DC6

Input Voltage

VIN

2.7

3.7

5.5

Output Voltage

VOUT

0.85

3.4

VOUT Accuracy

VOUT

VIN = 3.7V

VOUT = 0.85V / 1.8V

/ 3.4V

IOUT =

0.5A

Active

+/- 3.0

IOUT =

0.005A

Sleep

-1.5

+4.5

Line Regulation

VOUT LINE

VIN = 2.7V to

5.5V

VOUT = 1.8V

IOUT = 0.5A

Active

+/- 0.5

IOUT = 0.1A

Standby

+/-

0.25

IOUT = 0.005A

Sleep

+/- 0.4

+/- 0.5

Load Regulation

VOUT LOAD

IOUT = 0.001A to 1A

Active

+/- 0.2

IOUT = 0A to 0.1A

Standby

+/- 0.2

IOUT = 0A to 0.01A

Sleep

+/- 0.3

+/- 0.5

Quiescent Current

IQ ACTIVE

Active (excluding switching losses)

265

μA

IQ STANDBY

Standby (excluding switching losses)

115

IQSLEEP

Sleep

Shutdown current

ISD

0.01

μA

P-channel On

Resistance

RDSP

VIN = 3.7V, IL(n) = 100mA

0.09

Ω

N-channel On

Resistance

RDSN

VIN = 3.7V, IL(n) = 100mA

0.167

Ω

P-channel

leakage current

ILXP

VIN = 3.7V, L(n) = GND

0.01

μA

N-channel

leakage current

ILXN

VIN = 3.7V, L(n) = 3.7V

2.8

μA

Switching

Frequency

fSW

2.0

MHz

WM8352 Datasheet(PDF) 19 Page - Wolfson Microelectronics plc

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