WM8352 datasheet(20/336 Pages) WOLFSON

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WM8352

Production Data

PD, February 2011, Rev 4.4

Test Conditions

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DC-DC3 and DC-DC4

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 =

0.005

Sleep

-1.5

+4.5

Line Regulation

VOUT LINE

VIN = 2.7V to

5.5V

VOUT = 1.8V

IOUT = 0.25A

Active

+/- 0.4

IOUT =

0.025A

(100mA lim)

Standby

+/-

0.18

IOUT =

0.005A

Sleep

+/- 0.4

+/- 0.5

Load Regulation

VOUT LOAD

IOUT = 1mA to 500mA

Active

+/- 0.5

IOUT = 0A to 0.05A

Standby

+/- 0.2

IOUT = 0A to 0.010A

Sleep

+/- 0.3

+/- 0.5

Quiescent Current

IQ ACTIVE

Active ( excluding switching losses)

318

μA

IQ STANDBY

Standby (excluding switching losses)

120

IQ SLEEP

Sleep

Shutdown current

ISD

0.01

μA

P-channel On

Resistance

RDSP

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

0.29

Ω

N-channel On

Resistance

RDSN

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

0.2

Ω

P-channel

leakage current

ILXP

VIN = 3.7V, L(n) = GND

0.02

μA

N-channel

leakage current

ILXN

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

1.4

μA

Switching

Frequency

fSW

2.0

MHz

WM8352 Datasheet(PDF) 20 Page - Wolfson Microelectronics plc

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