RT4805BWSC datasheet(7/23 Pages) RICHTEK

7 / 23 page

RT4805B

is a registered trademark of Richtek Technology Corporation.

DS4805B-01

April

2017

www.richtek.com

Absolute Maximum Ratings

(Note 1)



VIN, VOUT to AGND ----------------------------------------------------------------------------------------

0.2V to 6V



EN, VSEL, PGOOD, nBYP to AGND ------------------------------------------------------------------

0.2V to 6V



LX ----------------------------------------------------------------------------------------------------------------

(PGND  0.2V) to 6V



Power Dissipation, PD @ TA = 25C

WL-CSP-16B 1.67x1.67 (BSC) ---------------------------------------------------------------------------

2.09W



Package Thermal Resistance

(Note 2)

WL-CSP-16B 1.67x1.67 (BSC),

JA --------------------------------------------------------------------- 47.7C/W



Lead Temperature (Soldering, 10 sec.)-----------------------------------------------------------------

260C



Junction Temperature ---------------------------------------------------------------------------------------

150C



Storage Temperature Range ------------------------------------------------------------------------------

65C to 150C



ESD Susceptibility

(Note 3)

HBM (Human Body Model) --------------------------------------------------------------------------------

2kV

CDM (Charge Device Model)------------------------------------------------------------------------------

1kV

Recommended Operating Conditions

(Note 4)



Input Voltage Range ---------------------------------------------------------------------------------------

1.8V to 5V



Output Voltage Range -------------------------------------------------------------------------------------

2.85V to 4.4V



Ambient Temperature Range------------------------------------------------------------------------------

40C to 85C



Junction Temperature Range -----------------------------------------------------------------------------

40C to 125C

Electrical Characteristics

(VIN = 3V, VOUT = 3.4V, TA = 25C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

VIN Operation Range

VIN

1.8

VIN Quiescent Current

Auto bypass mode, VIN = 3.8V

A

VIN Quiescent Current

Boost mode, ILOAD = 0mA, switching,

VIN = 3V

100

A

VIN Quiescent Current

Force bypass without LIQ, VIN = 3.6V

A

VIN Shutdown Current

ISHDN

EN = 0V, VIN = 3.6V

A

VOUT to VIN Reverse Leakage ILK

VOUT = 5V, EN = nBYP = H,

VIN < VOUT

0.2

A

VOUT Leakage Current

ILK_OUT

VOUT = 0V, EN = 0V, VIN = 4.2V

0.1

A

Under-Voltage Lock Out

VUVLO

VIN rising

1.6

1.8

Under-Voltage Lock Out

Hysteresis

VUVLO_HYS

200

PGOOD Low

VPGOOD

IPGOOD = 5mA

0.4

PGOOD Leakage Current

IPGOOD_LK

VPGOOD = 5V

A

Logic Level High EN, VSEL,

nBYP, SCL, SDA

VIH

1.2

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