RT4823

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is a registered trademark of Richtek Technology Corporation.

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DS4823-01

September 2022

6

Absolute Maximum Ratings (Note 1)

⚫

VIN, VOUT, SW, EN, BP --------------------------------------------------------------------------------------------

–0.3V to 6.5V

⚫

Power Dissipation, PD @ TA = 25°C

⚫

WL-CSP-9B 1.3x1.2 (BSC) ----------------------------------------------------------------------------------------- 1.54W

⚫

Package Thermal Resistance

(Note 2)

⚫

WL-CSP-9B 1.3x1.2 (BSC) ----------------------------------------------------------------------------------------- 64.9

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

Recommended Operating Conditions (Note 4)

⚫

Input Voltage Range (Boost Mode) ------------------------------------------------------------------------------- 1.8V to 5.5V

⚫

Input Voltage Range (Bypass Mode) ----------------------------------------------------------------------------- 2.2V to 5.5V

⚫

Output Voltage Range ----------------------------------------------------------------------------------------------- 5V

⚫

Input Capacitor, CIN -------------------------------------------------------------------------------------------------- 4.7

F

⚫

Output Capacitor, COUT -------------------------------------------------------------------------------------------- 3.5

F to 50F

⚫

Inductance, L ----------------------------------------------------------------------------------------------------------- 0.7

H to 2.2H

⚫

Input Current (Average current into SW) ----------------------------------------------------------------------- 1.8A

⚫

Input Current (Peak current into SW)----------------------------------------------------------------------------- 4A

⚫

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

−40C to 85C

⚫

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

−40C to 125C

Electrical Characteristics

(VIN = 3.6V, CIN = 4.7F, COUT = 10F, L1 = 1H. All typical (TYP) limits apply for TA = 25C, unless otherwise specified. All

minimum (MIN) and maximum (MAX) apply over the full operating ambient temperature range (

−40C ≤ TA ≤ 85C).

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Input Supply

VIN Operation Range

VIN

1.8

--

5.5

V

Into VIN Operating Quiescent

Current

IQ(non-switching)

IOUT = 0mA, VIN = 3.6V,

EN = BP = GND

--

0.1

0.5

A

Into VOUT Standby Mode

Quiescent Current

IQ(non-switching)

VOUT = 5V

BP = GND, EN = 5V

--

4

6

A

VIN Quiescent Current

(Device Normal Switching)

IQ(switching)

VIN = 3.6V, VOUT = 5V,

BP = EN = GND

--

--

1

A

VIN = 3.6V, VOUT = 5V,

BP = GND, EN = VIN

--

6

--

VIN = 3.6V, VOUT = 5V,

BP = VIN, EN = GND

--

16

25

VIN = 3.6V, VOUT = 5V,

BP = EN = VIN

--

6

--