RT4805B
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, P
D
@ T
A
= 25C
WL-CSP-16B 1.67x1.67 (BSC) ---------------------------------------------------------------------------
2.09W
Package Thermal Resistance
(Note 2)
WL-CSP-16B 1.67x1.67 (BSC),
JA
---------------------------------------------------------------------
47.7C/W
Lead Temperature (Soldering, 10 sec.) -----------------------------------------------------------------
260C
Junction Temperature ---------------------------------------------------------------------------------------
150C
Storage Temperature Range ------------------------------------------------------------------------------
65C
to 150C
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------------------------------------------------------------------------------
40C
to 85C
Junction Temperature Range -----------------------------------------------------------------------------
40C
to 125C
Electrical Characteristics
(V
IN
= 3V, V
OUT
= 3.4V, T
A
= 25C, unless otherwise specified)
Parameter
VIN Operation Range
VIN Quiescent Current
VIN Quiescent Current
VIN Quiescent Current
VIN Shutdown Current
Symbol
V
IN
I
Q
I
Q
I
Q
I
SHDN
Test Conditions
Min
1.8
Typ
--
35
55
15
--
0.2
0.1
1.6
200
--
--
--
Max
5
70
100
25
1
1
1
1.8
--
0.4
1
--
Unit
V
A
A
A
A
A
A
V
mV
V
A
V
Auto bypass mode, V
IN
= 3.8V
Boost mode, I
LOAD
= 0mA, switching,
V
IN
= 3V
Force bypass without LIQ, V
IN
= 3.6V
EN = 0V, V
IN
= 3.6V
V
OUT
= 5V, EN = nBYP = H,
V
IN
< V
OUT
V
OUT
= 0V, EN = 0V, V
IN
= 4.2V
V
IN
rising
--
--
--
--
--
--
--
--
VOUT to VIN Reverse Leakage I
LK
VOUT Leakage Current
Under-Voltage Lock Out
Under-Voltage Lock Out
Hysteresis
I
LK_OUT
V
UVLO
V
UVLO_HYS
V
PGOOD
I
PGOOD_LK
V
IH
PGOOD
Low
PGOOD
Leakage Current
Logic Level High EN, VSEL,
nBYP, SCL, SDA
I
PGOOD
= 5mA
V
PGOOD
= 5V
--
--
1.2
Copyright © 2017 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS4805B-01
April 2017
www.richtek.com
7
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
