RT4805
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 = 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
MM (Machine Model)---------------------------------------------------------------------------------------- 200V
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
(VIN = 3V, VOUT = 3.4V, TA = 25C, unless otherwise specified)
Parameter
VIN Operation Range
VIN Quiescent Current
Symbol
VIN
Test Conditions
Min
1.8
--
Typ Max Unit
--
5
V
IQ
IQ
Auto Bypass Mode, VIN = 3.8V
35
70
A
Boost mode, ILOAD = 0mA, Switching,
VIN = 3V
VIN Quiescent Current
--
55
100
A
VIN Quiescent Current
VIN Shutdown Current
IQ
Force Bypass without LIQ, VIN = 3.6V
EN = 0V, VIN = 3.6V
--
--
15
--
25
1
A
A
ISHDN
VOUT = 5V, EN = nBYP = H,
VIN < VOUT
VOUT to VIN Reverse Leakage ILK
--
0.2
1
A
VOUT Leakage Current
Under Voltage Lock Out
ILK_OUT
VOUT = 0V, EN = 0V, VIN = 4.2V
VIN Rising
--
--
0.1
1.6
1
A
VUVLO
1.8
V
Under Voltage Lock Out
Hysteresis
VUVLO_HYS
VPGOOD
--
200
--
mV
PGOOD Low
IPGOOD = 5mA
--
--
--
--
0.4
1
V
PGOOD Leakage Current
Logic Level High EN, VSEL,
nBYP, SCL, SDA
IPGOOD_LK VPGOOD = 5V
VIH
A
1.2
--
--
V
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is a registered trademark of Richtek Technology Corporation.
DS4805-03 April 2017
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