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RT9458WSC Datasheet(PDF) 7 Page - Richtek Technology Corporation

Part # RT9458WSC
Description  Switch-Mode Single Cell Li-Ion Battery Charger
PDF  27 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9458WSC Datasheet(HTML) 7 Page - Richtek Technology Corporation

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7
DS9458-02
February 2017
www.richtek.com
RT9458
©
Copyright
2017 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Electrical Characteristics
Absolute Maximum Ratings
(Note 1)
Supply Input Voltage, VIN -----------------------------------------------------------------------------------------------
−0.3V to 20V
VMID, BOOT ---------------------------------------------------------------------------------------------------------------
−0.3V to 20V
LX -----------------------------------------------------------------------------------------------------------------------------
−0.3V to 10V
MID
− VIN, BOOT − LX -------------------------------------------------------------------------------------------------- −0.3V to 6V
Other Pins ------------------------------------------------------------------------------------------------------------------
−0.3V to 6V
Power Dissipation, PD @ TA = 25
°C
WL-CSP-20B 2.1x1.87 (BSC) ----------------------------------------------------------------------------------------- 2.45W
Package Thermal Resistance (Note 2)
WL-CSP-20B 2.1x1.87 (BSC),
θJA ------------------------------------------------------------------------------------ 40.8°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)
Supply Input Voltage, VIN ----------------------------------------------------------------------------------------------- 4.3V to 6V
Junction Temperature Range -------------------------------------------------------------------------------------------
−40°C to 125°C
Ambient Temperature Range -------------------------------------------------------------------------------------------
−40°C to 85°C
(VIN = 5V, VBAT = 4.2V, L = 1
μH, CIN = 0.47μF, CBATS = 10μF, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Protection
VIN OVP Threshold Voltage
VINOVP
VIN rising
6.4
6.7
7
V
VIN OVP Hysteresis
VINOVP_Hys
--
150
--
mV
Battery OVP
VBATOVP
(Battery OVP
 VOREG) / VOREG
110
117
124
%
Battery OVP Hysteresis
VBATOVP_Hys
--
10
--
%
Over-Temperature Protection OTP
--
165
--
°C
OTP Hysteresis
TOTP_Hys
--
10
--
°C
Thermal Regulation Threshold
Charge current begins to reduce
--
120
--
°C
Sleep Mode Comparator
Sleep-Mode Entry Threshold
VIN  VBATS
VSLP
2.5V < VBATS < VOREG, VIN falling
0
0.04
0.1
V
Sleep-Mode Exit Hysteresis
VIN  VBATS
VSLPEXIT
2.5V < VBATS < VOREG, VIN rising
40
100
200
mV
Sleep-Mode Deglitch Time
tSLP
VIN rising above VSLP + VSLPEXIT
--
128
--
ms
Under-Voltage Lockout Threshold
IC Active Threshold Voltage
VUVLO
VIN rising
3.05
3.3
3.55
V
IC Active Hysteresis
VUVLO
VIN falling from UVLO
--
150
--
mV



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