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RT9502 Datasheet(PDF) 6 Page - Richtek Technology Corporation

Part # RT9502
Description  Linear Single Cell Li-Ion Battery Charger IC with Dual Input Supply
PDF  13 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9502 Datasheet(HTML) 6 Page - Richtek Technology Corporation

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RT9502
6
DS9502-02 April 2011
www.richtek.com
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
ACIN Charge Current accuracy
ICHG_ACIN
VBATT = 3.8V; RISET = 1.5kΩ
--
500
--
mA
Precharge
BATT Pre-charge Rising Threshold
VPRECH
2.6
2.8
3
V
BATT Pre-charge Threshold
Hysteresis
ΔVPRECH
50
100
200
mV
Pre-Charge Current
IPCHG
VBATT = 2V
8
10
12
%
Recharge Threshold
BATT Re-charge Falling Threshold
Hysteresis
ΔVRECH_L
VREG − VBATT
60
100
150
mV
Charge Termination Detection
ISETA Charge Termination Set
Voltage
VTERM
VBATT = 4.2V
200
250
275
mV
Term ination Current Ratio (default)
ITERM
VBATT = 4.2V
--
10
--
%
Logic Input/Output
CHG_S Pull Down Voltage
VCHG_S
TBD; ICHG_S = 5mA
--
65
--
mV
PGOOD Pull Down Voltage
VPGOOD
TBD; IPGOOD = 5mA
--
220
--
mV
Logic-High Voltage VIH
1.5
--
--
V
EN Threshold
Logic-Low Voltage
VIL
--
--
0.4
V
EN Pin Input Current
IEN
VEN = 2V
--
--
2
uA
High Voltage
VISETU_HIGH
1.5
--
V
ISETU
Threshold
Low Voltage
VISETU_LOW
--
--
0.4
V
ISETU Pin Input Current
IISETU
VISETU =2V
--
--
2
uA
USB Charge Current & Timing
ICHG(USB100)
VUSB = 5V; VBATT = 3.5V,
ISETU = 0V
--
--
100
USB Charge Current
ICHG(USB500)
VUSB = 5V; VBATT = 3.5V,
ISETU = 5V
400
450
500
mA
Battery Temperature Sense
TS Pin Source Current
ITS
VTS = 1.5V
96
102
108
uA
Low Voltage
VTS_LOW
Falling
0.485
0.5
0.515
V
TS Pin
Threshold
High Voltage
VTS_HIGH
Rising
2.45
2.5
2.55
V
Protection
Thermal Regulation
--
125
--
°C
OVP SET
Internal Default
--
6.5
--
V



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