RT5002
Functional Pin Description
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Pin Name
INT
FB1
VDDM
FB7
PVD7
LX7
BATS
LX4
PVD4
FB4
ISETA
TS
VP
SDA
SCL
PVD6
LX6
VOUT6
FB6
VREF
FB3
PVD3
LX3
EN1234
FB5
PVD5
LX5
TSSEL
FB2
WAKE
LX2
PVD2
Pin Function
Interrupt Indicator Open Drain Output. If any toggle events of TS_FAULT, PGOOD,
EOC, or SAFE happen, the output INT goes low. After I C register bank address
0x2 is read or power on reset, INT goes high.
Feedback Input of CH1.
IC Analog Power Pin.
Feedback Input of CH7 in Step-Up Mode or Current Sink Pin of CH7 in Current
Source Mode.
Power Output of CH7
Switch Node of CH7 in Step-Up Mode.
Output pin of voltage divider for battery voltage level sensing enabled after CH2
soft-start end. BATS voltage is about 60% of BAT.
Switch Node of CH4.
Power Input of CH4.
Feedback Input of CH4.
Charge Current Set Input. Connect a resistor (R
ISETA
) between ISETA and GND.
Temperature Sense Input. The TS pin connects to a battery’s thermistor to
determine whether the battery is too hot or too cold to be charged. If the battery’s
temperature is out of range, charging is paused until it re-enters the valid range.
TS also detects whether the battery (with NTC) is present or not.
Power Output of 3.3V Buffer for Battery Temperature Sensing.
Data Signal Pin of I C Interface.
Clock Signal Pin of I C Interface.
Power Input of CH6.
Switch Node of CH6.
Sense Input of CH6 Inverting Output Node.
Feedback Input of CH6.
1.8V Reference Output.
Feedback Input of CH3.
Power Input of CH3.
Switch Node of CH3.
Enable Pin of CH1, CH2, CH3, and CH4.
Feedback Input of CH5.
Power Output of CH5.
Switch Node of CH5.
Input Pin to Select Temperature Sensing Thresholds. Thresholds of TSSEL = H are
60% and 38% of VP voltage. Thresholds of TSSEL = L are 74% and 28% of VP
voltage.
Feedback Input of CH2.
Wake-Up Impulse Push-Pull Output. If VIN or BAT plug in, WAKE pin generates
one 55ms width high pulse to notify micro processor.
Switch Node of CH2.
Power Input of CH2.
To be continued
DS5002-00
November 2011
www.richtek.com
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RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
