RT5035A/B
Pin No.
Pin Name
Pin Function
Regulated output node of CH8 generic LDO. When turning off, RT5035A/B would
discharge CH8 output capacitors internally till VOUT8 < 0.1V. This pin is in high
impedance during shutdown.
28
VOUT8
Power input node of CH8 generic LDO. This pin is in high impedance during
shutdown.
29
30
31
PVDD8
LX3
Switch node of CH3. This pin is in high impedance during shutdown.
RTC 32768Hz clock output pin. Its rails are VDDM and GND. When
goes low, C32K outputs low.
RESET
C32K
Power input pin of CH3 and it must connect to the same node as BAT. This pin is
in high impedance during shutdown.
32
PVDD3
Sense pin of CH3 output voltage. This pin is also the feedback pin for VOUT3 if
I2C is set to use the external resistor. When turning off, the IC discharges CH3
output capacitors internally until VOUT3 < 0.1V. Recommend that output
capacitors are as close as possible to the IC. This pin is in high impedance
during shutdown.
33
VOUT3/FB3
34
35
RTCGND
XOUT
Ground pin for RTC timer counter and oscillator.
Crystal output. This pin’s parasitic capacitance should be kept as low as
possible. Noise interference should also be avoided.
Crystal input. This pin’s parasitic capacitance should be kept as low as possible.
Noise interference should also be avoided.
36
37
38
39
XIN
RTCPWR
VDDM
SYNC
RTCLDO power pin. Connect this pin to a backup battery
Regulation voltage output of CH9 keep-alive LDO. It also provides power for all
IC control circuit.
PLL synchronous input pin.
Power output and sense pin for CH1 output voltage. Recommend that output
capacitors are as close to RT5035A/B as possible. This pin is in high impedance
during shutdown.
40
VOUT1
GND
41
RT5035A/B power ground and control circuit ground. Exposed PAD should be
soldered to PCB and connected to GND.
(Exposed Pad)
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is a registered trademark of Richtek Technology Corporation.
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4
DS5035A/B-02 February 2017
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
