RT9986 RICHTEK [Richtek Technology Corporation], RT9986 Datasheet - Page 6

• Manufacturer Part Number: RT9986
• Description: 7-CH DC/DC Converter for DSC
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT9986
Functional Pin Description
www.richtek.com
6
33 (Exposed pad) GND
Pin No.
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
11
1
2
3
4
5
6
7
8
9
FB1
VREF
FB6
VOUT6
FB7
PVDD7
LX7
EN7
LX4
PVDD4
FB4
VCHK
VNEG
FB3
PVDD3
LX3
RST
FB5
PVDD5
LX5
VDDM
RTCPWR
SYSR
FB2
EN1234
LX2
PVDD2
LX6
BAT
PVDD1
LX1
EN56
Pin Name
Feedback Input Pin of CH1.
1.8V Reference Output Pin.
Feedback Input Pin of CH6.
Sense Input Pin of CH6 Inverting Output Node.
Feedback input pin of CH7 in step-up mode or current sink pin of CH7 in current
source mode.
Power Output Pin of CH7.
Switch Node of CH7 in Step-Up Mode. LX7 initial voltage determines CH7
operation mode.
Enable Pin of CH7 and PWM Dimming Signal Input Pin.
Switch Node of CH4.
Power Input Pin of CH4.
Feedback Input Pin of CH4.
Sense Pin of Voltage Detector.
Output Pin of Negative Regulator.
Feedback Input Pin of CH3.
Power Input Pin of CH3.
Switch Node of CH3.
Voltage Detector Open Drain Output Pin.
Feedback Input Pin of CH5.
Power Output Pin of CH5.
Switch Node of CH5.
IC Analog Power Pin.
Internal Control Circuit Power Pin. That must connect to a bypass capacitor for
better noise rejection.
System Reset Open-Drain Output Pin.
Feedback Input Pin of CH2.
Enable Pin of CH1, CH2, CH3, CH4.
Switch Node of CH2.
Power Input Pin for Step-Down of CH2.
Power Output Pin for Step-Up of CH2.
Switch Node of CH6.
Battery Power Pin.
Power Output Pin of CH1.
Switch Node of CH1.
Enable Pin of CH5, CH6.
Ground. The exposed pad must be soldered to a large PCB and connected to
GND for maximum thermal dissipation.
Pin Function
DS9986-00 May 2011